WO2011064719A1

WO2011064719A1 - A cosmetic treatment method

Info

Publication number: WO2011064719A1
Application number: PCT/IB2010/055369
Authority: WO
Inventors: Henri Samain; Christophe Dumousseaux
Original assignee: L'oreal
Priority date: 2009-11-24
Filing date: 2010-11-23
Publication date: 2011-06-03
Also published as: FR2952820A1; FR2952820B1

Abstract

The present invention provides a method of cosmetic treatment of a surface (S) of human macroscopic keratinous materials other than keratinous fibers, especially a surface of the skin or the lips, comprising at least the steps consisting of: - creating a discontinuous adhesive surface on the surface (S); and - applying a particulate composition to said discontinuous adhesive surface.

Description

A COSMETIC TREATMENT METHOD

The present invention relates to cosmetic

treatments, in particular makeup for the skin or the lips. It also encompasses the treatment of the nails and the scalp.

The majority of methods for cosmetically treating the skin or the lips comprise a step of applying

particles to their surface. This is particularly true of the majority of makeup treatments for providing color or for concealing blemishes.

The use of a bi-component makeup system has been suggested in order to improve the hold or the optical effects of cosmetic compositions.

Patent US 6 367 484 describes the use of a first composition containing a film-forming polymer and

depositing solid particles belonging to a second

composition before the first composition is completely dry. Those solid particles are preferably spheres and the desired effect is preferably a relief effect.

Examples of nail polish are described. The effect obtained is difficult to remove and very sensitive to drying time.

Application WO 02/05762 describes the use of a first composition containing an adhesive material and a second cosmetic composition being applied thereafter. The first composition results in improved hold. The examples mention the use of polyisobutylenes in the first

composition and the second composition is in powder form.

Examples of compositions comprising adhesive

particles are described in US 2006/0024255,

US 2002/0041858, and US 2007/0224140.

The solutions of the prior art may result in the skin being covered too much, causing its natural

appearance to be lost. Furthermore, it may be difficult for the user to achieve the desired result without overdoing it. Finally, the particles may become detached from the skin relatively quickly, resulting in a loss of the desired effect, a change in the result over time, and also difficulties linked to loss or transfer of

particles .

In order to overcome such problems, tests have been carried out in-house in which the quantity of adhesive used was varied. It was observed that the only effect it had was limiting the hold of the particles. Thus, after application, the treated surface lost its natural

appearance and the result was still unsatisfactory.

Other tests were carried out, varying the quantity of particles used. However, when the quantity of

particles was limited, the result was a less natural appearance and the treated surface was tacky to the touch.

In addition, even now it is difficult to adhere fibers to a surface such as the skin or the lips without them being bonded in a flat position. It is difficult to obtain erect fibers .

It is known to bond small fibers to alopecic parts.

The adhesive employed holds the fibers, but the result is not esthetically pleasing. The majority of fibers are in fact bonded in a flat position and the few fibers that do not extend parallel to the skin form a small angle with the surface thereof; the overall effect is untidy. If the result is viewed close up, it is judged to be

unnatural and unattractive.

It is important to be able to bond fibers to a surface such as the skin, for example in order:

- to create or recreate pilosity for esthetic purposes, in particular to regain symmetry, to fill in a zone with no pilosity, to bond hairs amongst the hairs of the head, or to recreate or complement the eyelashes or eyebrows ;

- to create pilosity in order to retain heat or to accelerate heat exchange; - to create pilosity in order to provide the treated surface with softness, especially for rough skin; and

- to obtain erect fibers with a non-natural

appearance, for example to obtain sparkle, gloss, or deep black effects.

Furthermore, fastening fibers in a suitable manner becomes more difficult as their flexibility increases. However, it may be desirable to fasten flexible fibers to the skin, for example.

The problem is also more difficult to overcome when the fibers are long.

There is thus a need to create an easy way of producing cosmetic treatment effects, especially on the skin or the lips, that is free of some or all of the above-mentioned disadvantages.

The invention aims to satisfy this need, and in first exemplary embodiments it provides a method of cosmetically treating a surface of human macroscopic keratinous material other than keratinous fibers, said surface being, for example, a surface of the skin or the lips, the method comprising the steps consisting of:

- creating a discontinuous adhesive surface on the surface; and

- applying a particulate composition to said

discontinuous adhesive surface.

The keratinous materials concerned in the method of the invention are, for example, the skin of the brow ridge, the eyelids, the skin of the armpits, the lips, and the scalp.

The discontinuous adhesive surface may be formed by applying an adhesive composition forming a discontinuous deposit to the surface.

In a variation, the discontinuous adhesive surface may be formed by applying an adhesive composition forming a continuous deposit to the surface, then by applying a discontinuous deposit of a non-stick composition to the continuous deposit. In a variation, the discontinuous adhesive surface may be formed by applying a non-stick composition forming a discontinuous deposit to the surface then by applying a continuous deposit of an adhesive composition to the discontinuous deposit.

In another variation, the discontinuous adhesive surface may be formed by applying activatable adhesive particles to the surface followed by activation of said particles by a stimulus, for example mechanical,

luminous, or thermal.

In the first variation, the adhesive composition may be applied in order to form a discontinuous deposit on the surface to be treated, the discontinuous deposit resulting from the mode of application and/or the nature of the adhesive employed. In the second variation, the non-stick composition may be applied in a discontinuous manner over at least a portion of the adhesive

composition, which in turn may be applied in a continuous manner. In the third variation, the adhesive composition may be applied in a continuous manner to at least a portion of the non-stick composition that in turn may be applied in a discontinuous manner. Discontinuous

application of the non-stick composition may result from the mode of application and/or the nature of the

composition employed. In the fourth variation, the adhesive composition may be encapsulated in non-adhesive particles, termed activatable adhesive particles, applied in the first instance to the keratinous materials. These particles may then, for example under the effect of a mechanical action, release the adhesive composition in order to form a discontinuous adhesive surface.

It is possible to obtain a discontinuous adhesive surface by applying an adhesive composition in the form of a series of continuous, disjointed mutually parallel bands. A non-stick composition may be applied in the form of a series of disjoint bands that are inclined to or perpendicular to the bands of adhesive composition. In the third variation, the zones of non-stick composition covered with adhesive composition may be eliminated, either before application of the particulate composition, or after application thereof, the

elimination being carried out, for example, by a

mechanical action such as friction, blowing, or

aspiration, or by bringing in a support to which the adhesive composition covering the non-stick composition adheres, and is then torn off with the support when it is removed, while the adhesive composition in contact with the surface to be treated remains bonded thereto.

In the fourth variation, the adhesive composition may be liberated by a mechanical action such as pressure, for example with the finger, friction, or applying another composition, for example a particulate

composition of the invention.

In one embodiment, the proportion of the treated surface covered by adhesive islets that are not connected together may be 75% or less, preferably less than 50%. In other words, the coverage factor F_coverage = (total surface of adhesive islets that are not connected

together) / (total extent of the treated surface) may be 0.75 or less. It may be that 0.05 ≤ F_coverage - 0.75;

preferably, 0.1 < F_covera_ge ≤ 0.5.

The adhesive islets may have any shape, for example circular, oval, or polygonal. The islets may be bands or dots. The form factor for the islets may be 2 or less.

The term "discontinuous deposit" means a deposit that is not in one piece, and the term "continuous deposit" means a deposit in which all sub-portions are connected together in the two dimensions of the

application surface.

Below, the term "discontinuous adhesive surface" is synonymous with the term "discontinuous deposit of adhesive islets".

The term "particulate composition" means a

composition that contains micro-objects that may have a wide variety of shapes, for example the shape of a fiber, microbead, or plate. Thus, in the context of the present invention, the term "particle" may denote a fiber, even a long fiber.

They may be coloring agents or other micro-objects, for example acting as a support for a biocidal active ingredient, a fragrance, or an antiperspirant active ingredient .

The micro-objects may be present in the particulate composition in a quantity of more than 30% by weight.

The particulate composition may be in powder form. Further, the method of the invention may comprise a step of additional fastening of the particles of the particulate composition. Said fastening may be carried out by means of a second adhesive composition, applied after depositing the particulate composition, and/or by means of an adhesive compound activated while present in the adhesive composition and/or the particles. The additional fastening step may be carried out after the step of applying the particulate composition. Activation may occur under the effect of a stimulus, for example mechanical, luminous, especially UV, thermal, or by reaction with the adhesive composition.

In general, the cosmetic treatment method of the invention may, for example, be a makeup method or a pilosity creation method.

The invention means that a deposit of particles of the particulate composition, for example on the skin or the lips, can readily be obtained without problems relating to overloading or too much coverage.

Furthermore, the deposit of particles may have good hold and it is easy for the user to achieve precisely the desired result.

In particular, the method of the invention means that erect fibers that are well organized can be

produced. Depending on the size, the substance and the quantity of the fibers, it is possible to obtain the above-mentioned esthetic advantages, softness advantages, and heat regulation advantages.

In first exemplary embodiments, the method of the invention may be used for the skin or the scalp in order to re-establish pilosity altered by hair loss, skin disorders, or accidents, to thickin thinning pilosity or to obtain a coloring and/or softening effect.

In second exemplary embodiments, the method of the invention may be a method of making up the skin,

especially the contour of the eyes, the cheeks, the forehead, blackheads, scars, or the lips.

In third exemplary embodiments, the method of the invention may be used to make up zones that are in relief, projecting or are recessed, such as pimples, scars, or wrinkles. It is possible, for example, to hide scars by creating or thickening pilosity.

Furthermore, the method of the invention may include a step consisting in selecting the particulate

composition adapted to the color and/or spectral

reflectance of the keratinous material to be treated.

The method of the invention may be used to recreate a hairy portion and/or to obtain a color effect.

The invention may be used to obtain color effects, but it is not limited thereto. It is possible to create rejuvenating effects by implanting dark hairs into a zone of naturally white hairs, or novel esthetic effects by implanting fibers with a different color in a hairy zone. It is also possible, by means of the method of the invention, to protect the skin against the effects of heat, cold, or sun. In particular, the skin may be treated with sunscreens, for example anti-UV particles.

Furthermore, by using water-insensitive fibers, protection against rain may be provided.

The method of the invention may also be used for skin or lip care. The particles may contain or deliver active ingredients for treatment of the skin or the lips. The particles may also play a role in masking, capturing, or releasing odors and may, for example, limit perspiration or accelerate the evaporation of sweat.

The method of the invention may also be useful in limiting sweating.

Adhesive composition

The adhesive composition may comprise an adhesive adapted to maintaining and/or organizing the particles of the particulate composition on the coated surface of said adhesive composition.

The adhesive composition may have adhesive

properties at the moment of its application to the keratinous materials.

In a variation, the adhesive composition may be activatable, i.e. it has adhesive properties after the action of a stimulus, for example mechanical, luminous, or thermal. In this variation, the adhesive composition may be encapsulated in non-adhesive particles, termed activatable adhesive particles, and be released to form an adhesive surface after the action of a stimulus, for example a mechanical stimulus.

The activatable adhesive particles may be minerals and comprise calcium chloride, for example.

In accordance with the invention, the adhesive composition may be selected such that it creates a discontinuous deposit 10 of adhesive islets 1 at the surface to be treated S, as illustrated in a diagrammatic manner in Figure 1. Hence, the adhesive composition may be free of adhesive forming a continuous deposit on the surface to be treated.

The mean size of the adhesive islets, in particular when the particles to then be deposited are fibers, may be in the range 1 micrometer (ym) to 2 millimeters (mm) , preferably in the range 5 ym to 1 mm, more preferably in the range 10 ym to 250 ym. When the adhesive composition comprises adhesive particles, the mean size of the adhesive islets may be in the range 1 ym to 2 mm, preferably in the range 5 ym to 1 mm, more preferably in the range 10 ym to 250 ym.

When the adhesive composition comprises a solution of adhesive and is applied with the aid of an applicator that is arranged to form islets, the mean size of the adhesive islets may be greater and be, for example, in the range 1 ym to 2 mm, for example in the range 50 ym to 1 mm .

With the aid of an applicator forming the islets, it is also possible to apply a composition comprising adhesive particles that are themselves capable of forming the islets independently of the applicator. Thus, it is possible simultaneously to form adhesive islets by application using the applicator and adhesive islets because of the particulate nature of the adhesive.

Once the adhesive composition has been deposited, the mean distance between two adhesive islets may be in the range 1 ym to 2 mm, preferably in the range 10 ym to 500 ym.

By way of example, the density of adhesive islets on a support is determined by analysis of an image obtained with the aid of a scanning electron microscope, for example that referenced S-4 500 from the supplier

HITACHI. Image analysis software may be used to

facilitate said measurement, for example Winroof^® software sold by the supplier Mitani Corporation. When measured as the number of islets per square centimeter (cm²) , it corresponds to the number of islets at least partially included in a square zone with sides of 1 centimeter (cm) .

Similarly, the mean distance between adhesive islets and the mean size of the adhesive islets is also

determined by image analysis, for example obtained with the aid of said scanning electron microscope. The Applicant has observed that the presence of a discontinuous adhesive surface improves the natural appearance and the hold of the cosmetic treatment, facilitates making up and makeup removal, and may provide better esthetic results than when using an adhesive composition that forms a continuous deposit on the surface to be treated.

When the particles to be deposited are fibers, it has been observed that the presence of a discontinuous adhesive surface improves the organization of the fibers and facilitates obtaining erect fibers.

The adhesive composition may comprise adhesive particles that can be used to obtain a deposit that retains some residual tackiness after drying and that does not form a continuous deposit. Said adhesive particles may have a variety of shapes and may have a largest dimension in the range 1 ym to 100 ym, or even more. They behave differently from polyisobutylene (PIB) or latex type adhesive polymers, which form liquid or dry films on drying. Despite their tacky nature, the

adhesive particles do not coalesce. Mutual bonding of the particles may be observed, but each particle retains some or all of its individuality. The adhesive

composition may include adhesive particles that have an average size lying in the range 1 ym to 250 ym,

preferably 10 ym to 250 ym.

The expression "average size" must be understood as the granulometric statistic size at the half of the population (i.e. D(0.5)).

The obtaining of an adhesive discontinuous surface may be the consequence of the size of the adhesive particles used. Adhesive particles of too small size may coalesce and form a continous film when deposited on the surface. As such, it may be advantageous to use adhesive particles of average size greater than 1 ym, for example lying in the range 1 ym to 250 ym. The adhesive composition may comprise non-fluid adhesive particles. The expression "non-fluid adhesive particles" means that the adhesive particles have a viscosity such that they do not flow at room temperature (20°) under the only effect of gravity when deposited on the keratin material.

The adhesive composition may also be applied by spraying or printing, for example using a spray gun or a piezoelectric printing head.

In an adhesive composition according to the

invention, the adhesive particles may be present in a concentration by weight before drying in the range 0.1% to 70%, preferably in the range 0.2% to 60%, preferably in the range 0.3% to 50%, preferably in the range 0.4% to 25%, preferably in the range 0.5% to 10%, more preferably in the range 1% to 5%.

The adhesive composition may be in the form of a gel or emulsion, preferably relatively fluid, with a volatile phase allowing drying.

The solvent weight content may be 50% or more, and is preferably greater than 70%.

The solvent may, for example, contain water and/or an alcohol, for example ethanol.

The weight content of water in the adhesive

composition may be greater than 50%, for example greater than 70%.

The weight content of alcohol, in particular

ethanol, in the adhesive composition may be greater than 50%, for example greater than 70%.

The adhesive particles may be mixed with other components such as gelling agents, surfactants, or pigments .

The adhesive particles may be produced with a single substance or with two or more substances. In particular, the adhesive particles may have a core formed from a non- adhesive substance, for example mineral or organic, and a shell formed from an adhesive coating. The adhesive substance or substances of the adhesive composition, in particular the above-mentioned adhesive particles, are advantageously selected from pressure- sensitive adhesives, which still have adhesive power after drying.

The adhesive composition may in particular comprise pressure-sensitive adhesives selected, for example, from acrylic polymers, in particular acrylate and methacrylate copolymers, rubber-based or styrene copolymer-based pressure-sensitive adhesives such as styrene-isoprene- styrene (SIS) , or styrene-butadiene-styrene (SBS)

copolymers .

They may also be polymers of urethane,

polyurethanes , cross-linked silicones, ethylene-vinyl acetate polymers, block copolymers based on styrene or natural gums, chloroprene, butadiene, isoprene, neoprene polymers or the like, and mixtures thereof.

Non-limiting examples of pressure-sensitive

adhesives based on rubber polymers that may in particular be mentioned are natural rubber (poly (cis-1 , 4-isoprene) ) , methyl-methacrylate-isoprene graft copolymers, styrene butadiene copolymers, butyl rubber, acrylonitrile- butadiene rubber, styrene-isoprene block copolymers, polybutadiene, ethylene-butylene block copolymers, polychloroprene, and mixtures thereof.

Examples of pressure-sensitive adhesives comprising polar acrylic polymers that may be mentioned are block or statistical copolymers based on acrylic acid, alkyl acrylates and alkyl methacrylates , as well as copolymers of said acrylics with ethylene, vinyl acetate, and mixtures thereof.

The pressure-sensitive adhesive may also be selected from mixtures of the adhesives described above.

A particularly suitable example of a pressure- sensitive adhesive, alone or mixed with other pressure- sensitive adhesives, for use in the invention is poly (2- ethylhexylacrylate) , for example that commercially available under the trade name GEL-TAC 100G (Advanced Polymer International) , in a 40% solid matter aqueous dispersion of 15 micrometer adhesive acrylic

microspheres .

Suitable pressure-sensitive adhesives that may be mentioned are butyl acrylate, butyl methacrylate, and acrylic acid copolymers.

The adhesive composition may comprise an activatable adhesive composition that can in particular be used to carry out a step of additional fastening of the particles to the surface to be treated. Activation of this

compound may be subsequent to depositing the particles of the particulate composition.

It is possible to use an applicator in order to deposit the adhesive composition in a discontinuous manner. As an example, it is possible to use small needles, a multi-outlet applicator, or a roller with thickened points, for example erect pins, which, as it passes, delivers dots of adhesive. In a variation, it is also possible to deposit the adhesive composition in a discontinuous manner with the finger.

It is possible to use an applicator to deposit the adhesive composition in a continuous manner. As an example, a flocked tip, a brush, or a roller may be used, or the adhesive composition may be applied by spraying or by transfer, for example using a sheet or a patch.

To apply the adhesive composition, it may be

possible to use a medium, for example in the form of a sheet or patch, on which the adhesive composition has already been deposited, for example in the form of adhesive islets that are not connected together, and to apply the composition by transfer.

With an activatable adhesive composition, the activatable adhesive particles may be applied using the hand or any suitable applicator.

It may be possible to use an application system with a homopolymeric adhesive composition or with an adhesive composition containing adhesive particles. The adhesive agent used may then be a compound such as a branched sulfonic polyester, for example AQ 1350 from the supplier Eastman Chemicals.

The quantity of adhesive composition deposited at the moment of application is, for example, in the range 0.1 milligrams per square centimeter (mg/cm²) to 10 mg/cm^' of treated surface.

The quantity of adhesive composition deposited is, for example, 0.2 mg/cm² to 5 mg/cm² of treated surface.

The viscosity of the adhesive composition may be sufficient for the dots formed not to flow and spread before they dry. Such a viscosity may be high for compositions containing a low concentration of adhesive.

Non-stick particles and non-stick composition

In exemplary embodiments, the adhesive composition may contain both adhesive particles and non-stick

particles. At the moment of application, the particles are dispersed on the surface to be treated, for example the skin, and form a deposit of adhesive islets that are not connected together, each adhesive islet possibly being surrounded by non-stick particles.

In other exemplary embodiments, a continuous deposit is formed with the adhesive composition, which is covered with the non-stick composition, which non-stick

composition forms a discontinuous deposit.

In other exemplary embodiments, the non-stick composition is applied to form a discontinuous deposit, followed by the adhesive composition. Where the adhesive composition covers the non-stick composition, the

adhesive composition does not stick to the keratinous materials and can readily be eliminated. After

elimination, a discontinuous adhesive surface is

obtained.

Examples of the non-stick compositions that may be used are compositions comprising a silicone-containing agent or a powder such as components with a flake-like shape, such as talc, or boron nitrides or particles of graphite or organic or mixed particles (Glitter from 3M) or non flake-like components, such as particles of silica, titanium, or iron oxide. Those components may, as appropriate, provide an appearance that is

transparent, translucent, or white or colored.

After applying the non-stick composition, it is possible to remove any surplus by the action of gravity or by a mechanical action (for example by blowing) . The surplus may also be removed using a slightly tacky, gelled or oily surface.

The non-stick composition may include a coloring agent or a mattifying filler.

The non-stick composition may be used to make up relief, projecting or hollowed zones such as pimples, scars, or wrinkles.

It is possible to use an applicator in order to deposit the non-stick composition in a discontinuous manner. As an example, use may be made of small needles, a roller with thickened points, for example erect pins, a multi-outlet applicator, a comb, or a brush.

Particulate composition

During application of the particulate composition, for example to the surface to be treated S, the particles 2 may be fastened to adhesive islets 1 and may have a largest dimension di greater than the largest dimension, d₂, of the islets, as can be seen in Figure 2. Clearly, it is also possible for the particles 2 to have a largest dimension di that is smaller than the largest dimension of the islets d₂.

The particulate composition may comprise particles of one or more pigments. The particles may optionally be reflective, depending on the desired effect. The particulate composition may comprise particles that are flake-like, but they may also have some other shape .

The particles may be spherical or spheroidal in shape .

The term "flake-like" means that the thickness e of the particle is less than its largest dimension d. As an example d/e ≥ 10, or even d/e ≥ 50.

The particles may have at least one face that is flat or has a radius of curvature or 60 ym or more. This can facilitate stacking of the particle and increase their specular reflective power.

The particles may comprise an activatable adhesive composition which in particular means that a step of additional fastening of the particles to the surface to be treated can be carried out. Activation of this compound may follow deposition of the particles of the particulate composition.

As mentioned above, the particulate composition may contain fibers.

The fibers may be natural and, for example, they may be selected from hair, fur, animal hair, textile fibers, or silk.

They may be derived from transforming a natural substance; an example is rayon.

They may be artificial, for example formed from a thermoplastic substance, for example Nylon^®, polyethylene terephthalate (PET) or a PET/Nylon mixture, for example Morphotone^® sold by the supplier Teijin. Irrespective of their nature, the particle size is preferably 10 ym or more, more preferably 20 ym, still more preferably 40 ym or more.

In one example, when the particles are not fibers, the form factor of said particles may be 5 or more, preferably 10 or more, more preferably 50 or more. In particular, the particles may be monodisperse as regards their largest dimension, plus or minus 30%, which facilitates deposition thereof.

The expression "particles that are monodisperse as regards their largest dimension, plus or minus 30 % " as used in the invention denotes particles for which the largest dimension has a coefficient of variation, CV, of 30% or less.

The coefficient of variation CV is defined by the relation CV=— , where s is the standard deviation of the

D

distribution of the largest dimensions of the particles and D is the mean of the largest dimensions thereof.

The mean D and the standard deviation s_ may be measured over 250 particles. Especially when the

particles are not fibers, their surface quality may be regular and not rough.

The fibers may be flexible or rigid.

By way of example, the cross section of the fibers may be circular or oval, as with hair or fur. More generally, they may have cross sections that are

polygonal, for example triangular, square, hexagonal, or octagonal .

The cross section of all or part of a fiber may optionally be constant on moving along its long

direction.

Said cross section may increase or decrease with distance from the zone for fastening to the treated surface, on moving along the long direction.

With a non-circular section, the fiber may have a section that twists on moving along the fiber.

The fibers may be solid or hollow.

The fibers may contain one or more materials, such as coloring agents, for example dyes or pigments. The fibers may in particular contain an activatable adhesive composition that provides an additional step of fastening the particles to the surface to be treated. The fibers may be configured to produce an

interference effect.

The peripheral surface of the fibers may optionally be smooth.

The fibers may optionally be functionalized. They may, for example, be treated, modified, or thermoformed once they have been applied, or before application.

The fibers may optionally be rectilinear. They may, for example, have an inwardly curved portion, for example forming at least one loop. Under such circumstances, the portion of the fiber that faces the surface to be treated may have a rectilinear portion that is at least 5 mm, or preferably 1 cm, long.

The fibers may have stiffness that changes on moving along the long direction. As an example, their stiffness may decrease on moving along the long direction, from the zones for fastening on the treated surface towards their free ends .

The particulate composition may comprise at least two types of fibers that differ in at least one of the following: diameter, length, color, reflectance, and surface quality.

The particles, for example reflective particles, especially with a flake-like shape or in the form of fibers, may be present in a quantity of 30% by weight or more, preferably 50% by weight or more, more preferably

70% by weight or more, and more preferably 80% by weight or more, relative to the total weight of the particulate composition .

The particulate composition may be reflective, in particular when a visual effect is desired.

Case of a reflective particulate composition: measurement of its reflective power and examples of particles used.

The composition for which the reflective power is to be measured was applied to a black Bioskin® surface, sold by the supplier Beaulax, in a uniform manner at a density of 0.2 mg/cm².

The reflective power was measured using the GP-5 goniophotometer from the supplier Murakami.

The angle of incidence was fastened at -45° and the reflectance was measured between -90° and 90°. The maximum reflectance, corresponding to the specular reflectance, was in general measured at 45° and is denoted R₄₅. The minimum reflectance, which corresponded to the diffuse reflectance, was in general measured at -30° and is denoted R-30.

The reflective power of the composition is defined

Irrespective of the shape of the reflective

particles, the reflective power of the particulate composition of the invention is preferably more than 5, more preferably more than 7, and still more preferably more than 10.

Values obtained on applying compositions containing 100% of the following particles:

Particle type Commercial reference R45/R-30

Spherical PMMA Covabead L85 from the supplier 0.9

LCW

Spherical silica SB150 from the supplier 1.1

Miyoshi

Nylon^®, oblong Orgasol 2002 from the supplier 1.4 shape Arkema

Lamellar talc Talc P3 from the supplier 2.4

Luzenac

Bismuth BIRON LF 2000 from the 7.4 oxychloride supplier Merck

Mica - Ti0₂ Prestige Gold from the 8.1 nacre supplier Eckart

Silica flake Silkyflake FTD010 from the 8.4 supplier NSG

Mica - Ti0₂ Flamenco Green 820C from the 10.1 nacre supplier BASF

Synthetic mica PDM-20L from the supplier Topy 14.2

Silver coated Metashine ME2040PS from the 56.8 borosilicate supplier NSG

The particulate composition of the invention

preferably comprises nacres as the reflective flake-like particles .

The term "nacre" means particles that may be of any shape, being iridescent or otherwise, and especially as produced in the shells of certain mollusks or

synthesized, and that present a color effect by optical interference. The color effect obtained corresponds to one of the colors of the rainbow, or gold or silver.

Reflective flake-like particles fall into two major categories :

- flake-like particles having at least two parallel faces, which consist of a single optically uniform material;

- flake-like particles that have a layered structure with at least two layers of optically different materials (pigments with a substrate-coating structure or

multilayer, substrate-free pigments) .

Examples of flake-like particles having at least two parallel faces consisting of a single optical uniform material that may be mentioned are pigments with a metallic effect such as metallic flakes, for example aluminum flakes, or metal alloys, such as copper-zinc, silica particles, synthetic mica, glass, or pigments with a transparent effect such as crystalline bismuth

oxychloride or polycrystalline titanium dioxide.

Examples of metallic pigments that may be mentioned are aluminum, bronze, or copper powders coated with Si02 sold under the trade name VISIONAIRE by the supplier ECKART . Examples of glass flakes that may be mentioned are the products sold under the trade name SILKYFLAKE by the supplier Nippon Sheet Glass.

Examples of pigments based on bismuth oxychloride that may be mentioned are BIRON pigments sold by the supplier Merck and PEARL products sold by the supplier FARMAQUIMIA .

Examples of flake-like particles with a layered structure that may be mentioned are the flake-like particles formed from natural or synthetic mica coated with at least one layer of metallic oxide selected, for example, from oxides of titanium, especially Ti0₂, iron, especially Fe₂0₃, tin, chromium, barium sulfate, and the following materials: MgF₂, CrF₃, ZnS, ZnSe, Si0₂, A1₂0₃, MgO, Y₂0₃, Se0₃, SiO, Hf0₂, Zr0₂, Ce0₂, Nb₂0₅, Ta₂0₅, MoS₂, and mixtures or alloys thereof.

Examples of such particles that may be mentioned are particles comprising a substrate of synthetic mica coated with titanium dioxide, glass particles coated with brown iron oxide, titanium oxide, tin oxide, or one of their mixtures, such as those sold under the trade name

REFLECKS^® by the supplier ENGELHARD.

Mica titanium coated with iron oxide, mica coated with bismuth oxychloride, mica titanium coated with chromium oxide, mica titanium coated with an organic dye, and nacrous pigments based on bismuth oxychloride may also be mentioned. The term "mica titanium" means mica coated with Ti0₂.

Particles of mica of surfaces that are superimposed with at least two successive layers of metallic oxide and/or organic dye substances may also be mentioned. The nacres may have a yellow, pink, red, bronze, orangey, brown, gold, and/or coppery color or glint.

Illustrations of nacres that may be introduced into the particulate composition that may be mentioned are gold colored nacres, especially those sold by the

supplier ENGELHARD with the names Brillant gold 212G (Timica) , Gold 222C (Cloisonne) , Sparkle gold (Timica) , Gold 4504 (Chromalite) and Monarch gold 233X (Cloisonne) ; bronze nacres sold in particular by the supplier MERCK under the trade names Bronze fine (17384) (Colorona) and Bronze (17353) (Colorona) and by the supplier ENGELHARD under the trade name Super bronze (Cloisonne) ; orange nacres sold in particular by the supplier ENGELHARD under the trade name Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica) and by the supplier MERCK under the trade name Passion orange (Colorona) and Matte orange (17449)

(Microna) ; brown tinted nacres sold in particular by the supplier ENGELHARD under the trade name Nu-antique copper 340XB (Cloisonne) and Brown CL4509 (Chromalite); nacres with a copper glint sold in particular by the supplier ENGELHARD under the trade name Copper 340A (Timica) ;

nacres with a red glint sold in particular by the

supplier MERCK under the trade name Sienna fine (17386) (Colorona) ; nacres with a yellow glint sold in particular by the supplier ENGELHARD under the trade name Yellow (4502) (Chromalite); nacres with a red tint and a gold glint in particular sold by the supplier ENGELHARD under the trade name Sunstone G012 (Gemtone) ; pink nacres sold in particular by the supplier ENGELHARD under the trade name Tan opale G005 (Gemtone) ; black nacres with a gold glint, sold in particular by the supplier ENGELHARD under the trade name Nu antique bronze 240 AB (Timica) ; blue nacres sold in particular by the supplier MERCK under the trade name Matte blue (17433) (Microna); white nacres with a silvery glint sold in particular by the supplier MERCK under the trade name Xirona Silver; and orangey, pinkish, green and golden nacres sold in particular by the supplier MERCK under the trade name Indian summer (Xirona), and mixtures thereof. Mention may also be made of glass-based interference particles such as Ronastar from the supplier MERCK or based on synthetic mica such as Sunshine from the supplier SUN CHEMICAL or PROMINENCE from the supplier NIKON KOKEN. It is also possible to mention, as reflective particles, flakes based on PET such as those sold under the reference Disco by the supplier GLITTEREX or under the reference MICROGLITTER by the supplier VENTURE

CHEMICAL.

With a multilayer interference structure in

particular, the reflective particles may, for example, have at least one layer of uniform thickness, especially of a reflective material.

When the reflective particles have a multilayer structure they may, for example, comprise a natural or synthetic substrate, in particular a synthetic substrate at least partially coated with at least one layer of a reflective material, in particular of at least one metal or metallic material. The substrate may be of an organic or inorganic monomaterial or multimaterial . More

particularly, it may be selected from glasses, ceramics, graphite, metallic oxides, aluminas, silicas, and

silicates, in particular aluminosilicates and

borosilicates , synthetic mica, and mixtures thereof; this list is not limiting.

Reflective particles have in particular been

described in the documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP-A-07258460 and JP-A-05017710.

Further examples of reflective particles comprising a mineral substrate coated with a layer of metal that may also be mentioned are particles comprising a substrate of borosilicate coated with silver, sold by the supplier Nippon Sheet Glass under the trade name METASHINE.

The particulate composition may also comprise spherical particles, which may optionally be reflective, as well as oblong particles.

The particles may, for example, be formed from a plastics material, for example Expansel^®, from glass, or from wax. Dimensions of particles employed

In particular, when they are not fibers, the largest dimension of the particles, irrespective of their shape, may be in the range 1 ym and 10 mm, preferably in the range 5 ym to 500 ym, more preferably in the range 10 ym to 200 ym.

The mean particle largest dimension may be smaller than, equal to, or greater than the mean size of the adhesive islets, especially at the moment of their formation.

The "mean dimension" of the particles of the

particulate composition (other than fibers) denotes the statistical granulometric dimension at half the

population, termed D(0.5).

Preferably, the mean particle largest dimension is larger than the mean size of the adhesive islets, especially at the moment of their formation.

As an example, the largest dimension, or even the mean largest dimension, of the particles may be greater than the mean size of the adhesive islets, especially at the moment of their formation, for example more than double this size, for example more than four times this size .

In another example, the largest dimension or even the mean largest dimension of the particles may be greater than the mean distance between two adhesive islets, especially at the moment of formation of the islets of adhesive composition, for example more than double this distance, for example more than four times this distance.

The fibers may have a diameter in the range 1 ym to 1 mm, preferably in the range 10 ym to 200 ym.

The fibers may have a length of 0.1 mm or more, for example 0.3 mm or more, or even 1 mm. As an example, the fibers have a length in the range 1 mm to 50 mm, for example in the range 2 mm to 30 mm. The length of the fibers may be greater than the mean size of the adhesive islets, especially at the moment of their formation, for example more than double this size, for example more than five times this size.

The length of the fibers may be greater than the mean distance separating two adhesive islets, especially at the moment of formation of the adhesive islets, for example more than double this distance, for example more than five times this distance.

The free portion of at least 50%, for example 75% of the deposited fibers, may be more than 50%, for example 75%, of their length.

Other compounds present in the particulate composition The particulate composition may have or may be free of a liquid binder. Preferably, the quantity of liquid binder is less than 20% by weight, more preferably less than 15 O ^" θνθΓΊ 5"6 by weight, so as not to affect the fluidity of the particulate composition too greatly.

Good fluidity of the particulate composition may

facilitate deposition on the surface to be treated and the formation of an esthetically pleasing coating.

The particulate composition may include a volatile solvent .

The term "volatile solvent" as used in the context of the invention means a solvent capable of evaporating in contact with keratinous materials in less than one hour at ambient temperature and atmospheric pressure, having non-zero vapor pressure at ambient temperature and atmospheric pressure, in particular in the range 0.13 pascals (Pa) to 40000 Pa (10^~3 millimeters of mercury (mm Hg) to 300 mm Hg) , in particular in the range 1.3 Pa to 13 000 Pa (0.01 mm Hg to 100 mm Hg) , and more

particularly in the range 1.3 Pa to 1300 Pa (0.01 mm Hg to 10 mm Hg) .

In particular, the volatile solvents are selected from solvents that evaporate at a rate of 0.002 milligrams per square centimeter per minute

(mg/cm²/min) or more. The rate of evaporation is measured as follows:

15 grams (g) of solvent or mixture of solvents to be tested is introduced into a crystallizer (diameter: 7 cm) placed on a balance in a chamber with a volume of

approximately 0.3 cubic meters (m³) at a regulated

temperature (25°C) and humidity (relative humidity 50%).

The liquid is allowed to evaporate freely without stirring, ventilation being provided by a fan (rate of rotation 2700 revolutions per minute (rpm) and dimensions of 80 x 80 x 42 mm, for example the fan with reference 8550 N from PAPST-MOTOREN; the flow rate corresponds to approximately 50 m³/hour) disposed in a vertical position above the crystallizer containing the solvent, the blades being directed towards the crystallizer and at a distance of 20 cm relative to the bottom of the crystallizer.

At regular intervals, the mass of the remaining solvent is measured in the crystallizer. The rates of evaporation are expressed by weight (in mg) of solvent evaporated per unit area (cm²) and per unit time (minute) .

Examples of volatile solvents that may be used in the invention and that may be mentioned are lower

monoalcohols containing 1 to 5 carbon atoms such as ethanol, C3-C4 ketones such as acetone, dimethyl ether or water .

Further examples of volatile solvents that may be mentioned are volatile hydrocarbon oils containing 8 to 16 carbon atoms, especially Cs-Ci₆ branched alkanes such as C8^~Ci₆ isoalkanes of petroleum origin (also termed isoparaffins ) , such as isododecane (also known as

2 , 2 , 4 , 4 , 6-pentamethylheptane) , isodecane, isohexadecane and, for example, oils sold under the trade names Isopars or Permetyls, Cs-Ci₆ branched esters, iso-hexyl

neopentanoate, and mixtures thereof. Other volatile hydrocarbon oils such as petroleum distillates,

especially those sold under the trade name Shell Solt by the supplier SHELL, may also be used. Preferably, the volatile solvent is selected from volatile hydrocarbon oils containing 8 to 16 carbon atoms, and mixtures thereof .

Further, volatile silicones may be used as the volatile solvent, such as volatile linear or cyclic silicone oils, for example, in particular those with a viscosity ≤ 8 centistokes (8 x 10^~6 square meters per second (m²/s)), and in particular containing 2 to 7 silicon atoms, said silicones possibly including alkyl or alkoxy groups containing 1 to 10 carbon atoms.

Particular volatile silicones that may be used in the invention that may be mentioned are octamethyl

cyclotetrasiloxane, decamethyl cyclopentasiloxane, dodecamethyl cyclohexasiloxane, heptamethyl

hexyltrisiloxane, heptamethyloctyl trisiloxane,

hexamethyl disiloxane, octamethyl trisiloxane, decamethyl tetrasiloxane, dodecamethyl pentasiloxane, and mixtures thereof .

The particulate composition may contain at least one or more coloring agents, at least one sunscreen, at least one active ingredient for the treatment of the skin or the lips, non-reflective particles such as diffusing particles, UV screens, or transparent or translucent particles.

Application means

To apply the particulate composition, any applicator that is capable of picking up a particulate composition, for example comprising a foam or flocked tip, may be used. The applicator may comprise a flat tip that is symmetrical in the form of a body of revolution, either cylindrical conical.

The particulate composition may also be applied using a jet of a vector gas, for example using an aerosol can under dimethylether pressure, or by a method of ejection by centrifuging or by an electrostatic method. The fineness of the foam or the thickness of the flocking may be adjusted to allow the user to take an optimized quantity of composition.

If appropriate, the applicator includes a magnetic or magnetizable tip, which may facilitate picking up particles that have a magnetic susceptibility.

As an example, the applicator may comprise an electromagnet. These particles may also be subjected to an electric or magnetic field after being deposited, in order to orientate them.

In order to apply the particulate composition, it is also possible to use a medium, for example in the form of a sheet or patch on which the particulate composition has already been deposited in the form of a particulate layer. The medium may be a paper, a nonwoven fabric, or a plastics material.

It is also possible to use an applicator with suction comprising, for example, a tip covered with a surface that is porous to air and with fineness that prevents the particles from passing through. The tip is connected to a source of suction, for example a pump or a bulb. The user sucks in a small quantity of composition to pick it up and as it comes into contact with the skin, reduces or cancels the suction so that the composition can be deposited.

When the particles are fibers, suction techniques may be used to pick them up and propel them to bring them into contact with the surface to be treated.

Application systems comprising a vibrating

application means may be suitable for applying the particulate composition.

An applicator with the shape of the surface to be treated may be used to apply the required quantity of composition in a single action. As an example, an applicator that is adapted to treating the cheeks, the contour of the eyes, or the hands may be used. When the particles are fibers, they may also be applied to the surface to be treated by holding them at one of their ends. As an example, the fibers are held by electrostatic attraction on a support allowing them to be applied.

The application may be carried out without rubbing the applicator on the surface to be treated.

It is possible to finalize the application by a third action intended, for example, to fasten or remove excess particulate composition.

When the adhesive is of a permanent nature, the user may re-apply the particulate composition when wanted without necessarily having to re-apply the adhesive composition .

The whole surface does not need to be treated with the adhesive composition.

Thus, the adhesive composition may be amply applied and the particulate composition may be applied in a pattern. Next, a non-stick composition, for example a transparent powder, may be applied to the first two compositions. This non-stick composition prevents the zones of adhesive composition not covered by the

particulate composition from retaining adhesive

properties .

It is also possible to apply the adhesive

composition generally and to apply another non-stick composition, for example transparent powder, in a

pattern. Next, the particulate composition of the invention is applied, and becomes fastened on the treated surface only at the zones that have not received the non^¬ stick composition. On eliminating the non-fastened particulate composition, the pattern is observed to appear .

The adhesive composition may also be applied in a pattern, then the particulate composition may be applied to the same zone. The pattern then appears during elimination of the non fastened particles. When the particles are fibers, it is possible to apply the adhesive composition, then to apply the fibers, and then to eliminate the non-fastened fibers from the treated surface, for example from the scalp, the brow ridge, or the eyelids.

It is also possible to cut the ends of the fibers after depositing them.

It is also possible to apply the adhesive

composition, then to apply the fibers, and then to apply a composition comprising particles of the invention other than fibers in order to fill in the adhesive islets that have no fibers .

All or some of the particles of the particulate composition may themselves be adhesive.

The particulate composition may be in the form of a free powder, i.e. it is capable of flowing under gravity when the receptacle in which it is contained is turned over. The adhesive composition may generate particles, for example on drying. By way of example, the adhesive composition may contain substances that are capable of aggregating or crystallizing, such as waxes, for example.

If necessary, agents providing a spreading effect may be added to the adhesive composition, for example a low surface tension compound and/or an agent that reduces the surface tension, so as to enable the adhesive

composition to be spread over the whole of the surface to be treated by a single contact.

The deposit of the particulate composition may be pressed to force it to take on a flattened shape.

The fibers may be held in bundles, e.g. spaced apart, by a removable support. As an example, the fibers are retained in bundles in a matrix of a hydrosoluble material and after carrying out the method, the matrix may be eliminated in order to release the fibers.

Additional fastening of the particles of the particulate composition A second adhesive composition may be used, applied after depositing the particulate composition, and

comprising a resin or a thermofusible wax, for example.

Said second adhesive composition may be different from the adhesive composition that was applied initially.

In a variation, the adhesive composition may

comprise an activatable adhesive compound that is

suitable, in particular, for carrying out a step of additional fastening of the particles to the surface to be treated, activation possibly being carried out

following exposure to air, under UV radiation, or during a reaction with a compound present in the particles of the particulate composition. Activation of the compound may be subsequent to depositing the particles of the particulate composition.

In a variation, when the particles comprise an activatable adhesive compound that may be used in

particular to carry out a step of additional fastening of the particles to the surface to be treated, activation may occur in response to a stimulus: heat, UV radiation, mechanical action (for example pressure with a finger or application of another compound) , or reaction with the adhesive composition. The compound may be activated subsequently to depositing the particles of the

particulate composition.

Application means

When a second adhesive composition is applied after depositing the particulate composition, it may be applied by spraying or printing, or using a flocked tip, a brush, or a roller. The second adhesive composition may be applied by transfer using a sheet or a patch.

Figures 3 to 5 are diagrams showing an example of a cosmetic treatment method in accordance with the

invention, including an additional fastening step.

Firstly, a discontinuous adhesive surface 10 constituted by a discontinuous deposit of adhesive islets 1 is created on the surface to be treated S, as can be seen in Figure 3. Next, particles, shown in a non-limiting manner as being in the form of fibers 2c carrying an adhesive compound that has not yet been activated at its enlarged end 30, are applied, as can be seen in Figure 4.

The adhesive islets 1 fasten the particles 2c and aid in their organization on the surface S.

The step of additional fastening of the particles is then carried out. The activatable compound at the enlarged end 30 of the fibers 2c means that, after activation thereof, additional bonds 20 are available for participating in fastening the fibers 2c on the surface A, as can be seen in Figure 5.

Clearly, it is possible to use particles other than fibers, such as flakes or microbeads, containing an activatable compound.

Kits

In further exemplary embodiments the invention provides a cosmetic kit comprising in a common package:

- an adhesive composition suitable for forming a discontinuous deposit of adhesive particles on a surface of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin or the lips;

- a particulate composition;

- a first application member for applying the adhesive composition to said surface; and

- a second application member for applying the particulate composition to said surface thus coated with adhesive composition.

In other exemplary embodiments the invention

provides a cosmetic kit comprising, in a common package:

- an adhesive composition suitable for forming a continuous deposit of adhesive particles on a surface of human macroscopic keratinous material other than

keratinous fibers, in particular a surface of the skin or the lips, and a non-stick composition suitable for forming a discontinuous deposit and for partially

covering the continuous deposit so as to form a

discontinuous adhesive surface; or

- a non-stick composition suitable for forming a discontinuous deposit of non-stick particles on a surface of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin or the lips, and an adhesive composition suitable for forming a continuous deposit and for least partially covering the non-stick composition so as to form a discontinuous adhesive surface;

- a particulate composition;

- a first application member for applying the adhesive composition to the surface (S) ;

- a second application member for applying the nonstick composition to the surface (S) ; and

- a third application member for applying the particulate composition to the surface (S) thus coated with adhesive composition.

As mentioned above, the adhesive composition may have adhesive properties at the moment of its application to the keratinous material, or it may be activatable.

The kits of the invention may also include, in a common package, a second adhesive composition for

carrying out a step of additional fastening of the particles of the particulate composition.

Further, the kits of the invention may include, in a common package, a fourth applicator for applying the second adhesive composition.

It is also possible for the adhesive composition and/or the particles of the particulate composition to comprise an activatable adhesive compound as described above. The kits of the invention may also include a device for activation of said compound such as a heating device or a source of UV light, for example. The applicators for applying the adhesive

composition, the particulate composition and the optional second adhesive composition may optionally be identical.

The applicators for applying the adhesive

composition, the optional non-stick composition, the optional second adhesive composition and the particulate composition may optionally be identical.

The applicator for applying the non-stick

composition may be used to obtain a continuous or

discontinuous deposit of adhesive composition.

The applicator for applying the non-stick

composition may be used to obtain a discontinuous non^¬ stick deposit.

The adhesive composition, the optional non-stick composition, the particulate composition, any second adhesive composition and the applicator or applicators may be proffered to the user within a common package in the form of a kit.

The adhesive composition, any non-stick composition, the optional adhesive composition and the particulate composition may be packaged separately.

The adhesive or non-stick composition may be

proffered within a common package with an applicator, which may be intended to provide the coating with

heterogeneity. As an example, the applicator could be a roller delivering adhesive or non-stick composition so that a discontinuous deposit is formed therewith. Thus, the adhesive or non-stick composition may be introduced into the roller, the pores of the roller allowing it to be distributed.

The term "package" covers boxes, sachets,

receptacles, cases, and blister packs.

The kit may comprise just one adhesive composition, an optional non-stick composition, an optional second adhesive composition and at least two different

particulate compositions. These compositions may be packaged separately in a common package. The kit may comprise just one adhesive composition, an optional non-stick composition, an optional second adhesive composition and at least two types of fibers. These compositions may be packaged separately in a common package.

The receptacle comprising the adhesive composition and that comprising the particulate composition may be joined together, via a side or a base, for example.

The kit may comprise a means for eliminating the zones of the non-stick composition covered with adhesive composition either before application of the particulate composition, or after application thereof, elimination being carried out, for example, by a mechanical action such as friction, blowing, suction or by bringing in a medium to which the adhesive composition covering the non-stick composition adheres and is torn off with the medium when the medium is removed, while the adhesive composition in contact with the surface to be treated remains adhering thereto.

The kit may include a means for removing surplus particulate composition, for example by aspiration, friction or magnetic or electrostatic attraction.

The particles may have a color close to the color of the surface to be treated (skin, lips etc) , or of the natural pilosity.

EXAMPLES (all proportions are indicated are by weight)

Example 1

Adhesive composition:

Gel-Tac 600D* 10

Hydroxy ethyl cellulose (HEC) 3

Water 77

*Adhesive particles in aqueous solution sold by the supplier Advanced Polymer International (dry extract 44%) . The cosmetic treatment of this example consisted firstly of applying the adhesive composition to the surface to be treated with the aid of a brush or a roller, then waiting for approximately 1 minute. Said composition formed a discontinuous film on the surface to be treated.

A composition of black particles from the supplier Glitterex having the following formulation was then applied using a brush:

Powder 0.006 HEX BLACK COSMETA GEM from the 100 supplier Glitterex

Very good coverage of the skin P was obtained

particles 2a, as illustrated in Figure 6.

Comparative Example 1

The result of Example 1 was compared with that obtained by applying an adhesive composition forming a continuous film (AQ 1350, 4.4% in ethanol) followed by application of the same composition of nacres as above.

The result of Example 1 of the invention was more natural than with the test outside the scope of the invention of comparative Example 1. It was also observed that the result varied less over time.

Example 2

The adhesive composition of Example 1 was applied the eyelids with the aid of a brush or a roller, then a loose powder eyeshadow composition having the following formulation was applied.

Sericite 19

Boron nitride 8

Titanium oxide pigment 5

Iron oxide pigment 3

Bismuth oxychloride 5

Mica-titanium nacres 57

Isononyl isonanoate 3 A highly esthetically pleasing makeup was obtained, with limited overloading and limited loss of particles over time.

Example 3: wrinkle-concealing foundation composition

Firstly, the adhesive composition with the following composition was applied to the face using a roller:

Water 72

Neutralized polysilicone-8 1

Glycerin 5

Gel-Tac 600D* 10

AMPS 1.3

Hydrogenated isoparaffin 4

Undecane/tridecane 6

Nylon powder 0.5

Adenosine 0.1

Citric acid 0.1

*Adhesive particles in aqueous solution sold by the supplier Advanced Polymer International (dry extract

44%) .

Next, the particulate composition having the

following formulation was applied to the face :

Sericite 31

Boron nitride 10

Titanium oxide pigment 12

Iron oxide pigment 8

Bismuth oxychloride 36

Isononyl isonanoate 3 The combination of these two compositions applied one after the other resulted in a makeup that had both good hold and also concealed well imperfections of relief and of color. Example 4

Adhesive composition: Gel-Tac 600D* 10

HEC 3

Water 77

*Adhesive particles in aqueous solution sold by the supplier Advanced Polymer International (dry extract 44%) .

The adhesive composition was applied with a finger to the surface to be treated followed by waiting for approximately 1 minute. By this stage, the solvent had been eliminated.

Next, 10 ym long and 5 mm long fibers were carefully applied using a brush. The brush was dusted lightly over the zone that had received the composition. Simply by tapping, the fibers 2b organized themselves on the skin P and created an erect pilosity as shown in Figure 7. Comparative example 4

The result obtained in Example 4 was compared with that obtained by applying an adhesive composition forming a continuous film (AQ 1350, 4.4% in ethanol) followed by applying the same fibers as above.

In comparative Example 4, not in accordance with the invention, the fibers were not erect and were appressed on the skin.

Example 5

A composition containing an adhesive was applied to the skin.

AQ 1350 (Eastman Chemicals) 20

Ethanol qs 100

Application was carried out using a foam roller studded with 1 mm dots. The dots were produced by depositing and bonding small circular pellets of foam 1 mm in diameter and 3 mm in height onto the foam roller Thus, the adhesive coating obtained was discontinuous. Each adhesive islet was 1 mm in diameter and was spaced from the next one by 2 mm.

Next, by holding them by one end, 10 cm long hairs were brought close. A vibrating motion was employed to assist in bringing them into contact.

After application, the treated surface was turned over in order to use gravity to eliminate hairs that had not bonded. Example 6

A composition containing an adhesive was applied to the skin.

AQ 1350 (Eastman Chemicals) 20

Ethanol qs 100

Application was carried out using a foam roller as described in Example 5. Thus, the adhesive coating obtained was discontinuous. Each adhesive islet was 1 mm in diameter and was spaced from the neighboring one by 2 mm.

Next, a spray (aerosol can, dimethylether

propellant) was used to apply a powder constituted by particles of starch impregnated with a bactericidal agent (triclozan) and a fragrance. The bactericidal agent and the fragrance respectively represented 0.5% and 1% by weight relative to the weight of the starch. After application, a brush was used to eliminate the powder that had not adhered.

The user could reapply with the spray during the day if the powder detached itself from the adhesive portions. Example 7

Adhesive composition:

Gel-Tac 600D* 10

HEC 3

Water 77 *Adhesive particles in aqueous solution sold by the supplier Advanced Polymer International (dry extract 44%) .

The adhesive composition was applied to the surface to be treated, for example the zone of the lips, followed by waiting for approximately 1 minute. By this stage, the solvent had been eliminated. Next, using a very fine brush (2mm at the end of the brush) , a silica powder was applied in order to define the outline of the lips to provide them with a harmonious shape.

Next, bronze reflective nacres were projected onto the treated zone. After eliminating the surplus (spray of air) , it was observed that only the zone onto which the silica had not been applied was covered with nacres. The particles of silica could then be selectively eliminated by rubbing the zone. Since the silica particles were attached less well to the zone than the nacres, they were eliminated more easily. Example 8

This example involved a hairy zone (scalp, eyebrows or armpits) .

It consisted in applying, in a first step, a composition containing 4% of Luviset Si Pur (BASF) , and 10% of talc in a hydroethanolic solvent (50/50) . The composition was applied to the fibers with a comb.

Next, the adhesive composition of Example 7 was applied to the surface of the skin, followed by waiting for approximately 3 minutes. By this stage, the solvent had been eliminated.

Next, small hairs (for the scalp or eyebrow zone) were applied to the zone or particles of aluminum

hydrochloride (for the armpit zone) were applied.

The advantage was that application of the particles was concentrated solely on the skin, rather than being deposited on the fibers. Example 9

The following method was used to create activatable adhesive particles:

A composition containing 10% of AQ 1350 (dry matter weight) and 10% of alginate was prepared. The remainder was demineralized water.

An apparatus was produced whereby the composition could fall into a receptacle in the form of droplets. The composition was then placed in a receptacle and poured via a tube under pressure to exit in the form of droplets .

The droplets fell into a receptacle containing 5% calcium chloride.

Next, the particles that had formed were collected using a filter. These particles were washed with demineralized water.

These particles were not adhesive.

They could be applied to a zone and activated by simple pressure (using a finger) at exactly the regions where an adhesive effect was to be obtained.

Next, cosmetic particles such as nacres could be applied .

It is also possible to proceed as follows:

The activatable adhesive particles are applied and then, using a finger, cosmetic particles such as nacres are applied. Application activates the adhesive

particles and produces an adhesive effect.

Clearly, the invention is not limited to the examples described. As an example, particles other than those illustrated in Examples 1 to 9 may be applied to the surface to be treated.

The expression "comprising a" should be understood as being synonymous with "comprising at least one".

Claims

A method of cosmetic treatment of a surface (S) of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin (P) or lips, comprising:

- creating a discontinuous adhesive surface on the surface (S) ; and

- applying a particulate composition to said

discontinuous adhesive surface.

2. A method according to claim 1, wherein the

discontinuous adhesive surface is formed by applying an adhesive composition forming a discontinuous deposit (10) to the surface (S) .

3. A method according to claim 1, wherein the

discontinuous adhesive surface is formed by applying an adhesive composition forming a continuous deposit to the surface (S) then by applying a discontinuous deposit of a non-stick composition to the continuous deposit .

4. A method according to claim 1, wherein the

discontinuous adhesive surface is formed by applying a non-stick composition forming a discontinuous deposit to the surface (S) then by applying a continuous deposit of an adhesive composition to the

discontinuous deposit.

5. A method according to claim 1, wherein the

discontinuous adhesive surface is formed by applying activatable adhesive particles to said surface (S) followed by activation of said particles.

6. A method according to any one of claims 2 to 5, wherein the adhesive composition comprises a pressure- sensitive adhesive.

A method according to any one of claims 2 to 6, wherein the adhesive composition comprises non-fluid adhesive particles.

A method according to claim 6 or claim 7, wherein the adhesive composition comprises a pressure-sensitive adhesive selected from acrylic polymers, in particular acrylate and methacrylate copolymers, pressure- sensitive adhesives based on rubber or based on styrene copolymers, in particular styrene-isoprene- styrene (SIS) and styrene-butadiene-styrene (SBS) copolymers, polymers of urethane, cross-linked

silicones, ethylene-vinyl acetate polymers, styrene based block copolymers or natural gums, chloroprene, butadiene, isoprene, neoprene polymers, and mixtures thereof .

A method according to claim 8, wherein the pressure- sensitive adhesive is selected from:

- natural rubber (poly (cis-1 , 4-isoprene) ) , methyl- methacrylate-isoprene graft copolymers, styrene butadiene copolymers, butyl rubber, acrylonitrile- butadiene rubber, styrene-isoprene block copolymers, polybutadiene, ethylene-butylene copolymers and polychloroprene ;

- block or statistical copolymers based on acrylic acid, alkyl acrylates and alkyl methacrylates , as well as copolymers of said acrylics with ethylene and vinyl acetate; and

- copolymers of butyl acrylate, butyl methacrylate and acrylic acid, poly (2-ethylhexylacrylate) , and mixtures thereof.

10. A method according to any preceding claim, wherein additional fastening of the particles of the

particulate composition is carried out by means of a second adhesive composition, applied after depositing the particulate composition, and/or by means of an adhesive compound activated while present in the adhesive composition and/or the particles.

11. A method according to any preceding claim, wherein the particulate composition comprises fibers.

12. A method according to any one of claims 1 to 10,

wherein the particulate composition is in powder form, and in particular comprises particles of one or more pigments.

13. A method according to any one of claims 1 to 12,

wherein the quantity of particles in the particulate composition is 30% by weight or more, preferably 50%, more preferably 70% or even 80%.

14. A method according to any preceding claim, used to

recreate a hairy portion.

15. A method according to any preceding claim, used to

make up relief, projecting or recessed zones and/or to obtain a colored effect.

16. A method according to any one of claims 1 to 15,

wherein the mean particle largest dimension is greater than the mean distance between two adhesive islets of the discontinuous adhesive surface.

17. A method according to any preceding claim, the mean size of the adhesive islets of the discontinuous adhesive surface lying in the range 1 ym to 2 mm, preferably in the range 5 ym to 1 mm, more preferably in the range 10 ym to 250 ym.

18. A method according to any preceding claim, the

coverage factor F_coverage = (total surface of adhesive islets that are not connected together) / (total extent of the treated surface) being 0.75 or less, in

particular lying in the range 0.05 to 0.75, preferably 0.1 to 0.5.

19. A method according to any preceding claim, the mean distance between two adhesive islets of the

discontinuous adhesive surface lying in the range 1 ym to 2 mm, preferably in the range 10 ym to 500 ym.

20. A method according to any one of claims 2 and 5 to 19, wherein the adhesive composition applied to the surface (S) includes adhesive particles of average size lying in the range 1 ym to 250 ym, in particular 10 ym to 250 ym.

21. A method according to any preceding claim, being a

cosmetic treatment method of a surface of the skin, in particular of the scalp, or lips.

22. A cosmetic kit comprising, in a common package:

- an adhesive composition suitable for forming a discontinuous deposit of adhesive particles on a surface (S) of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin (P) or lips;

- a particulate composition;

- a first application member for applying the adhesive composition to said surface (S) ; and

- a second application member for applying the particulate composition to said surface (S) thus coated with adhesive composition. A cosmetic kit according to the preceding claim, the adhesive composition including adhesive particles of average size lying in the range 1 ym to 250 ym, in particular 10 ym to 250 ym.

A cosmetic kit comprising, in a common package:

- an adhesive composition suitable for forming a continuous deposit of adhesive particles on a surface (S) of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin (P) or lips, and a non-stick composition suitable for forming a discontinuous deposit and for partially covering the continuous deposit so as to form a discontinuous adhesive surface; or

- a non-stick composition suitable for forming a discontinuous deposit of non-stick particles on a surface (S) of human macroscopic keratinous material other than keratinous fibers, in particular a surface of the skin or lips, and an adhesive composition suitable for forming a continuous deposit and for least partially covering the non-stick composition so as to form a discontinuous adhesive surface;

- a particulate composition;