FR2891738A1 - Process for make up and/or care of nails, comprises applying a composition without pigment having metallic oxide i.e. untreated on the surface, comprising cyanoacrylate monomer, and applying a composition comprising film forming polymer - Google Patents

Abstract

Process for make up and/or care of nails, comprises applying a layer of a first composition without pigment containing metallic oxide i.e. untreated on the surface, comprising at least a cyanoacrylate monomer (I), applying a layer of a second composition comprising a film forming polymer to the first layer and optionally applying a layer of the mixture of two compositions on the nail. Process for make up and/or care of nails, comprises applying a layer of a first composition without pigment containing metallic oxide i.e. untreated on the surface, comprising at least a cyanoacrylate monomer (I) of formula CN-C(CH 2)-COO-R, applying a layer of a second composition comprising a film forming polymer to the first layer and optionally applying a layer of the mixture of two composition on the nail. R : (alkoxy)alkyl, preferably 6-10C (alkoxy)alkyl. An independent claim is included for a make-up or care kit for nails comprising the first and second compositions.

Description

The present invention relates to a method for the production of COO-R (I)

  makeup process and / or care of nails or false nails and a make-up kit for nails or false nails.

  In general, the makeup of nails or false nails is binding because it requires a significant amount of time. Indeed, the user of nail polish applies several layers of varnish that must be allowed to dry. After 3 to 5 days, the varnish flakes and the gloss decreases, the user of nail polish must remove makeup and make up the nails again.

  Consequently, for the sake of proposing nail makeup compositions, or false nails, having better hold, nail polish compositions in the form of a kit of two nail polish compositions to be applied one on the other have been proposed, the composition applied in base coat having an adhesive role that strengthens the strength of the top layer. However, the strength remains average because of the more or less long drying time and poor hardening of the film of the base composition, which affects the quality of the final film of varnish, especially in terms of strength and gloss. Adhesive systems are known, such as cyanoacrylates, which polymerize in situ and make it possible to obtain a film of varnish of good hardness, however some of these adhesive systems exhibit a high reactivity with respect to certain compounds. for example, coloring agents and especially uncoated pigments based on metal oxide, which is detrimental to their use in conventional colored nail varnishes and makes them more suitable for uses as glue for false nails.

  The present invention aims precisely to provide a method of makeup and / or care of nails or false nails to overcome the aforementioned drawbacks, that is to say that allows to obtain a film on the glossy nail , having an improved behavior over time and is cosmetically acceptable, that is to say compatible for use on keratin materials, in particular the nails of human beings.

  More specifically, the subject of the invention is a process for makeup and / or nail care consisting of: a) applying to the nail at least one layer of a first composition free of metal oxide-based pigment untreated surface treatment comprising at least one cyanoacrylate monomer of formula (I) 2 H 2 CNC COO-R (I) in which R represents an alkyl or alkoxyalkyl radical, b) then to apply to said layer at least one layer of a second composition.

  According to a variant, the subject of the invention is a process for makeup and / or nail care consisting of: a) applying to the nail at least one layer of a first composition comprising at least one n-octyl monomer 2- cyanoacrylate, b) then to apply on said layer at least one layer of a second composition.

  The terms first and second compositions do not condition the order of application of said compositions to the nails. The second composition may be applied to the first composition and vice versa.

  According to another variant, another subject of the invention is a process for makeup and / or nail care consisting of: a) extemporaneously mixing: at least one first composition comprising at least one cyanoacrylate monomer of formula (I) ) H2C (ON COO-R (I) wherein R represents an alkyl or alkoxyalkyl radical, and - at least one second composition, then b) to be applied to the nail at least one layer of said mixture

  According to one embodiment, at least one additional layer of at least one third liquid composition, such as a conventional nail polish, comprising a film-forming polymer and an organic or aqueous solvent medium is applied to the second composition layer so that for example to improve the behavior and / or brightness of it. In another aspect, the present invention also provides a makeup or nail care kit comprising: i) a first composition comprising at least one cyanoacrylate monomer of formula (I) CN H2C (COO-R (I) in where R represents an alkyl or alkoxyalkyl radical, ii) a second composition.

  Preferably, the make-up kit according to the invention comprises the first and second compositions in separate packages.

  The invention further relates to the use of a kit as described above, to obtain a film deposited on the nail, having improved holding properties and / or wear resistance.

  The varnish film also has a significant behavior over time and especially at the scale of at least 5 days, preferably one week. It is thus resistant to water, friction and shock, and shows no significant wear or peeling within this time.

Cvanoacrvlate monomer

  The cyanoacrylate monomer of the first composition used in the process according to the invention has the following formula: ## STR2 ## in which R represents an alkyl or alkoxyalkyl radical, in the context of the invention, the radicals Alkyl or alkoxyalkyl may be linear, branched or cyclic. As cyanoacrylate monomers of formula (I), mention may be made of electrophilic monomers such as ethyl 2-cyanoacrylate, methyl 2-cyanoacrylate, n-propyl-2-cyanoacrylate, 2-cyanoacrylate and the like. isopropyl, tertbutyl 2-cyanoacrylate, n-butyl 2-cyanoacrylate, isobutyl 2-cyanoacrylate, 3-methoxybutyl cyanoacrylate, n-decyl cyanoacrylate, hexyl 2-cyanoacrylate 2-ethoxyethyl 2-cyanoacrylate, 2-methoxyethyl 2-cyanoacrylate, 2-octyl 2-cyanoacrylate, 2-propoxyethyl 2-cyanoacrylate, noctyl 2-cyanoacrylate, and isoamyl cyanoacrylate. According to one particular embodiment, the cyanoacrylate monomers of formula (I) are chosen from those comprising alkyl or alkoxyalkyl R radicals comprising from 1 to 10 carbon atoms, preferably from 6 to 10 carbon atoms.

  Preferably, the cyanoacrylate monomer is chosen from (C 6 -C 10) alkyl-cyanoacrylates. Particularly preferred monomers are octyl cyanoacrylates of formula (II) and mixtures thereof: CN 20 CH2 = C COO-R'3 wherein: R'3 is selected from = - (CH2) 7-CH3, -CH (CH 3) - (CH 2) 5 -CH 3, -CH 2 -CH (C 2 H 5) - (CH 2) 3 -CH 3, - (CH 2) 5 -CH (CH 3) -CH 3, - (CH 2) 4 -CH (C 2 H 5) - CH 3, and mixtures thereof The particularly preferred cyanoacrylate monomer according to the invention is linear or branched octyl 2-cyanoacrylate, for example that sold under the commercial reference RITELOK CDN 1064 by the company Chemence.

  The monomers used in the first composition used in the invention can be covalently attached to supports such as polymers, oligomers or dendrimers. The polymer or oligomer may be linear, branched, comb or block. The distribution of the monomers of the invention on the polymer, oligomeric or dendritic structure can be statistical, in the terminal position or in block form.

  The cyanoacrylate monomers of formula (I) according to the present invention can be synthesized according to the known methods described in the art. In particular, the cyanoacrylate monomers can be synthesized according to the teaching of US 3,527,224, US 3,591,767, US 3,667,472, US 3,995,641, US 4,035,334 and US 4,650,826.

  In the first composition, the amount of cyanoacrylate monomer can range from 0.1 to 100% by weight of the total weight of the first composition, more preferably from 1 to 50%, preferably from 2 to 30% and better still from 5 to 20%. % in weight.

  In the context of the invention, the cyanoacrylate monomers of formula (I) are electrophilic monomers capable of polymerizing anionically in the presence of a nucleophilic agent such as, for example, the hydroxide ions (OH-) contained in the water at neutral pH. By anionic polymerization is meant the mechanism defined in Jerry March's "Advanced Organic Chemistry", Third Edition, pages 151 to 161.

  Nucleophilic Agents The nucleophilic agents capable of initiating the anionic polymerization are systems known in themselves, capable of generating a carbanion in contact with a nucleophilic agent, such as the hydroxide ions contained in the water at neutral pH. By "carbanion" is meant the chemical species defined in Jerry March's "Advanced Organic Chemistry, Third Edition", page 141. The nucleophilic agent is a molecular compound, an oligomer, a dendrimer or a polymer having nucleophilic functions. In a nonlimiting manner, the following functions may be mentioned as nucleophilic functions: R2N-, NH2-, Ph3C-, R3C-, PhNH-, pyridine, ArS-, RCC-, RS-, SH-, RO-, R2NH, ArO- N3, OH-, ArNH2, NH3, 1-, Br, C1-, RCOO-, SCN-, ROH, RSH, NCO-, CN-, NO3, CI04, H2O, Ph is phenyl; Ar represents an aryl group and R represents a C1-C10 alkyl group.

  The nucleophilic agents may be applied independently of the first composition of the invention, for example by prior application to the nails. They can also be added to the first composition at the time of use. According to one variant, they are present in the second composition used in the process according to the invention.

  Preferably, this nucleophilic agent is water. This water may already be present on the support on which the nail polish is applied: it may be in particular the residual water naturally present in the nails; water can also be provided for example by prior moistening of the nails (for example by a mist). It may also be added directly to the first composition before application or may be present in the second composition used in the process according to the invention, for example when it comprises an aqueous phase.

  The nucleophilic agent can be used pure, in solution, in the form of an emulsion or encapsulated.

  It is also possible to introduce into the composition of the invention polymerization inhibitors, and more particularly anionic and / or radical polymerization inhibitors, in order to increase the stability of the composition over time. In a nonlimiting manner, mention may be made of the following polymerization inhibitors: sulfur dioxide, nitric oxide, organic acids such as a sulphonic acid or phosphoric acid, acetic acid, lactone, trifluoride and the like. boron, hydroquinone and its derivatives such as hydroquinone monethyl ether, tert-butylhydroquinone, benzoquinone and its derivatives such as duroquinone, catechol and its derivatives such as t-butyl catechol and methoxycatechol, anisole and its derivatives such as methoxyanisole or hydroxyanisole, pyrogallol and its derivatives, p-methoxyphenol, hydroxybutyl toluene, alkyl sulphates, alkyl sulphites, alkyl sulphones, alkyl sulphoxides, alkyl sulphides, mercaptans, and their mixtures. The alkyl groups preferably denote groups having 1 to 6 carbon atoms.

  The inhibitor concentration in the composition of the invention can be from 10 ppm to 10%, and more preferably from 50 ppm to 5% by weight.

  Cosmetically acceptable medium The first, second and optionally third compositions naturally comprise a cosmetically acceptable medium, ie a non-toxic medium that can be applied to the nails of humans and of appearance, odor and to touch pleasant. Organic solvent phase The first composition and / or the second composition advantageously comprises a liquid organic solvent phase comprising at least one organic solvent. As organic solvent that may be used in the composition according to the invention, mention may be made of: short-chain esters (having from 3 to 8 carbon atoms in total), such as ethyl acetate and methyl acetate; propyl acetate, n-butyl acetate, isopentyl acetate; ketones which are liquid at ambient temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone, acetone; alcohols which are liquid at ambient temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol or cyclohexanol; glycols which are liquid at ambient temperature, such as ethylene glycol, propylene glycol, pentylene glycol, glycerol; propylene glycol ethers which are liquid at ambient temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether; aldehydes which are liquid at ambient temperature, such as benzaldehyde or acetaldehyde; carbonates such as propylene carbonate and dimethyl carbonate; acetals such as methylal; and - their mixtures.

  Preferably, the solvent is a volatile solvent selected from short-chain esters (having from 3 to 8 carbon atoms in total) such as ethyl acetate, methyl acetate, propyl n-butyl acetate, isopentyl acetate, and mixtures thereof. Generally, the organic solvent phase (organic solvent or organic solvent mixture) liquid represents from 5 to 95% of the total weight of each of the first and / or second composition, preferably from 10% to 85% by weight.

  According to one embodiment, the first and second compositions used in the process according to the invention are anhydrous, that is to say free of water other than the residual water provided by certain compounds.

  Aqueous phase The first and / or second composition may comprise an aqueous phase consisting of water and optionally water-soluble solvents. According to one embodiment, the first composition is anhydrous and the second composition may comprise an aqueous phase. may in this case represent from 5 to 95% by weight relative to the total weight of the second composition, preferably from 10% to 85% by weight. Film-forming polymer The first and / or second composition advantageously comprises a film-forming polymer.

  By film-forming polymer is meant a polymer capable of forming on its own or in the presence of an auxiliary film-forming agent, a macroscopically continuous film on a support, for example the keratin materials. The film-forming polymer may be present in a content ranging from 0.1% to 60% by weight, relative to the total weight of the first and / or second composition, preferably ranging from 2% to 40% by weight, and better from 5% to 25% by weight.

  According to a first variant, the film-forming polymer is a polymer chosen from the group comprising: film-forming polymers which are soluble or dispersible in at least one class of organic solvent such as, for example, ketones, alcohols, glycols and propylene glycol ethers, short-chain esters, alkanes and their aqueous or non-aqueous mixtures. The corresponding polymers can be of any chemical nature. In particular, they can result either from the homo- or copolymerization of unsaturated monomers, or from polycondensation, or from the modification of natural polymers, in particular polysaccharides. The weight average molecular weights (Mw) of these polymers may range from about 3,000 to about 1,000,000, especially from about 5,000 to about 800,000, and in particular from about 10,000 to about 500,000. Among the soluble or dispersible polymers in solvents the following polymers are particularly suitable: a) homo- and co-polymers of (meth) acrylic acid esters and / or amides, in particular the polymers resulting from the polymerization or copolymerization of methyl acrylates and / or methacrylates ethyl, propyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, cyclohexyl, ethyl 2-hexyl, heptyl, octyl, isobornyl, norbornyl, adamantyl, or the corresponding (meth) acrylamides. These polymers will preferably comprise from 0 to 20% of a polar comonomer such as (meth) acrylic acid, (meth) acrylamide, hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and (meth) acrylonitrile. They can also result from the copolymerization with styrene or substituted styrene. b) Homo- and co-polymers, vinyl esters or amides, in particular homo-and co-polymers resulting from the polymerization of vinyl acetate, vinyl propionate, vinyl versatate, with or without the presence of a comonomer polar such as crotonic acids, allyloxyacetic acid, maleic anhydride (or acid), anhydride (or acid) itaconic, vinyl acetamide and vinyl formamide. Likewise, they can result from the copolymerization of at least one of the monomers mentioned with styrene or substituted styrene. c) celluloses and cellulose derivatives such as nitrocelluloses and / or cellulose esters such as cellulose acetates, cellulose propionates, cellulose butyrates, cellulose acetopropionates and cellulose acetobutyrates. As the film-forming polymer, RS 1/8 nitrocellulose can be used in particular; RS 1/4 sec. ; 1/2 sec. ; RS 5 sec. ; RS 15 sec. ; RS 35 sec. ; RS 75 sec .; RS 150 sec; AS 1/4 sec. ; AS 1/2 sec. ; SS 1/4 sec. ; SS 1/2 sec. ; SS 5 sec., Especially marketed by the company HERCULES. d) Soluble or dispersible polycondensates in these solvents. They are generally used as the main film former or as cofilmogen of one of the polymer classes mentioned above (a to c), in particular if they are of low molecular weight (Mw <20,000). They may be chosen from the following polymers or copolymers: polyurethanes, acrylic polyurethanes, polyureas, polyurea polyurethanes, polyester polyurethanes, polyether polyurethanes, polyesters, polyesteramides, fatty-chain polyesters, epoxies, and arylsulfonamide condensates and in particular tosylamide / formaldehyde, among these polycondensates, in particular if they are used as film-forming or co-film-forming agent of one or more nitrocelluloses and / or a cellulose ester (class c), it is possible to more particularly, mention may be made of: polyesters, in particular fatty-chain polyesters and more particularly copolymers of CTFA name: phthalic anhydride / glycerol / glycidyl decanoate copolymer and adipic acid / neopentylglycol / trimellitic anhydride copolymer alkyds, condensates tosylamide / formaldehyde, polyurethanes and polyurea urethanes acrylic resins ues. silicone resins (non-volatile or partially volatile).

  According to one embodiment of the invention, the film-forming polymer is a film-forming linear ethylenic block polymer, which preferably comprises at least a first block and at least a second block having different glass transition temperatures (Tg), said first and second sequences being interconnected by an intermediate sequence comprising at least one constituent monomer of the first block and at least one constituent monomer of the second block. Advantageously, the first and second sequences and the block polymer are incompatible with each other. Such polymers are described for example in EP1411069 or WO04 / 028488.

  According to a second variant of the invention, the second composition comprises at least one film-forming polymer chosen from aqueous dispersions of polymer particles or film-forming latexes, and in this case the second composition according to the invention comprises at least one aqueous phase. The aqueous dispersion comprising one or more film-forming polymers may be prepared by a person skilled in the art on the basis of his general knowledge, in particular by emulsion polymerization or by dispersion of the previously formed polymer. Among the film-forming polymers of this type that may be used in the composition according to the present invention, mention may be made of synthetic polymers, of the polycondensate type or of a radical type, polymers of natural origin, and their mixtures. The polymers (homo- and co-polymers) which are mentioned above as soluble or dispersible polymers in an organic solvent medium, and more particularly polymers of classes a, b and c, may in particular be used but in latex form. Examples of polycondensates that may be mentioned include anionic, cationic, nonionic or amphoteric polyurethanes, polyurethane-acrylics, polyurethanesulfonylpyrrolidones, polyester-polyurethanes, polyether-polyurethanes, polyureas, polyurea polyurethanes, and mixtures thereof. Mention may also be made of polyesters, polyester amides, fatty-chain polyesters, polyamides and epoxy ester resins. The polyesters can be obtained, in known manner, by polycondensation of aliphatic or aromatic diacids with aliphatic or aromatic diols or polyols.

  As aliphatic diacids, there may be used succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid or sebacic acid. As aromatic diacids, it is possible to use terephthalic acid or isophthalic acid, or else a derivative such as phthalic anhydride. As aliphatic diols, it is possible to use ethylene glycol, propylene glycol, diethylene glycol, neopentyl glycol, cyclohexane dimethanol and 4,4 '- (1-methylpropylidene) bisphenol. As polyols, it is possible to use glycerol, pentaerythritol, sorbitol, trimethylolpropane.

  The radical-type polymers may in particular be polymers, or copolymers, acrylic and / or vinyl. Anionic radical polymers are preferably used. As anionic group-bearing monomer that can be used during the radical polymerization, mention may be made of acrylic acid, methacrylic acid, crotonic acid, maleic anhydride and 2-acrylamido-2-methylpropanesulphonic acid. Acrylic polymers may result from the copolymerization of monomers selected from esters and / or amides of acrylic acid or methacrylic acid. As examples of ester monomers, mention may be made of methyl methacrylate, ethyl methacrylate, butyl methacrylate, isobutyl methacrylate, 2-ethylhexyl methacrylate and lauryl methacrylate. Examples of amide monomers include N-t-butyl acrylamide and N-t-octyl acrylamide. The vinyl polymers may result from the homopolymerization or copolymerization of monomers chosen from vinyl esters, styrene or butadiene. Examples of vinyl esters include vinyl acetate, vinyl neodecanoate, vinyl pivalate, vinyl benzoate and vinyl t-butyl benzoate. It is also possible to use acrylic / silicone copolymers. Mention may also be made of the polymers resulting from the radical polymerization of one or more radical monomers inside and / or partially at the surface of pre-existing particles of at least one polymer chosen from the group consisting of polyurethanes and polyureas. polyesters, polyesteramides and / or alkyds. These polymers are generally called hybrid polymers. The dispersion may also comprise a polyurethane-type associative polymer or a natural gum, such as xanthan gum.

  As polymer in aqueous dispersion, mention may be made of the acrylic polymer dispersions sold under the names NEOCRYL XK-90, NEOCRYL A-1070, NEOCRYL A-1090, NEOCRYL BT-62, NEOCRYL A-1079, NEOCRYL A-523 by the company ZENECA, DOW LATEX 432, by the company DOW CHEMICAL. It is also possible to use aqueous polyurethane dispersions, and especially the polyester-polyurethanes sold under the names AVALURE UR-405, AVALURE UR-410, AVALURE UR-425, SANCURE 2060 by the company GOODRICH and the polyether polyurethanes sold under the names SANCURE 878 by the company GOODRICH, NEOREZ R970 by the company AVECIA. All of the aforementioned film-forming polymers may be associated with at least one auxiliary film-forming agent. The auxiliary film-forming agent may be chosen from all the compounds known to those skilled in the art as being capable of fulfilling the desired function, and may especially be chosen from plasticizers and coalescing agents of the film-forming polymer.

  In particular, mention may be made, alone or as a mixture, of the usual plasticizers or coalescence agents, such as: glycols and their derivatives such as diethylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol butyl ether or else diethylene glycol hexyl ether ethylene glycol ethyl ether, ethylene glycol butyl ether, ethylene glycol hexyl ether; glycol esters, propylene glycol derivatives and in particular propylene glycol phenyl ether, propylene glycol diacetate, dipropylene glycol butyl ether, tripropylene glycol butyl ether, propylene glycol methyl ether, dipropylene glycol ethyl ether, tripropylene glycol methyl ether and diethylene glycol glycol methyl ether, propylene glycol butyl ether, especially carboxylic acid esters such as citrates, especially triethyl citrate, tributyl citrate, triethyl acetyl citrate, tributyl acetyl citrate, triethyl-2 acetyl citrate; hexyl; phthalates, especially diethyl phthalate, dibutyl phthalate, dioctyl phthalate, dipentyl phthalate, dimethoxyethyl phthalate; phosphates, especially tricresyl phosphate, tributyl phosphate, triphenyl phosphate, tributoxyethyl phosphate; tartrates, especially dibutyl tartrate; adipates; carbonates; sebacates; benzyl benzoate, butyl acetylricinoleate, glyceryl acetylricinoleate, butyl glycolate, camphor, glycerol triacetate, N-ethyl-o, p-toluenesulfonamide, oxyethylenated derivatives such as oxyethylenated oils, especially vegetable oils such as castor oil; silicone oils, their mixtures. The type and amount of plasticizing and / or coalescing agent may be selected by those skilled in the art based on their general knowledge. For example, the content of plasticizer and / or coalescence can range from 0.01% to 20% and in particular from 0.5% to 10% by weight relative to the total weight of each of the first and / or second composition .

additives

  Dyestuffs The first, second and possibly third compositions used in the process according to the invention may comprise at least one dyestuff chosen for example from pigments, nacres (or pearlescent pigments), dyes, effect pigments and their mixtures. These dyestuffs may be present in a content ranging from 0.01% to 50% by weight, relative to the weight of the composition, preferably from 0.01% to 30% by weight of each composition. According to a particular embodiment, the composition comprising the

  The electrophilic monomer is free of pigments which are not surface-treated, in particular not surface-treated with an organic and / or hydrophobic agent, or not covered with an organic layer. Even more particularly, the composition comprising the electrophilic monomer is free of pigments and surface-untreated fillers. The surface-treated pigments or fillers are pigments or fillers which have undergone totally or partially a chemical, electronic, electro-chemical, mechanical-chemical or mechanical surface treatment with an agent such as those described in particular in US Pat. Cosmetics and Toiletries, February 1990, Vol. 105, p. 53-64.

  According to another embodiment, the composition comprising the electrophilic monomer is free of pigments, more particularly pigments and fillers.

  The surface-treated pigments or fillers are pigments or fillers which have undergone totally or partially a chemical, electronic, electro-chemical, mechanical-chemical or mechanical surface treatment with an agent such as those described in particular in US Pat. Cosmetics and Toiletries, February 1990, Vol. 105, p. 53-64.

  According to another embodiment, the composition comprising the electrophilic monomer is free of pigments and fillers.

  According to another embodiment, the composition comprising the electrophilic monomer according to the invention comprises a surface-treated pigment, in particular surface-treated with an organic and / or hydrophobic agent, or covered with an organic layer. Preferably, the composition comprising no electrophilic monomer advantageously comprises at least one dyestuff. i) Pigments and dyes The dyestuff may be organic or inorganic, in particular of the type of pigment or nacre conventionally used in cosmetic compositions. The term "pigments" is intended to mean white or colored, mineral or organic, insoluble or aqueous particles intended to color and / or opacify the resulting film. The pigments may be present in a proportion of from 0.01 to 20% by weight, in particular from 0.01 to 15% by weight, and in particular from 0.02 to 10% by weight, relative to the total weight of each of the first and second composition. As inorganic pigments that may be used in the invention, mention may be made of titanium, zirconium or cerium oxides, as well as oxides of zinc, iron or chromium, ferric blue, manganese violet, ultramarine blue, and Chromium hydrate. It may also be a pigment having a structure which may for example be sericite / brown iron oxide / titanium dioxide / silica. Such a pigment is marketed for example under the reference COVERLEAF NS or JS by CHEMICALS AND CATALYSTS and has a contrast ratio of about 30. The dyestuff may also comprise a pigment having a structure which may for example be of microsphere type. of silica containing iron oxide. An example of a pigment having this structure is that marketed by MIYOSHI under the reference PC BALL PC-LL-100 P, this pigment consisting of silica microspheres containing yellow iron oxide. Among the organic pigments that can be used in the invention, mention may be made of carbon black, D & C type pigments, cochineal carmine, barium, strontium, calcium, aluminum or diketo pyrrolopyrrole (DPP) lacquers. ) described in EP-A-542669, EP-A-787730, EP-A-787731 and WO-A-96/08537. By nacres or pearlescent pigments, it is necessary to include colored particles of any shape, iridescent or not, in particular produced by certain shellfish in their shell or else synthesized and which exhibit a color effect by optical interference. The pearlescent agents may be chosen from pearlescent pigments such as iron oxide-coated titanium mica, bismuth oxychloride-coated mica, titanium mica coated with chromium oxide, titanium mica coated with a dye. organic and pearlescent pigments based on bismuth oxychloride. It may also be mica particles on the surface of which are superimposed at least two successive layers of metal oxides and / or organic dyestuffs. Mention may also be made, by way of example of nacres, of natural mica coated with titanium oxide, with iron oxide, with natural pigment or with bismuth oxychloride.

  Among the nacres available on the market, mention may be made of mother-of-pearl TIMICA, FLAMENCO and DUOCHROME (based on mica) marketed by ENGELHARD, TIMIRON pearls marketed by MERCK, mother-of-pearl containing PRESTIGE mica marketed by the company. ECKART and nacres based on SUNSHINE synthetic mica sold by the company SUN CHEMICAL.

  The nacres may more particularly have a color or a yellow, pink, red, bronze, orange, brown, gold and / or coppery reflection. As an illustration of nacres that can be used in the context of the present invention, mention may be made especially of gold-colored nacres sold especially by ENGELHARD under the name Brillant gold 212G (Timica), Gold 222C (Cloisonne), Sparkle gold (Timica), Gold 4504 (Chromalite) and Monarch gold 233X (Cloisonne); bronze nacres sold especially by the company Merck under the name Bronze Fine (17384) (Colorona) and Bronze (17353) (Colorona) and by Engelhard under the name Super Bronze (Cloisonne); orange nacres sold especially by the company Engelhard under the name Orange 363C (Cloisonne) and Orange MCR 101 (Cosmica) and by the company Merck under the name Passion Orange (Colorona) and Matte Orange (17449) (Microna); brown-colored pearlescent agents marketed by Engelhard under the name Nu-antique copper 340XB (Cloisonne) and Brown CL4509 (Chromalite); nacres with a copper sheen sold especially by Engelhard under the name Copper 340A (Timica); the nacres with a red glint sold especially by MERCK under the name Sienna fine (17386) (Colorona); yellow-colored pearlescent agents marketed by ENGELHARD under the name Yellow (4502) (Chromalite); the red-colored pearlescent agents with a gold glint sold especially by ENGELHARD under the name Sunstone G012 (Gemtone); pink nacres sold especially by Engelhard under the name Tan opal G005 (Gemtone); the black nacres with gold reflection sold by the company Engelhard under the name Nu antique bronze 240 AB (Timica), the blue nacres sold especially by the company Merck under the name Matte Blue (17433) (Microna), the white nacres with reflection silver sold in particular by the company Merck under the name Xirona Silver and the golden-green orange-colored mother-of-pearl marketed by Merck under the name Indian summer (Xirona) and their mixtures.

  The compositions may also comprise water-soluble or fat-soluble dyes in a content ranging from 0.01 to 10% by weight, especially ranging from 0.01 to 5% by weight relative to the total weight of each composition. Liposoluble dyes are, for example, Sudan Red, DC Red 17, DC Green 6, [3-carotene, soybean oil, Sudan Brown, DC Yellow 11, DC Violet 2, Orange DC 5 , yellow quinoline. The water-soluble dyes are, for example, beet juice, methylene blue.

  ii) Effect Piece The compositions of the process according to the invention may contain at least one material with a specific optical effect, especially present in the second composition. This effect is different from a simple conventional hue effect, that is to say unified and stabilized as produced by conventional dyestuffs described above such as monochromatic pigments. In the sense of the invention, stabilized means devoid of color variability effect with the angle of observation or in response to a change in temperature. This material is present in sufficient quantity to produce an optical effect perceptible to the naked eye. Advantageously, it is an effect selected from the goniochromatic, metallic and in particular mirror, soft-focus, rainbow and / or thermochromic effects. For example, this material may be chosen from particles with a metallic sheen, goniochromatic coloring agents, diffractive pigments, thermochromic agents, optical brighteners, as well as fibers, in particular interferential fibers. Of course, these different materials may be combined so as to provide simultaneous manifestation of two effects, or even of a new effect according to the invention.

  Particles with Metallic Reflection Particles with metallic reflection are particles whose nature, size, structure and surface state allow them to reflect the incident light, particularly in a non-iridescent manner. The particles having a substantially flat outer surface are also suitable because they can more easily give birth, if their size, structure and surface condition allow, to an intense specular reflection that can be called a mirror effect. The metal-reflecting particles which can be used in the invention can, for example, reflect light in all visible components without significantly absorbing one or more wavelengths. The spectral reflectance of these particles may for example be greater than 70% in the range 400-700 nm, and more preferably at least 80%, even 90% or 95%. These particles generally have a thickness less than or equal to 1 μm, in particular less than or equal to 0.7 μm, in particular less than or equal to 0.5 μm.

  The total proportion of particles with a metallic sheen is in particular less than or equal to 20% by weight and in particular less than or equal to 10% by weight relative to the total weight of the composition. The particles with metallic sheen that can be used in the invention are in particular chosen from: the particles of at least one metal and / or at least one metal derivative, the particles comprising a substrate, organic or inorganic, monomaterial or multimaterial, covered at least partially by at least one metal-reflecting layer comprising at least one metal and / or at least one metal derivative, and mixtures of said particles.

  Among the metals that may be present in said particles, mention may be made, for example, of Ag, Au, Cu, Al, Ni, Sn, Mg, Cr, Mo, Ti, Zr, Pt, Va, Rb, W, Zn, Ge, Te. Se and their mixtures or alloys. Ag, Au, Cu, Al, Zn, Ni, Mo, Cr, and mixtures or alloys thereof (eg, bronzes and brasses) are preferred metals. The term "metal derivatives" denotes compounds derived from metals, in particular oxides, fluorides, chlorides and sulphides. Among the metal derivatives that may be present in said particles, mention may in particular be made of metal oxides, such as, for example, titanium oxides. especially TiO2, iron including Fe2O3, tin, chromium, barium sulfate and the following compounds: MgF2, CrF3, ZnS, ZnSe, SiO2, Al2O3, MgO, Y2O3, SeO3, SiO, HfO2, ZrO2, CeO2, Nb2O5, Ta2O5, MoS2 and mixtures or alloys thereof. According to a first variant, the particles with a metallic sheen may be composed of at least one metal as defined above, at least one metal derivative as defined above or else one of their mixtures.

  These particles may be at least partially covered by a layer of another material, for example an transparent material such as in particular rosin, silica, stearates, polysiloxanes, polyester resins, epoxy resins, polyurethane resins and acrylic resins. As an illustration of these particles, mention may be made of aluminum particles, such as those sold under the names STARBRITE 1200 EAC by the company SIBERLINE and METALURE by the company ECKART.

  Mention may also be made of copper metal powders or alloy blends such as the references 2844 sold by the company Radium Bronze, metallic pigments such as aluminum or bronze, such as those sold under the names ROTOSAFE 700 from the company ECKART the silica-coated aluminum particles marketed under the name VISIONAIRE BRIGHT SILVER by ECKART and the metal alloy particles such as bronze powders (copper and zinc alloy) coated with silica marketed under the name of Visionaire Bright Natural Gold from Eckart.

  According to a second variant, these particles may be particles comprising a substrate and which therefore have a multilayer structure, for example a bilayer structure. This substrate may be organic or inorganic, natural or synthetic, monomaterial or multimaterial, solid or hollow. When the substrate is synthetic, it may be made with a shape that promotes the formation of a reflective surface after coating, in particular after the deposition of a layer of metal-reflecting materials. The substrate may, for example, have a planar surface and the metal-reflective material layer a substantially uniform thickness. The substrate may in particular be chosen from metals and metal derivatives as mentioned above, and also from glasses, ceramics, aluminas, silicas, silicates, and especially aluminosilicates and borosilicates, synthetic mica such as fluorophlogopite , and their mixtures, this list not being limiting. The metal-reflecting layer may coat all or part of the substrate and this layer may be at least partially covered by a layer of another material, for example a transparent material such as mentioned above. According to a particular embodiment, this metal-reflecting layer completely, directly or indirectly, that is to say with the interposition of at least one metal intermediate layer or not, the substrate. The metals or metal derivatives that can be used in the reflective layer are as defined above. For example, it may be formed of at least one metal chosen from silver, aluminum, chromium, nickel, molybdenum, gold, copper, tin, magnesium and their mixtures (alloys ). More particularly, silver, chromium, nickel, molybdenum and mixtures thereof are used. As an illustration of this second type of particles, mention may be made more particularly of: glass particles coated with a metal layer, in particular those described in documents JP-A-09188830, JP-A-10158450, JP-A-10158541, JP -A-07258460 and JP-A-05017710.

  As an illustration of these particles comprising a glass substrate, mention may be made of those coated respectively with silver, gold or titanium, in the form of platelets, sold by the company NIPPON SHEET GLASS under the names MICROGLASS METASHINE. Particles with a silver-coated glass substrate, in the form of platelets, are sold under the name MICROGLASS METASHINE REFSX 2025 PS by the company TOYAL. Particles with a glass substrate coated with a nickel / chromium / molybdenum alloy are sold under the name CRYSTAL STAR GF 550, GF 2525 by the same company. Those coated either with brown iron oxide or with titanium oxide, with tin oxide or with a mixture thereof, such as those sold under the name REFLECKS by Engelhard or those sold under the reference METASHINE ™ 2080GP by the company NIPPON SHEET GLASS. These metal-coated glass particles may be coated with silica such as those marketed under the name METASHINE series PSS1 or GPS1 by the company Nippon SHEET GLASS.

  Particles with spherical glass substrate coated or not with a metal, in particular those sold under the name PRIZMALITE MICROSPHERE by the company PRIZMALITE INDUSTRIES. Also suitable for the invention are the pigments of the METASHINE 1080R range marketed by NIPPON SHEET GLASS CO. LTD. These pigments, more particularly described in the patent application JP 2001-11340, are C-GLASS glass flakes comprising 65 to 72% SiO 2, coated with a titanium oxide layer of rutile type (TiO 2). These glass flakes have an average thickness of 1 micron and an average size of 80 microns is a ratio average size / average thickness of 80. They have blue, green, yellow or silver-tone reflections depending on the thickness of the layer of TiO2. Particles comprising a silver-coated borosilicate substrate, also called white nacres D. Particles with a metal substrate such as aluminum, copper, and bronze, in the form of platelets, are sold under the trademark STARBRITE by the company 30 SILBERLINE and under the name VISIONAIRE by the company ECKART. Particles comprising a synthetic mica substrate coated with titanium dioxide, and for example particles having a size of between 80 and 100 μm, comprising a synthetic mica substrate (fluorophlogopite) coated with titanium dioxide, representing 12% of the total weight of the particle, sold under the name PROMINENCE by the company NIHON KOKEN. The particles with a metallic sheen may also be chosen from particles formed from a stack of at least two layers with different refractive indices. These layers may be polymeric or metallic in nature and in particular include at least one polymeric layer.

  The choice of materials for constituting the different layers of the multilayer structure is of course carried out so as to impart the desired metallic effect to the particles thus formed. Such particles are especially described in WO 99/36477, US 6 299 979 and US 6 387 498 and more particularly identified hereinafter in the goniochromatic chapter.

  Diffractive elements For the purposes of the present invention, the term "diffractive pigment" denotes a pigment capable of producing a color variation according to the angle of observation when illuminated by white light, because of the presence of a diffracting structure. the light. A diffractive pigment may comprise a diffraction grating, capable for example of diffracting in defined directions an incident monochromatic light ray. The diffraction grating may comprise a periodic pattern, in particular a line, the distance between two adjacent patterns being of the same order of magnitude as the wavelength of the incident light. When the incident light is polychromatic, the diffraction grating will separate the different spectral components of the light and produce a rainbow effect. It will be useful to refer to the structure of the diffractive pigments in the article Pigments Exhibiting Diffractive Effects by Alberto Argoitia and Matt Witzman, 2002, Society of Vacuum coaters, 45th Annual Technical Conference Proceedings 2002. The diffractive pigment can be produced with patterns having different profiles, in particular triangular, symmetrical or not, in crenellations, of constant width or not, sinuosoidal The spatial frequency of the grating and the depth of the patterns will be chosen according to the degree of separation of the different desired orders. For example, between 500 and 3000 lines per mm, the particles of the diffractive pigment preferably each have a flattened shape, and in particular they are in the form of a wafer.The same pigment particle may comprise two cross-diffraction gratings, perpendicular or otherwise. possible structure for the diffractive pigment may comprise a layer of one m reflective material, covered at least on one side with a layer of a dielectric material. The latter can impart better rigidity and durability to the diffractive pigment. The dielectric material may then be chosen for example from the following materials: MgF 2, SiO 2, Al 2 O 3, AlF 3, CeF 3, LaF 3, NdF 3, SmF 2, BaF 2, CaF 2, LiF and their combinations. The reflective material may be chosen for example from metals and their alloys and also from non-metallic reflective materials. Among the metals that may be used, mention may be made of Al, Ag, Cu, Au, Pt, Sn, Ti, Pd, Ni, Co, Rd, Nb, Cr and their compounds, combinations or alloys. Such a reflective material may alone constitute the diffractive pigment which will then be monolayer. Alternatively, the diffractive pigment may comprise a multilayer structure comprising a core of a dielectric material covered with a reflective layer at least on one side, or even completely encapsulating the core. A layer of a dielectric material may also cover the reflective layer (s). The dielectric material used is then preferably inorganic, and may be chosen for example from metal fluorides, metal oxides, metal sulfides, metal nitrides, metal carbides and their combinations. The dielectric material may be in the crystalline, semicrystalline or amorphous state. The dielectric material, in this configuration, may for example be selected from the following materials: MgF 2, SiO 2, SiO 2, Al 2 O 3, TiO 2, WO, AlN, BN, B 4 C, WC, TiC, TiN, N 4 Si 3, ZnS, glass particles , diamond-like carbons and their combinations. The diffractive pigment used may in particular be chosen from those described in US patent application US 2003/0031870 published on February 13, 2003. A diffractive pigment may comprise, for example, the following structure: MgF 2 / Al / MgF 2, a diffractive pigment having this structure being marketed under the name SPECTRAFLAIR 1400 Pigment Silver by the company FLEX PRODUCTS, or SPECTRAFLAIR 1400 Pigment Silver FG. The proportion by weight of the MgF 2 can be between 80 and 95% of the total weight of the pigment.

  Goniochromatic coloring agents Within the meaning of the invention, a goniochromatic coloring agent makes it possible to observe a color change, also called color flop, depending on the angle of observation, greater than that which can be encountered with nacres. One or more goniochromatic coloring agents may be used simultaneously. The goniochromatic coloring agent may be selected to have a relatively large color change with the viewing angle. The goniochromatic coloring agent can thus be chosen so that a variation of the color AE of the cosmetic composition can be observed for a variation of the observation angle of between 0 and 80 under illumination at 45 ° C. , measured in the CIE 1976 color space, by at least 2.

  The goniochromatic coloring agent may also be chosen such that a variation of Dh of the hue angle can be observed for illumination at 45 and a variation in the angle of observation between 0 and 80. of the cosmetic composition, in the CIE 1976 plan, of at least 30 or even at least 40 or at least 60, or even at least 100. The goniochromatic coloring agent may be chosen, for example, from interferential multilayer structures and liquid crystal coloring agents.

  In the case of a multilayer structure, this may comprise for example at least two layers, each layer, independently or not of the other layer (s) being made for example from at least one material selected from the group consisting of the following materials: MgF 2, CeF 3, ZnS, ZnSe, Si, SiO 2, Ge, Te, Fe 2 O 3, Pt, Va, Al 2 O 3, MgO, Y 2 O 3, S 2 O 3, SiO, HfO 2, ZrO 2, CeO 2, Nb 2 O 5, Ta 2 O 5, TiO 2, Ag, Al, Au, Cu, Rb, Ti, Ta, W, Zn, MoS 2, cryolite, alloys, polymers and their combinations.

  The multilayer structure may or may not have, with respect to a central layer, a symmetry at the chemical nature of the stacked layers. Examples of symmetrical interferential multilayer structures that can be used in compositions produced in accordance with the invention are, for example, the following structures: Al / SiO 2 / Al / SiO 2 / Al, pigments having this structure being marketed by DuPont de Nemours; Cr / MgF 2 / Al / MgF 2 / Cr, pigments having this structure being marketed under the name CHROMAFLAIR by the company FLEX; MoS2 / SiO2 / Al / SiO2 / MoS2; Fe2O3 / Si02 / Al / Si02 / Fe2O3, and Fe2O3 / Si02 / Fe2O3 / Si02 / Fe2O3, pigments having these structures being marketed under the name SICOPEARL by BASF; MoS2 / SiO2 / mica-oxide / SiO2 / MoS2; Fe2O3 / SiO2 / mica-oxide / SiO2 / Fe2O3; TiO2 / SiO2 / TiO2 and TiO2 / Al2O3 / TiO2; SnO / TiO 2 / SiO 2 / TiO 2 / SnO; Fe2O3 / SiO2 / Fe2O3; SnO / mica / TiO 2 / SiO 2 / TiO 2 / mica / SnO, pigments having these structures being sold under the name XIRONA by the company Merck (Darmstadt). By way of example, these pigments may be the pigments of silica / titania / tin oxide structure sold under the name Xirona Magic by the company Merck, the silica / brown iron oxide structural pigments marketed under the name XIRONA. INDIAN SUMMER by the company MERCK and the silica / titanium oxide / mica / tin oxide structural pigments marketed under the name XIRONA CARRIBEAN BLUE by the company MERCK. Mention may also be made of the INFINITE COLORS pigments from SHISEIDO. Depending on the thickness and nature of the different layers, different effects are obtained. Thus, with the Fe.sub.2 O.sub.3 / SiO.sub.2 / Al.sub.2 / SiO.sub.2 / Fe.sub.2 O.sub.3 structure, grey-green to gray-red is passed for SiO.sub.2 layers of 320 to 350 nm; from red to golden for layers of SiO2 from 380 to 400 nm; from violet to green for SiO2 layers from 410 to 420 nm; from copper to red for SiO2 layers from 430 to 440 nm. It is also possible to use goniochromatic coloring agents with a multilayer structure comprising alternating polymeric layers.

  As an illustration of the materials that may constitute the different layers of the multilayer structure, mention may be made of this list not being limiting: polyethylene naphthalate (PEN) and its isomers, for example 2,6-, 1,4-, 1 , 5-, 2,7- and 2,3-PEN, polyalkylene terephthalates, polyimides, polyetherimides, atactic polystyrenes, polycarbonates, polymethacrylates and alkyl polyacrylates, syndiotactic polystyrene (sPS), syndiotactic poly-alpha-methylstyrene, syndiotactic polydichlorostyrene, copolymers and mixtures of polystyrenes, cellulose derivatives, polyalkylene polymers, fluorinated polymers, chlorinated polymers, polysulfones, polyethersulfones, polyacrylonitriles, polyamides, silicone resins epoxy resins, polyvinyl acetate, polyether amides, ionomeric resins, elastomers and polyurethanes. Also suitable are copolymers, for example copolymers of PEN (for example, 2,6-, 1,4-, 1,5-, 2,7-, and / or 2,3-naphthalene dicarboxylic acid copolymers or its esters with (a) terephthalic acid or its esters, (b) isophthalic acid or its esters, (c) phthalic acid or its esters, (d) alkane glycols, (e) cycloalkane glycols (for example cyclohexane dimethanol diol); (f) alkane dicarboxylic acids, and / or (g) cycloalkane dicarboxylic acids, polyalkylene terephthalate copolymers and styrene copolymers In addition, each individual layer may include mixtures of two or more previous polymers or copolymers. The choice of materials for constituting the different layers of the multilayer structure is of course carried out in such a way as to confer the desired optical effect on the particles thus formed: by way of example, pigments with a polymeric multilayer structure may be mentioned those marketed by 3M under the name COLOR GLITTER.

  The liquid crystal coloring agents comprise, for example, silicones or cellulose ethers onto which mesomorphic groups are grafted. As liquid crystal goniochromatic particles, it is possible to use, for example, those sold by the company Chenix as well as those marketed under the name Helicone HC by the company Wacker. These agents may also be in the form of dispersed goniochromatic fibers. Such fibers may for example have a size of between 50 μm and 700 μm, for example about 300 μm.

  In particular, interferential fibers with a multilayer structure can be used. Fibers with a multilayer structure of polymers are described in particular in documents EP-A-921217, EP-A-686858 and US-A-5472798. The multilayer structure may comprise at least two layers, each layer, independently or not of the other layer (s), being made of at least one synthetic polymer. The polymers present in the fibers may have a refractive index ranging from 1.30 to 1.82 and more preferably from 1.35 to 1.75. Preferred polymers for forming the fibers are polyesters such as polyethylene terephthalate, polyethylene naphthalate, polycarbonate; acrylic polymers such as polymethylmethacrylate; polyamides.

  Goniochromatic fibers with a polyethylene terephthalate / nylon-6 bilayer structure are marketed by TEIJIN under the name MORPHOTEX. In a variant, this goniochromatic coloring agent may be associated with at least one diffractive pigment. The combination of these two materials results in a composition or film that exhibits increased color variability, which is likely to allow an observer to perceive a color change, or even a color movement, under many conditions. observation and illumination. The weight ratio of the diffractive pigment to the goniochromatic coloring agent is preferably between 85/15 and 15/85, more preferably between 80/20 and 20/80, more preferably 60/40 and 40/60, for example of the order of 50/50. Such a ratio is favorable to obtaining a sustained rainbow effect and goniochromatic effect.

  Optical brighteners Optical brighteners are compounds well known to those skilled in the art. Such compounds are especially described in Fluorescent Whitening Agent, Encyclopedia of Chemical Technology, Kirk-Othmer, vol 11, p. 227-241, 4th edition, 1994, Wiley. They can more particularly be defined as compounds which absorb essentially in the UVA between 300 and 390 nm and re-emit essentially between 400 and 525 nm.

  Among the optical brighteners, mention may be made more particularly of stilbene derivatives, in particular polystyrylstilbenes and triazinstilbenes, coumarin derivatives, in particular hydroxycoumarines and aminocoumarines, oxazole, benzoxazole, imidazole, triazole and pyrazoline derivatives, and derivatives thereof. pyrene and porphyrin derivatives and mixtures thereof.

  Such compounds are readily available commercially. There may be mentioned for example: the stilbene derivative of naphtho-triazole sold under the trade name Tinopal GS, di-styryl-4,4 'biphenyl di-sodium sulfonate (CTFA name: disodium distyrylbiphenyl disulfonate) sold under the trade name Tinopal CBS -X, the cationic derivative of aminocoumarin sold under the trade name Tinopal SWN CONC. sodium 4,4'-bis [(4,6-dianilino-1,3,5-triazin-2-yl) amino] stilbene-2,2'disulphonate sold under the trade name Tinopal SOP, 4, 4'-bis [(4-anilino-6-bis (2-hydroxyethyl) amino-1,3,5-triazin-2-yl) amino] stilbene-2,2'-disulfonic acid sold under the trade name Tinopal UNPA-GX, 4,4'-bis [anilino-6-morpholine-1,3,5-triazin-2-yl) amino] stilbene sold under the trade name Tinopal AMS-GX, 4,4'- bis - [(4-anilino-6- (2-hydroxyethyl) methylamino-1,3,5-triazin-2-yl) amino] stilbene-2,2'-disodium sulfonate sold under the trade name Tinopal 5BM-GX all by the company CIBA Specialty Chemicals, 2,5 thiophene di-ylbis (5-tert-butyl-1,3-benzoxazole) sold under the trade name Uvitex OB by the company CIBA, the anionic derivative of di-aminostilbene in dispersion in water sold under the trade name Leucophor BSB liquid by the company CLARIANT, brighteners optical brightener sold under the trade name COVAZUR by the company WACKHERR. Optical brighteners that may be used in the present invention may also be in the form of copolymers, for example acrylates and / or methacrylates, grafted with optical brightening groups as described in application FR 99 10942. They may be used as they are or introduced into the film in the form of particles and / or fibers covered with said brightener, such as those described below. In particular, it is possible to use the fibers coated with optical brighteners as marketed by LCW under the trade reference Fiberlon 54 ZO3, having a length of approximately 0.4 mm and a titer of 0.5 denier.

  As regards the fibers that may be used according to the invention, they may be fibers of synthetic or natural, mineral or organic origin. By fiber, it is necessary to understand an object of length L and of diameter D such that L is much greater than D, D being the diameter of the circle in which the section of the fiber is inscribed. In particular, the L / D ratio (or form factor) is chosen in the range from 3.5 to 2500, preferably from 5 to 500, and more preferably from 5 to 150. It may especially be used fibers. in the manufacture of textiles, and in particular of silk, cotton, wool, flax, cellulose fibers, in particular extracted from wood, vegetables or seaweed, rayon, polyamide (nylon), viscose, acetate, especially of rayon acetate, of poly- (p-phenylene terephthalamide) (or of aramid), in particular of Kevlar, of acrylic polymer, in particular of polymethyl methacrylate or of poly-2-hydroxyethyl methacrylate, of polyolefin and in particular of polyethylene or polypropylene, glass, silica, carbon in particular in graphite form, polytetrafluoroethylene (such as Teflon), insoluble collagen, polyesters, polyvinyl chloride or vinylidene, polyvinyl alcohol, polyacrylonitrile, chitosan, polyurethane, p polyethylene phthalate, fibers formed from a mixture of polymers such as those mentioned above, such as polyamide / polyester fibers.

  The first composition, the second and / or third compositions may also contain one or more formulation additives commonly used in cosmetics and more particularly in the cosmetics and / or nail care sector. They may especially be chosen from perfumes, vitamins, trace elements, softeners, sequestering agents, alkalinizing or acidifying agents, wetting agents, thickening agents, dispersing agents, antifoam agents, spreading, co-resins, preservatives, UV filters, actives, moisturizing agents, neutralizers, stabilizers, antioxidants and mixtures thereof. Thus, it may in particular incorporate, as active agents, curing agents or hardeners for keratin materials, active agents promoting nail growth such as methylsulfonylmethane and / or active agents for treating various conditions localized at the level of the nail, such as onichomycosis.

  The amounts of these various ingredients are those conventionally used in this field and for example from 0.01 to 20% by weight, and especially from 0.01 to 10% by weight relative to the total weight of each composition.

  The following example illustrates in a nonlimiting manner the invention. Example 1 Nail Makeup Kit 1) First Composition 10.27 Nitrocellulose 30% Isopropyl Alcohol (Viscosity: E22 - 1/2 S) 2.83 Nitrocellulose 30% Isopropyl Alcohol (Azur E80 Bergerac) 15.16 Glycerophthalic alkyd esterified with branched fatty acids (') in 1.67 ethyl acetate 70% acetyl tributyl citrate 4.76 N-ethyl O, P-toluenesulfonamide 2-octyl-2-cyanoacrylate stabilized with 1% phosphoric acid (RITE 5 LOK CON895, marketed by CHEMENCE) 3.32 Isopropyl alcohol Ethyl acetate 24.25 Butyl acetate Qsp 100 (1) sold by SHELL under the trade name CARDURA 30 . 2) Second composition 12,86 Nitrocellulose 30% isopropyl alcohol (viscosity: E22 - 1/2 S) 1.51 Nitrocellulose 30% isopropyl alcohol (Azur E80 Bergerac) 16.08 Glycerophthalic alkyd ester esterified by branched fatty acids (') in 3.25 ethyl acetate 70% Acetyl tributyl citrate 3.57 N-ethyl O, P-toluenesulfonamide 1.29 Hectorite modified stearyl benzyl dimethyl ammonium 0.015 Lacquer Yellow 5 0.90 Lacquer Red 7 Lacquer Red 34 0.10 Isopropyl alcohol 3.66 Citric acid, 1 H2O 0.05 Ethyl acetate 23 Butyl acetate Qsp 100 (1) marketed by SHELL under the brand name CARDURA 30. A layer of the first composition is applied to the nails, it is allowed to dry for a few seconds, then a layer of second composition is applied to said layer.

A colored film is obtained on the nails which has a very good behavior over time.

Claims (4)

  A method of makeup and / or nail care comprising: a) applying to the nail at least one layer of a first, surface-treated, non-surface-treated metal oxide-based pigment composition comprising at least one cyanoacrylate monomer; of formula (I) CN H 2 COO-R (I) in which R represents an alkyl or alkoxyalkyl radical, b) then to apply on said layer at least one layer of a second composition comprising at least one film-forming polymer.   2. A method of making up and / or care of the nails comprising the following steps: a) preparing an extemporaneous mixture of: at least one first composition comprising at least one cyanoacrylate monomer of formula (I) CN H 2 C C COO-R (I) in which R represents an alkyl or alkoxyalkyl radical, and - at least one second composition comprising at least one film-forming polymer, then b) applying at least one layer of said mixture to the nail.   3. Method according to claim 1 or 2, characterized in that the cyanoacrylate monomer or monomers of formula (I) are chosen from those whose radical R comprises from 1 to 10 carbon atoms.   4. Process according to one of the preceding claims, characterized in that the cyanoacrylate monomer or monomers of formula (I) are chosen from those comprising alkyl or alkoxyalkyl R radicals comprising from 6 to 10 carbon atoms. Process according to one of the preceding claims, characterized in that the cyanoacrylate monomer or monomers are chosen from (C 6 -C 10) alkylcyanoacrylates. 6. Method according to one of the preceding claims, characterized in that the cyanoacrylate monomer or monomers are chosen from the following monomers: C = N CH 2 = C COO-R '3 in which: R' 3 is chosen from = - (CH 2) 7 -CH 3, -CH (CH 3) - (CH 2) 5 -CH 3, -CH 2 -CH (C 2 H 5) - (CH 2) 3 -CH 3, - (CH 2) 5 -CH (CH 3) -CH 3, - (CH2) 4-CH (C2H5) -CH3, and mixtures thereof 7. Process according to any one of the preceding claims, characterized in that the cyanoacrylate monomer is n-octyl 2-cyanoacrylate. 8. A method of making up and / or care of the nails comprising: a) applying to the nail at least one layer of a first composition comprising at least one n-octyl 2-cyanoacrylate monomer, b) and then to be applied to said layer at least one layer of a second composition. 9. Process according to any one of the preceding claims, characterized in that the amount of cyanoacrylate monomer ranges from 0.1 to 100% by weight of the total weight of the first composition, more preferably from 1 to 50%, preferably from 2 to 30% and more preferably 5 to 20% by weight. 10. Process according to any one of the preceding claims, characterized in that the first and / or the second composition comprises an organic solvent phase. 11. Process according to the preceding claim, characterized in that the solvent phase comprises at least one organic solvent chosen from: short-chain esters (having from 3 to 8 carbon atoms in total), such as sodium acetate; ethyl, methyl acetate, propyl acetate, n-butyl acetate, isopentyl acetate; ketones which are liquid at ambient temperature, such as methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, isophorone, cyclohexanone, acetone; alcohols liquid at room temperature, such as ethanol, isopropanol, diacetone alcohol, 2-butoxyethanol, cyclohexanol; glycols that are liquid at room temperature, such as ethylene glycol, propylene glycol, pentylene glycol, glycerol; propylene glycol ethers which are liquid at ambient temperature, such as propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate or dipropylene glycol mono-butyl ether; aldehydes which are liquid at ambient temperature, such as benzaldehyde or acetaldehyde; carbonates such as propylene carbonate and dimethyl carbonate; acetals such as methylal; and - their mixtures. 12. The process according to claim 10 or 11, characterized in that the organic solvent phase represents from 5 to 95% of the total weight of each of the first or second composition, preferably from 10% to 85% by weight. 13. Process according to one of the preceding claims, characterized in that the first and second compositions are anhydrous. 14. Process according to any one of Claims 1 to 12, characterized in that the second composition comprises an aqueous phase. 15. Process according to claim 14, characterized in that the aqueous phase represents from 5 to 95% by weight relative to the total weight of the second composition, preferably from 10% to 85% by weight. 16. Process according to one of the preceding claims, characterized in that the first composition comprises at least one film-forming polymer. 1517. Process according to claim 1 or 16, characterized in that the film-forming polymer is present in a solids content ranging from 0.1% to 60% by weight, relative to the total weight of the first and / or composition, preferably from 2% to 40% by weight, and more preferably from 5% to 25% by weight. 18. The method of claim 16 or 17, characterized in that said film-forming polymer is chosen from homo- and co-polymers esters and / or amides of (meth) acrylic acids, homopolymers and co-polymers esters or vinyl amides. celluloses and cellulose derivatives, polyurethanes, acrylic polyurethanes, polyureas, polyurea polyurethanes, polyester polyurethanes, polyether polyurethanes, polyesters, polyesteramides, fatty-chain polyesters, epoxys, and the arylsulfonamide condensates. 19. Method according to one of the preceding claims, characterized in that the second composition comprises an aqueous dispersion of particles of film-forming polymer (s). 20. Process according to claim 19, characterized in that the said polymer is chosen from polycondensates, anionic, cationic, nonionic or amphoteric polyurethanes, polyurethane-acrylics, polyurethanespolyvinylpyrrolidones, polyester-polyurethanes, polyether polyurethanes, polyureas, polyurea polyurethanes, polyesters, polyester amides, fatty-chain polyesters, polyamides and epoxy ester resins, acrylic and / or vinyl polymers or copolymers, acrylic / silicone or nitrocellulose / acrylic copolymers, polymers resulting from the radical polymerization of one or more radical monomers inside and / or partially at the surface of pre-existing particles of at least one polymer selected from the group consisting of polyurethanes, polyureas, polyesters and polyesteramides and / or the alkyds. 21. Method according to one of the preceding claims, characterized in that the first and / or the second composition comprises at least one formulation additive especially chosen from co-resins, plasticizers, coalescing agents and agents. spreading. 22. Method according to any one of claims 2 to 21, characterized in that the composition comprises at least one dyestuff. Method according to one of Claims 2 to 22, characterized in that the first composition is free of surface-treated metal oxide-based pigment. 24. Method according to any one of the preceding claims, characterized in that the second composition comprises at least one dyestuff. 25. The method as claimed in one of claims 20 to 24, characterized in that the dyestuff is present in a content ranging from 0.01% to 50% by weight, preferably from 0.01% to 30% by weight. each first and / or second composition. 26. Method according to one of the preceding claims, characterized in that it comprises a further step of applying at least one layer of a third liquid composition comprising a film-forming polymer and an organic or aqueous solvent medium to the one or more layers of second composition. 27. A make-up or nail care kit comprising: i) a first composition comprising at least one cyanoacrylate monomer of formula (I) CN H 2 COO-R (I) in which R represents an alkyl or alkoxyalkyl radical, and ii) a second composition comprising at least one film-forming polymer. 28. Makeup or nail care kit according to claim 27, characterized in that the first and second compositions are in separate packages. 25 30