WO2024126522A1

WO2024126522A1 - Process for treating keratin materials using a compound derived from the condensation of poly(thi)ol and of acetoacetate and a crosslinking agent

Info

Publication number: WO2024126522A1
Application number: PCT/EP2023/085436
Authority: WO
Inventors: Boris STEVANT; Laurent SABATIE; Etienne SAVONNET
Original assignee: LOreal SA
Current assignee: LOreal SA
Priority date: 2022-12-13
Filing date: 2023-12-12
Publication date: 2024-06-20
Anticipated expiration: 2025-06-13
Also published as: KR20250099163A; CN121152614A; JP2025539471A; FR3142893A1; EP4633593A1

Abstract

The present invention relates more particularly to the cosmetic field of keratin materials, and notably to that of caring for and/or making up the skin and/or lips and/or eyelashes and/or eyebrows. The invention is thus directed toward proposing a process using on keratin materials in one or more steps i) at least one compound of formula (I) derived from the condensation of poly(thi)ol and acetoacetate (ACAC) and ii) at least one crosslinking agent. The invention also relates to a composition comprising ingredients i) and ii), and also to a kit comprising i) and ii).

Description

Title: Process for treating keratin materials using a compound derived from the condensation of poly(thi)ol and of acetoacetate and a crosslinking agent

[0001] The present invention relates more particularly to the cosmetic field of keratin materials, and notably to that of caring for and/or making up the skin and/or lips and/or eyelashes and/or eyebrows. The invention is thus directed toward proposing a process using on keratin materials in one or more steps i) at least one compound of formula (I) derived from the condensation of poly(thi)ol and acetoacetate (ACAC) and ii) at least one crosslinking agent. The invention also relates to compositions comprising ingredients i) and ii), and also to a kit comprising i) and ii).

[0002] Cosmetic products conventionally require the use of one or more film-forming polymers in order to obtain a quality deposit of these products on keratin materials, and in particular to satisfy the expectations detailed below.

[0003] Thus, in the field of skin and lip makeup, it is most particularly expected that the deposit formed does not transfer on contact with the fingers or clothing.

[0004] It must also have good resistance to contact with water, notably rain or during showering or even perspiration, and also resistance to sebum, or even to contact with edible fats, notably edible oils when this deposit is formed on the lips. Moreover, this deposit must be comfortable or even glossy.

[0005] For this purpose, dispersions of polymer particles of nanometric size are used in makeup products such as mascaras, eyeliners, eyeshadows or lipsticks, and more particularly in their organic and notably oily phases, as film-forming agent. Thus, EP 749 747 proposes to use, in hydrocarbon-based oils, dispersions of acrylic polymers stabilized with polystyrene/copoly(ethylene-propylene) diblock copolymers. FR 1 362 795 describes, for its part, the use of dispersions of surface-stabilized polymer particles in hydrocarbon-based oils. WO 2010/046 229 proposes, for its part, dispersions in isododecane of acrylic polymers stabilized with stabilizing polymers.

[0006] Moreover, US 2006/0079599 describes a polymer-based tissue adhesive for medical use, including polyvinyl alcohol polymers bearing ACAC groups combined with polyamines in the form of a hydrogel. Said document does not describe the use of poly(thi)ol ACAC combined with crosslinking agents and optionally cosmetic active agents for application to keratin materials to produce a non-tacky, relatively transferresistant, glossy, comfortable and long-lasting deposit on said keratin materials.

[0007] There is still a need for cosmetic compositions intended for application to the skin and/or lips and/or eyelashes and/or eyebrows which make it possible to obtain a non-tacky, relatively or even totally transfer-resistant, glossy, comfortable and long- lasting deposit.

[0008] There is also a need for compositions which are resistant to water and to fatty substances, in particular to sebum.

[0009] There also remains a need for compositions that afford sheen and transparency qualities.

[0010] The present invention is specifically directed toward meeting all or some of these needs.

[0011] These problems are solved by performing a process for treating keratin materials, by applying to said materials: i) at least one compound of formula (I) resulting from the condensation of poly(thi)ol and of acetoacetate (ACAC), and also the optical or geometrical isomers thereof, the salts thereof, and the solvates thereof such as hydrates:

[Chem. 1]:

in which formula (I):

R¹ represents a linear or branched, saturated or unsaturated, conjugated or nonconjugated, acyclic or cyclic, aromatic or non-aromatic C2 to C14, in particular C3 to C12, polyvalent hydrocarbon-based radical,

R¹ also being: a) optionally substituted with one or more hydroxyl OH or amine -N(R)2 groups with R representing a (Ci-C4)alkyl group such as methyl, carboxyl -C(O)-OH, a vinyl group, and/or b) optionally interrupted with one or more heteroatoms or groups chosen from O, S, carbonyl -C(O)-, amine -N(R’), or combinations thereof such as ester -C(O)-O-, -O- C(O)-, amide -C(O)-N(R’)-, -N(R’)-C(O)-, urethane -N(R’)-C(O)-O- or -O-C(O)- N(R’)-, urea -N(R’)-(CO)-N(R’)-, or carbonate -O-C(O)-O-, in which R’ represents a hydrogen atom, an alkyl group containing from 1 to 4 carbon atoms optionally substituted with at least one hydroxyl group (OH), or optionally substituted with -X- C(O)-C(R_a)(Rb)-C(O)-R²; preferably, R’ represents a hydrogen atom or a (Ci- C^alkyl group;

R² represents a linear or branched, saturated or unsaturated Ci to Ce monovalent hydrocarbon-based radical, preferably a (Ci-C4)alkyl group such as methyl or tertbutyl, more preferentially methyl;

R^a and R^b, which may be identical or different, represent a hydrogen atom or a (C C4)alkyl group, preferably hydrogen;

- X is a heteroatom or group chosen from O, S, N(R’) or -S-CH2-C(O)-O-, -O-C(O)- CH₂-S-, -O-C(O)-N(R’)-, -N(R’)-C(O)-O- or -N(R’)-C(O)-N(R’)-; preferably, X represents O; n denotes an integer ranging from 2 to 10, particularly ranging from 3 to 8; and ii) at least one crosslinking agent; and iii) optionally at least one cosmetic active agent.

[0012] The inventors have thus found, surprisingly, that the application of ingredients i), ii) and optionally iii) to keratin materials affords resistance to the keratin materials treated with this combination, notably with respect to liquid fatty substances such as oils and water.

[0013] For the purposes of the present invention and unless otherwise indicated:

The term “cosmetic active agent’ means an organic or organosilicon compound or a mineral compound which can be incorporated into a cosmetic composition to give an effect on keratin materials, whether this effect is immediate or provided by repeated applications. As examples of cosmetic active agents, mention may be made of colored or uncolored, fluorescent or non-fluorescent compounds such as optical brighteners, or UVA and/or UVB screening agents, antiaging active agents or active agents intended for providing a benefit to the skin such as active agents having action on the barrier function, deodorant active agents, antiperspirant active agents, desquamating active agents, antioxidant active agents, moisturizing active agents, sebum-regulating active agents, active agents intended for combating the effects of pollution, antimicrobial or bactericidal active agents, fragrances and dyestuffs such as direct dyes or pigments, preferably pigments.

Preferentially, the cosmetic active agents are chosen from a) dyestuffs chosen from pigments, direct dyes, and mixtures thereof, b) active agents for caring for keratin materials, preferably the skin, c) UV-screening agents, and d) mixtures thereof. For the purposes of the present invention, the term “fatty substance" means an organic compound that is insoluble in water at ordinary temperature (25°C) and at atmospheric pressure (760 mmHg) (solubility of less than 5%, preferably less than 1% and even more preferentially less than 0.1 %); in addition, the fatty substances are soluble in organic solvents under the same temperature and pressure conditions, for instance in halogenated solvents such as chloroform or dichloromethane, lower alcohols such as ethanol or aromatic solvents such as benzene or toluene.

- The term “(hetero)aryf’ means aryl or heteroaryl groups.

- The term “(hetero)cycloalkyl" means cycloalkyl or heterocycloalkyl groups.

The “aryk or “heteroaryk radicals or the aryl or heteroaryl part of a radical may be substituted with at least one substituent borne by a carbon atom, chosen from:

. a Ci-Ce and preferably C1-C4 (poly) (hydroxy) alkyl radical;

. a halogen atom such as chlorine, fluorine or bromine;

. a hydroxyl group;

. a C1-C2 alkoxy radical; a C2-C4 (poly)hydroxyalkoxy radical;

. an amino radical;

. an amino radical substituted with one or two identical or different Ci-Ce and preferably C1-C4 alkyl radicals;

. an acylamino radical (-NR-COR’) in which the radical R is a hydrogen atom;

. a C1-C4 alkyl radical and the radical R’ is a C1-C4 alkyl radical; a carbamoyl radical ((R)2N-CO-) in which the radicals R, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical;

. an alkylsulfonylamino radical (R’SC>2-NR-) in which the radical R represents a hydrogen atom or a C1-C4 alkyl radical and the radical R’ represents a C1-C4 alkyl radical, or a phenyl radical;

. an aminosulfonyl radical ((R)2N-SO2-) in which the radicals R, which may be identical or different, represent a hydrogen atom or a C1-C4 alkyl radical;

. a carboxylic radical in acid form or salified (preferably with an alkali metal or a substituted or unsubstituted ammonium) form;

. a cyano group (CN);

. a polyhalo(Ci-C4)alkyl group, preferentially trifluoromethyl (CF₃); the cyclic or heterocyclic part of a non-aromatic radical may be substituted with at least one substituent borne by a carbon atom, chosen from the groups: hydroxyl,

C1-C4 alkoxy, C2-C4 (poly)hydroxyalkoxy; . alkylcarbonylamino (R-CO-NR’-), in which the radical R’ is a hydrogen atom or a C1-C4 alkyl radical and the radical R is a C1-C2 alkyl radical, amino substituted with one or two identical or different C1-C4 alkyl groups;

. alkylcarbonyloxy (R-CO-O-), in which the radical R is a C1-C4 alkyl radical, amino substituted with one or two identical or different C1-C4 alkyl groups;

. alkoxycarbonyl (RO-CO-) in which the radical R is a C1-C4 alkyl radical, amino substituted with one or two identical or different C1-C4 alkyl groups; a cyclic or heterocyclic radical, or a non-aromatic part of an aryl or heteroaryl radical, may also be substituted with one or more oxo groups; a hydrocarbon-based chain is unsaturated when it includes one or more double bonds and/or one or more triple bonds; an “aryk radical represents a monocyclic or fused or non-fused polycyclic hydrocarbonbased group comprising from 6 to 14 carbon atoms, and at least one ring of which is aromatic; preferentially, the aryl radical is a phenyl, biphenyl, naphthyl, indenyl, anthracenyl or tetrahydronaphthyl. a “heteroaryl” radical represents a monocyclic or fused or non-fused polycyclic, 5- to 14-membered group, comprising from 1 to 6 heteroatoms chosen from nitrogen, oxygen, sulfur and selenium atoms, and at least one ring of which is aromatic; preferentially, a heteroaryl radical is chosen from acridinyl, benzimidazolyl, benzobistriazolyl, benzopyrazolyl, benzopyridazinyl, benzoquinolyl, benzothiazolyl, benzotriazolyl, benzoxazolyl, pyridyl, tetrazolyl, dihydrothiazolyl, imidazopyridyl, imidazolyl, indolyl, isoquinolyl, naphthoimidazolyl, naphthooxazolyl, naphthopyrazolyl, oxadiazolyl, oxazolyl, oxazolopyridyl, phenazinyl, phenoxazolyl, pyrazinyl, pyrazolyl, pyrilyl, pyrazoyltriazyl, pyridyl, pyridinoimidazolyl, pyrrolyl, quinolyl, tetrazolyl, thiadiazolyl, thiazolyl, thiazolopyridyl, thiazoylimidazolyl, thiopyrylyl, triazolyl and xanthylyl; a “cyclic” or “cycloalkyl" radical is a monocyclic or fused or non-fused polycyclic, non- aromatic cyclic hydrocarbon-based radical containing from 5 to 14 carbon atoms, which may include one or more unsaturations; the cycloalkyl is preferably a cyclohexyl group; a “heterocyclic” or “heterocycloalkyl" radical is a monocyclic or fused or non-fused polycyclic 3- to 9-membered non-aromatic cyclic radical, including from 1 to 4 heteroatoms chosen from nitrogen, oxygen, sulfur and selenium atoms; preferably, the heterocycloalkyl is chosen from epoxide, piperazinyl, piperidyl, morpholinyl and dithiolane; an “alkyl" radical is a linear or branched, in particular Ci-Ce and preferably C1-C4 saturated hydrocarbon-based radical; an “alkoxy" radical is an alkyl-oxy radical for which the alkyl radical is a linear or branched Ci-Ce and preferentially C1-C4 hydrocarbon-based radical; a “(poly)(hydroxy)alkyl” radical denotes a Ci-Ce and preferably C1-C4 alkyl radical optionally substituted with one or more hydroxyl radicals, preferably substituted with from 1 to 4 hydroxyl groups, more particularly between 1 and 3; a “sugar¹’ radical is a monosaccharide or disaccharide radical. Sugar radicals that may be mentioned include: sucrose, glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose; the term “monosaccharide" refers to a mono-oside sugar comprising at least 5 carbon atoms of formula C_X(H2O)_X with x an integer greater than or equal to 5, preferably x is greater than or equal to 6, in particular x is between 5 and 7 inclusive, preferably x = 6; they may be of D or L configuration, and of alpha or beta anomer, and also the salts thereof and the solvates thereof such as hydrates; the term “disaccharide" refers to a di-oside sugar which is a compound constituted of two saccharides bonded together via O-oside bonds, said compounds being constituted of two monosaccharide units (also known as mono-osides) as defined previously, said monosaccharide units comprising at least 5 carbon atoms, preferably 6; in particular, the mono-oside units are linked together via a 1 ,4 or 1 ,6 bond as a (alpha) or p (beta) anomer, it being possible for each oside unit to be of L or D configuration, and also the salts thereof and the solvates thereof such as the hydrates of said monosaccharides; more particularly, they are polymers formed from two saccharides (or monosaccharides) having the general formula: -[C_x(H2O)_y)]2- or -[(CH2O)_X]2-, with x being an integer greater than or equal to 5, preferably x is greater than or equal to 6, in particular x is between 5 and 7 inclusive, preferably x = 6, and y is an integer representing x - 1 ; the term “polysaccharide" refers to a poly-oside sugar which is a polymer constituted of several saccharides bonded together via O-oside bonds, said polymers being constituted of monosaccharide units (also known as mono-osides) as defined previously, said monosaccharide units comprising at least 5 carbon atoms, preferably 6; in particular, the mono-oside units are linked together via a 1 ,4 or 1 ,6 bond as a (alpha) or (beta) anomer, it being possible for each oside unit to be of L or D configuration, and also the salts thereof and the solvates thereof such as the hydrates of said monosaccharides; more particularly, they are polymers formed from a certain number of saccharides (or monosaccharides) having the general formula: -[C_x(H2O)_y)]_w- or -[(CH₂O)_X]_W-, where x is an integer greater than or equal to 5, preferably x is greater than or equal to 6, in particular x is between 5 and 7 inclusive and preferably x = 6, and y is an integer which represents x - 1 , and w is an integer greater than or equal to 2, particularly between 3 and 3000 inclusive, more particularly between 5 and 2500, preferentially between 10 and 2300, particularly between 15 and 1000 inclusive, more particularly between 20 and 500, preferentially between 25 and 200; the term “organic or mineral acid salt’ more particularly means a) addition salts with an organic or mineral acid in particular chosen from a salt derived from i) hydrochloric acid HCI, ii) hydrobromic acid HBr, iii) sulfuric acid H2SO4, iv) alkylsulfonic acids: Alk- S(O)2OH such as methanesulfonic acid and ethanesulfonic acid; v) arylsulfonic acids: Ar-S(O)2OH such as benzenesulfonic acid and toluenesulfonic acid; vi) alkoxysulfinic acids: Alk-O-S(O)OH such as methoxysulfinic acid and ethoxysulfinic acid; vii) aryloxysulfinic acids such as tolueneoxysulfinic acid and phenoxysulfinic acid; viii) phosphoric acid H3PO4; ix) triflic acid CF3SO3H and x) tetrafluoroboric acid HBF4; xi) organic carboxylic acids R°-C(O)-OH (I’z), in which formula (I’z) R° represents a (hetero)aryl group such as phenyl, (hetero)aryl(Ci-C4)alkyl group such as benzyl, or (Ci-Cw)alkyl , said alkyl group being optionally substituted preferably with one or more hydroxyl groups or amino or carboxyl radicals, R° preferably denoting a (Ci-Ce)alkyl group optionally substituted with 1 , 2 or 3 hydroxyl or carboxyl groups; more preferentially, the monocarboxylic acids of formula (I’z) are chosen from acetic acid, glycolic acid, lactic acid, and mixtures thereof, and more particularly from acetic acid and lactic acid; and the polycarboxylic acids are chosen from tartaric acid, succinic acid, fumaric acid, citric acid and mixtures thereof; and xii) amino acids including more carboxylic acid radicals than amino groups, such as y-carboxyglutamic acid, aspartic acid or glutamic acid, in particular y-carboxyglutamic acid; or b) addition salts with an organic or mineral base such as alkali metal or alkaline-earth metal hydroxides, alkali metal or alkaline-earth metal carbonates, alkali metal or alkaline-earth metal bicarbonates, addition salts with basic amino acids such as arginine or lysine, addition salts with optionally hydroxylated amines; an “anionic counterion" is an anion or an anionic group associated with the cationic charge; more particularly, the anionic counterion is chosen from: i) halides such as chloride or bromide; ii) nitrates; iii) sulfonates, including Ci-Ce alkylsulfonates: Alk- S(O)2O' such as methanesulfonate or mesylate and ethanesulfonate; iv) arylsulfonates: Ar-S(O)2O^_ such as benzenesulfonate and toluenesulfonate or tosylate; v) citrate; vi) succinate; vii) tartrate; viii) lactate; ix) alkyl sulfates: Alk-0-S(0)O such as methyl sulfate and ethyl sulfate; x) aryl sulfates: Ar-0-S(0)O such as benzene sulfate and toluene sulfate; xi) alkoxy sulfates: Alk-O-S(O)2O^_ such as methoxy sulfate and ethoxy sulfate; xii) aryloxy sulfates: Ar-O-S(O)2O^_; xiii) phosphate; xiv) acetate; xv) triflate; and xvi) borates such as tetrafluoroborate; the “solvates” represent hydrates and also the combination with linear or branched Ci- 04 alcohols such as ethanol, isopropanol or n-propanol; the term “chromophore” means a radical derived from a colorless or colored compound that is capable of absorbing in the UV and/or visible radiation range at a wavelength Xabs of between 250 and 800 nm. Preferably, the chromophore is colored, i.e. it absorbs wavelengths in the visible range, i.e. preferably between 400 and 800 nm. Preferably, the chromophores appear colored to the eye, particularly between 400 and 700 nm (Ullmann’s Encyclopedia, 2005, Wiley-VcH, Verlag “Dyes, General Survey”, § 2.1 Basic Principle of Color);

- the term “UV-A screening agent’ means a chromophore derived from a compound which screens out (or absorbs) UV-A ultraviolet rays at a wavelength of between 320 and 400 nm. A distinction may be made between short UV-A screening agents (which absorb rays at a wavelength of between 320 and 340 nm) and long UV-A screening agents (which absorb rays at a wavelength of between 340 and 400 nm). the term “UV-B screening agent’ means a chromophore derived from a compound which screens out (or absorbs) UV-B ultraviolet rays at a wavelength of between 280 and 320 nm. the term “anhydrous" implies an amount of less than 5% by weight of water, preferentially less than 3% by weight of water, better still less than 1 % by weight of water, relative to the total weight of composition C1 , C2, C3 or C4 in question; even more preferentially, the composition is free of water; the terms “coloring agent” and “dyestuff” are equivalent.

[0014] Unless otherwise indicated, the limits delimiting the extent of a range of values are included in that range of values.

[0015] Unless otherwise indicated, the amounts indicated are expressed as mass percentages.

Process for treating keratin materials

[0016] The first subject of the invention is a process in one or more steps using, on keratin materials, notably the skin: i) at least one compound of formula (I) as defined previously and hereinbelow; iii) at least one crosslinking agent as defined hereinbelow; and iii) optionally at least one cosmetic active agent as defined previously. [0017] According to a particular embodiment of the invention, the process of the invention involves the simultaneous application of ingredients i), ii) and optionally iii).

[0018] According to another particular embodiment of the invention, the process comprises at least two steps in which ingredients i), and ii) and optionally iii) (the latter ingredient may be present together with ingredient i) and/or with the ingredient(s) ii)) are applied in separate, successive steps to the keratin materials.

[0019] According to a particular embodiment, the ingredient(s) i) are applied to the keratin materials, and the ingredient(s) ii) are then applied to the keratin materials, it being understood that the ingredient(s) iii), when present, may be applied together with i) and/or ii).

[0020] According to another particular embodiment, the ingredient(s) ii) are applied to the keratin materials, and the ingredient(s) i) are then applied to the keratin materials, it being understood that the ingredient(s) iii), when present, may be applied together with i) and/or ii).

[0021] According to a particular embodiment of the invention, the process for treating keratin materials is a process for making up the skin, the lips, the eyelashes and/or the eyebrows, preferably for making up the skin and the lips.

[0022] According to another embodiment of the invention, the process for treating keratin materials is a skincare process.

[0023] According to one aspect of the invention, the process of the invention for treating keratin materials using the ingredients i), ii) and optionally iii) is a skincare treatment.

[0024] According to another aspect of the invention, the process of the invention for treating keratin materials using the ingredients i), ii) and optionally iii) is a process for making up the skin, the lips, the eyelashes and/or the eyebrows.

[0025] According to one embodiment of the invention, the process for treating keratin materials uses: a composition, termed “C1”, comprising i) at least one compound of formula (I) or (la) as defined previously and hereinbelow, and optionally iii) at least one cosmetic active agent as defined previously and hereinbelow; preferably, composition C1 does not comprise any crosslinking agent; a composition, termed “C2”, comprising i) at least one compound of formula (I) or (la) as defined previously and hereinbelow, and ii) at least one crosslinking agent as defined hereinbelow, and optionally iii) at least one cosmetic active agent as defined previously and hereinbelow; a composition termed “C3” comprising i) at least one compound of formula (I) or (la) as defined previously and hereinbelow, ii) at least one crosslinking agent as defined hereinbelow, and iii) at least one cosmetic active agent as defined previously; and/or a composition, “C4”, comprising ii) at least one crosslinking agent as defined hereinbelow, and optionally iii) at least one cosmetic active agent as defined previously and hereinbelow; preferably, composition C4 does not comprise any compound of formula (I) or (la); a composition “C5” comprising iii) at least one cosmetic active agent as defined previously and hereinbelow; preferably, composition C5 does not comprise any compound of formula (I), or ii) any crosslinking agent as defined hereinbelow; it being understood that:

. the process uses together or separately i) at least one compound of formula (I) or (la) as defined previously and hereinbelow and ii) at least one crosslinking agent as defined hereinbelow; and

. compositions C1 , C2, C3, C4 and C5 may be anhydrous, aqueous such as aqueous-alcoholic and/or comprise one or more fatty substances iv), notably one or more preferably volatile oils as defined hereinbelow.

[0026] According to one aspect of the invention, the process for treating keratin materials, in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows of the invention uses a composition, termed “C1”, comprising i) as defined previously and hereinbelow, and optionally iii) at least one cosmetic active agent as defined hereinbelow, notably chosen from a) coloring agents, such as pigments, direct dyes, and mixtures thereof, b) active agents for caring for keratin materials, preferably the skin, c) UV-screening agents, and d) mixtures thereof, and notably at least one coloring agent, more particularly at least one pigment.

[0027] According to another aspect, the process for treating keratin materials, in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows of the invention uses a composition, termed “C2”, comprising i) at least one compound of formula (I) as defined previously and hereinbelow, and ii) at least one crosslinking agent as defined hereinbelow, and optionally iii) at least one cosmetic active agent as defined previously.

[0028] According to another aspect, the process for treating keratin materials, in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows of the invention uses a composition, termed “C3”, comprising i) at least one compound of formula (I) as defined previously and hereinbelow, ii) at least one crosslinking agent as defined hereinbelow, and iii) at least one cosmetic active agent as defined previously.

[0029] According to another aspect, the process for treating keratin materials and in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows of the invention uses a composition termed “C1” and a composition termed “C4”, said composition “C1” comprising i) at least one compound of formula (I) as defined previously and hereinbelow and optionally iii) at least one cosmetic active agent as defined previously, and said composition “C4” comprising ii) at least one crosslinking agent as defined hereinbelow, and optionally iii) at least one cosmetic active agent as defined previously.

[0030] According to another variant of the process of the invention, the ingredient(s) i) and optionally iii) are applied together (i.e. simultaneously) to the keratin materials during a first step, then, during a subsequent step, the ingredient(s) ii) and optionally iii) are applied to said materials. According to a particular embodiment of the process, in the first step composition “C1” is applied to the keratin materials, and a composition “C4” comprising ii) at least one crosslinking agent and optionally iii) at least one cosmetic active agent as defined previously is then applied to said materials.

[0031] According to yet another variant of the process of the invention, ingredient(s) ii) and optionally iii) are applied to the keratin materials, and the ingredient(s) i) and optionally iii) at least one cosmetic active agent as defined previously are then applied to said materials. In particular, composition C4 is applied to the keratin materials and composition C1 is then applied.

[0032] Compositions C1 , C2, C3, C4 and/or C5 of the process of the invention, which comprise at least one fatty substance, notably at least one oil, and water, may be in the form of a direct or inverse emulsion.

[0033] Compositions C1 , C2, C3, C4 and/or C5 of the process according to the invention may thus be applied directly as such to the target keratin materials or may even be formed directly on the surface of these keratin materials.

[0034] According to the invention, three application methods known as the “one- gesture application mode”, the “two-gesture application mode” and the “three-gesture application mode” are thus distinguished.

[0035] According to one embodiment of the process of the invention, the process is performed in one gesture by applying composition C2 or C3, as defined previously, to the keratin materials. [0036] The term “one-gesture application mode” means the direct application to the target keratin materials of a single composition in accordance with the invention, namely composition C2 or C3.

[0037] After application of composition C2 or C3, a persistent, non-tacky deposit is advantageously obtained. The deposit obtained is also resistant to edible oils, water, sebum and friction.

[0038] According to another embodiment of the process of the invention, the process is performed in two gestures.

[0039] The term “two-gesture application mode” means the successive application, to the target keratin material, of two different compositions, for example C1 and C4, or C2 and C4, or C3 and C4. Preferably C1 and then C4, C2 and then C4, or C3 and then C4.

[0040] According to another embodiment, the process of the invention is performed in three gestures.

[0041] The term “three-gesture application mode” means the sequential application of three different compositions C1 to C5. According to this application mode, for example, according to one embodiment, successive application is performed on the keratin materials, a) of a composition C1 , then P) of a composition C4, then y) of a composition C5, preferably C1 then C4 or, respectively, C5 or C5 or, respectively, C4. According to another option, sequential application is performed on the keratin materials, a) of a composition, for example C4, and ) of a composition C1 or C2, and even y) of a composition C5; preferably, composition C4 is applied before composition C1.

[0042] In the two- or three-gesture application modes, the composition applied first, for example C1 , is conventionally referred to as the “base coat”, and the composition(s) superposed thereon are generally referred to as the “top coat”.

[0043] After application of the various compositions C1 to C5, a persistent, non-tacky deposit is advantageously obtained. The deposit obtained is also resistant to edible oils, water and shampoo washing.

[0044] According to a particular embodiment, the compositions are applied to dry keratin materials.

[0045] According to a particular embodiment, the keratin materials are dried after application of compositions C1 to C5, in particular after application of each different composition.

[0046] According to one aspect, the present invention relates to a process for making up the skin, notably the lips, the eyelashes or the eyebrows, comprising a step of applying to the skin, or said lips or eyelashes or eyebrows, a composition C2 or C3, notably containing at least one dyestuff as defined previously and more particularly at least one pigment.

[0047] According to another of its aspects, the present invention relates to a process for making up the keratin materials, in particular the skin, notably the lips, the eyelashes or the eyebrows, comprising at least the sequential application: of a composition C1 as defined previously; and then of a composition C4 as defined previously; it being understood that compositions C1 and/or C4 contain at least one dyestuff as defined hereinbelow, preferably at least one pigment. Preferably, composition C1 comprises at least one pigment.

[0048] According to another of its aspects, the present invention relates to a process for making up the keratin materials, in particular the skin, notably the lips, the eyelashes or the eyebrows, comprising at least the sequential application: of a composition C1 as defined previously; and then of a composition C4 as defined previously; and then of a composition C5 as defined previously; it being understood that compositions C1 and/or C4 and/or C5 contain at least one dyestuff as defined hereinbelow, preferably at least one pigment. Preferably, composition C5 comprises at least one pigment.

[0049] According to another of its aspects, the present invention relates to a process for making up the keratin materials, in particular the skin, notably the lips, the eyelashes or the eyebrows, comprising at least the sequential application: of a composition C2 or C3 as defined previously; and of a composition C4 as defined previously; it being understood that compositions C2 or C3 contain at least iii) one dyestuff as defined hereinbelow, and/or composition C4 contains at least one dyestuff as defined hereinbelow; preferably, composition C2 or C3 comprises at least one pigment.

/') Compound of formula (I)

[0050] The first ingredient(s) i) of the process of the invention are chosen from the compounds of formula (I) as defined previously. [0051] According to a particular embodiment of the invention, the ingredient(s) i) are chosen from those of formula (la) and also the optical isomers, the geometrical isomers, the salts thereof, and the solvates thereof, such as the hydrates:

[Chem. 2]:

in which formula (la):

R¹ is as defined previously, and particularly represents a linear or branched, saturated or unsaturated, conjugated or non-conjugated, acyclic or cyclic, aromatic or non-aromatic C2 to C14, in particular C3 to C12 and preferably C4 to C10 polyvalent hydrocarbon-based radical, R¹ also being: a) optionally substituted with one or more hydroxyl groups OH, and/or b) optionally interrupted with one or more heteroatoms or groups chosen from O, S, -N(R’), preferably interrupted with one or more oxygen atoms, in which R’ is as defined in formula (I);

R² is as defined previously, preferably R² represents a linear or branched (C1- Ce)alkyl group, preferably a (Ci-C4)alkyl group such as methyl or t-butyl, preferably methyl; and n being as defined previously; preferably, n denotes an integer from 2 to 8.

[0052] According to one embodiment, the compounds of formulae (I) and (la) are such that R¹ represents a linear or branched, unsaturated monocyclic or bicyclic, preferably monocyclic, Ce to Cs polyvalent hydrocarbon-based radical, and an aromatic radical such as phenyl.

[0053] According to another embodiment, the compounds of formulae (I) and (la) are such that R¹ represents a saturated monocyclic or bicyclic C5 to C12 polyvalent hydrocarbon-based radical, optionally interrupted with one or more heteroatoms or groups chosen from O, S and -N(R’)-, in which R’ represents a hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms, preferably interrupted with one or more oxygen atoms. Preferably, R¹ represents a monosaccharide or polysaccharide unit, notably a disaccharide, on which n hydroxyl groups have been substituted with n groups -O-C(O)-CH₂-C(O)-R², with R² as defined previously and n as defined previously. [0054] Suitable monosaccharides according to the invention include, but are not limited to, ribose, glucose, mannose, galactose, fructose and sorbose.

[0055] According to one embodiment, the disaccharides are chosen from cellobiose, maltose, lactose, raffinose, sucrose, trehalose, melibiulose, melibiose, mannobiose, kojibiose, nigerose, isomaltose, rutinose, rutinulose and xylobiose.

[0056] According to another preferred embodiment of the invention, the compounds of formulae (I) and (la) are such that R¹ represents a linear or branched, saturated or unsaturated, preferably saturated, acyclic C2-C12, preferably C3-C10, polyvalent hydrocarbon-based radical.

[0057] According to a particular embodiment of the invention, the compounds of formulae (I) and (la) are such that n denotes an integer from 2 to 8; more particularly, n denotes an integer from 3 to 6, more particularly from 3 to 5. According to one embodiment, the compounds of formulae (I) and (la) are such that n is 2. According to another embodiment, the compounds of formulae (I) and (la) are such that n is 3. According to another embodiment, the compounds of formulae (I) and (la) are such that n is 4. According to another embodiment, the compounds of formulae (I) and (la) are such that n is 5. According to another embodiment, the compounds of formulae (I) and (la) are such that n is 6.

[0058] In one variant of the invention, the compound of formula (I) or (la) as defined previously is a mixture of (poly)acetoacetylated compounds of different structures.

[0059] More particularly, the compound(s) of formulae (I) and (la) are chosen from the following compounds, and also the optical isomers thereof, the salts thereof, and the solvates thereof, such as hydrates:

[0060] [Table 1]

in which R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHS group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CHs, preferably at least three radicals R1 represent - C(O)-CH₂-C(O)-CH₃, more preferentially, the compounds are chosen from (18), (21), (38), (41), (44) and (50) and better still (21), (38) (41), (44) and (50).

Even more preferentially, the compounds are chosen from (18), (21), (38), (41) and (44), even better still (21), (38), (41) and (44).

Advantageously, the compounds are chosen from (18), (21), (41) and (44) and more advantageously (21), (41) et (44).

[0061] The compound(s) of formula (I) or (la) as defined previously are preferably present in a mass ratio of from 0.2% to 100%, particularly from 0.5% to 60%, more particularly from 5% to 40% relative to the total weight of composition C1 , C2 or C3 containing same. In particular, the crosslinking agent(s) and the compound(s) of formula (I) or (la) are preferably present in a mass ratio of from 7% to 35% relative to the total weight of the composition comprising same.

[0062] The compound(s) of formula (I) or (la) may be obtained by (poly)condensation(s) of n equivalents of dicarbonyl reagent with a nucleophilic reagent R¹(XH)_n including n equivalents of nucleophilic functions -XH according to the following scheme:

[0063] [Chem 3]:

[0064] in which scheme:

R¹, R², R^a, R^b and n are as defined for the compound of formula (I); and

R³ represents a hydrogen atom, a (Ci-C^alkyl group such as methyl, ethyl, isobutyl, t-butyl, or an electrofugal group such as CHa , or Ha C-SO2- such as triflate, with Hal, which may be identical or different, representing a halogen atom;

X’ represents an oxygen or sulfur atom, preferably O. [0065] These (poly)condensation methods are known to those skilled in the art: mention may be made, for example, of “From rigid and flexible foams to elastomers via Michael addition chemistry”, Polymer, 106, 128-139, (2016), “Dynamic Curing Agents for Amine-Hardened Epoxy Vitrimers with Short (Re)processing Times”, Macromolecules, 53(7), 2485-2495 (2020), “Super photo-base initiated organic- inorganic hybrid coatings by plural-cure mechanisms”, Progress in Organic Coatings, 127, 222-230 (2019) or patent application PL159100: Method for manufacturing acetyl acetate esters.

[0066] According to a particular embodiment of the invention, R¹(XH)_n is chosen from acyclic polyols R¹(OH)_n notably chosen from glycerol, trimethylolpropane, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, trimethylolethane, pentamethylene glycol, trimethylpentanediol, pentyl glycol, isosorbide, pentaerythritol, dipentaerythritol, hexamethylene glycol, hexylene glycol, hexanediol, neopentyl glycol, 1 ,2-propanediol;

1.3-propanediol; 1 ,2-butanediol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol; 2,4- butanediol, 3,4-butanediol; 1 ,4-pentanediol; 1,5-pentanediol, 2,2,4-trimethyl-1 ,3- pentanediol, 1 ,6-hexanediol, 1,2-octanediol, 1 ,8-octanediol, 1,10-decanediol, 2-methyl-

1.3-propanediol, hexylene glycol and isoprene glycol.

[0067] In one variant, R¹(XH)_n is chosen from cyclic polyols R¹(OH)_n notably chosen from monosaccharides and disaccharides, as defined previously, alone or as mixtures.

[0068] Preferentially, R¹(XH)_n is chosen from polyols R¹(OH)_n alone or as mixtures, notably from trimethylolethane, glycerol, trimethylolpropane, pentaerythritol, glycerol, glucose, sucrose and sorbitol.

[0069] According to another variant, R¹(XH)_n is chosen from diamines R¹(NH₂)2 notably hydroxyalkylated aliphatic diamines such as o,o’-bis(diethanolaminomethyl)-p- nonylphenol, N,N,N,N’-tetrakis(2-hydroxypropyl)ethylenediamine (Quadrol L, available from BASF) and N,N,N,N-tetrakis(2-hydroxyethyl)ethylenediamine, and mixtures thereof.

[0070] According to another advantageous variant, the compound(s) of formula (I) or (la) are obtained by (poly)condensation(s) of n equivalents of propylenedioxy carbonyl reagent with a polyamine nucleophilic reagent R¹(NH)_n including n equivalents of -NH2 nucleophilic functions according to the following scheme:

[0071] [Chem. 4]:

[0072] in which scheme:

R¹, R², R^a and n are as defined for the compound of formula (I);

R¹-NH2 is notably chosen from ethylenediamine, 1 ,3-diaminopropane, cadaverine, hexamethylenediamine, 1 ,2-diaminopropane, 1 ,2-diaminocyclohexane and phenylenediamine; and

R^b’ and R^c’, which may be identical or different, represent a hydrogen atom or a (Ci- C4)alkyl group.

[0073] This type of synthetic process according to scheme 2 is known to those skilled in the art: for example, mention may be made of “Acetoacetylation with 2,2,6-trimethyl- 4H-1 ,3-dioxin-4-one: a convenient alternative to diketene”, Journal of Organic Chemistry, 50(14), 2431-5, (1985) or “Synthesis of new Biginelli polycondensates: renewable materials with tunable high glass transition temperatures”, Polymer International, 70(5), 506-513 (2021).

[0074] According to another advantageous variant, the compound(s) of formula (I) or (la) are obtained by (poly)condensation(s) of n equivalents of diketene reagent with a nucleophilic reagent R¹(X)_n including n equivalents of nucleophilic functions -XH according to the following scheme:

[0075] [Chem 5]

[0076] in which scheme:

R¹ and n are as defined for the compound of formula (I);

X’ represents an oxygen or sulfur atom, or N(R’) with R’ = H. [0077] This type of process is known to those skilled in the art. Mention may be made, for example, of “Acetoacetamides, 2-hydroximinoacetoacetamides, and 2,3- bis(hydroximino)butyramides”, Journal fur Praktische Chemie (Leipzig), 323(2), 337-44, (1981) or Angewandte Makromolekulare Chemie, 9, 96-105, (1969).

/'/) Crosslinking agent

[0078] The process of the invention uses ii) one or more crosslinking agents. For the purposes of the invention, the term “crosslinking agent”, also termed “R”, denotes a compound that is capable of establishing with at least one ACAC function of the compound of formula (I) or (la): at least one covalent bond, at least one donor-acceptor (dative) bond, and/or at least one coordination bond, and thus of crosslinking the compound of formula (I) or (la).

[0079] Preferably, the term “crosslinking agent” denotes a compound that is capable of establishing at least one covalent bond with a function ACAC of the compounds of formula (I) or (la).

[0080] For the purposes of the present invention, it is understood that the terms “crosslinking agent” and “crosslinker” are equivalent.

[0081] Compositions C2, C3 and C4 contain at least one crosslinking agent. The compositions of the invention may comprise a fatty phase, an aqueous phase or may be in the form of a direct or inverse emulsion. Composition C4 may be an aqueous composition.

[0082] According to one aspect, the process of the invention uses a composition termed “C3”, notably a cosmetic composition for keratin materials, in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows and/or for care, comprising i) at least one compound of formula (I) as defined previously, ii) at least one crosslinking agent and iii) at least one cosmetic active agent as defined previously, and notably at least one coloring agent, more particularly at least one pigment.

[0083] The crosslinking agent(s) as defined previously are preferably present in a mass ratio of from 0.2% to 60%, particularly from 0.5% to 40% and more particularly from 5% to 40% relative to the total weight of the composition containing same. In particular, the crosslinking agent(s) and the compound(s) of formula (I) or (la) are preferably present in a mass ratio of from 7% to 35% relative to the total weight of the composition comprising same. [0084] More precisely, the crosslinking agent(s) R that are suitable for use in the invention may be chosen from compounds bearing amine, thiol, acrylate and/or carbonyl functions, such as a ketone or aldehyde function. A crosslinking agent R may also denote a metal alkoxide.

[0085] Thus, according to a particular embodiment, the crosslinking agent R is chosen from (poly)amine, (poly)thiol, (poly)carbonyl, (poly)acrylate and/or metal alkoxide compounds, and mixtures thereof, and preferably chosen from (poly)amine, (poly)thiol and (poly)acrylate compounds and mixtures thereof.

[0086] The term “(poly)amine, (poly)thiol, (poly)carbonyl and (poly)acrylate compounds” is intended to denote compounds including at least one primary or secondary amine, thiol, carbonyl (such as a ketone or aldehyde function) or acrylate function, respectively.

A) (Poly)amine compounds

[0087] According to a preferred embodiment, the crosslinking agent R is chosen from (poly)amine compounds.

[0088] The (poly)amine compound may be chosen in particular from polyamine compounds bearing several primary and/or secondary amine groups or from amino alkoxysilanes, and more particularly from amino alkoxysilane compounds, diamine compounds, triamine compounds, and mixtures thereof.

[0089] The (poly)amine compound may be a compound comprising from 2 to 20 carbon atoms, notably a nonpolymeric compound; they may be acyclic or cyclic, linear or branched, saturated or unsaturated, conjugated or non-conjugated, aromatic or nonaromatic, optionally interrupted with one or more heteroatoms chosen from O, S, Si(R’)2, N(R”) preferably O, Si(R’)2, or combinations thereof such as -Si(R’)2-O- or -O-Si(R’)2-, with R’, which may be identical or different, representing a (Ci-C4)alkyl group such as methyl, and R” representing a hydrogen atom or a (Ci-C4)alkyl group, preferably hydrogen.

[0090] The term “non-polymeric compound’ means a compound which is not directly obtained via a monomer polymerization reaction.

[0091] (Poly)amine compounds that may be mentioned in particular include N-methyl- 1 ,3-diaminopropane, N-propyl-1 ,3-diaminopropane, N-isopropyl-1 ,3-diaminopropane, N-cyclohexyl-1 ,3-diaminopropane, 2-(3-aminopropylamino)ethanol, 3-(2- aminoethyl)aminopropylamine, bis(3-aminopropyl)amine, methylbis(3- aminopropyl)amine, N-(3-aminopropyl)-1 ,4-diaminobutane, N,N- dimethyldipropylenetriamine, 1 ,2-bis(3-aminopropylamino)ethane, N,N’-bis(3- aminopropyl)-1 ,3-propanediamine, ethylenediamine, 1 ,3-propylenediamine, 1 ,4- butylenediamine, lysine, cystamine, xylenediamine, tris(2-aminoethyl)amine, 1 ,3- bis(aminomethyl)cyclohexane, 1 ,4-bis(aminomethyl)cyclohexane, diaminopropanol, 4,7,10-trioxa-1 ,13-tridecanediamine, spermidine and C36-alkylenediamines (Priamine™ 1071 , 1073, 1074, 1075, respectively).

[0092] According to a particular embodiment of the invention, the (poly)amine compound(s) are monoamine compounds, i.e. they contain only one primary and/or secondary amine group, preferably a primary amine group (NH2).

[0093] The (poly)amine compound(s) may be chosen from amino alkoxysilanes, notably of formula R’iSi(OR’2)z(R’3)x in which:

R’1 is a linear or branched, saturated or unsaturated, cyclic or acyclic Ci-Ce hydrocarbon-based chain substituted with a group chosen from primary amine groups NH2 or secondary amine groups -N(H)R with R representing a C1-C4 alkyl, an aryl or a benzyl substituted with an amino group or with a C1-C4 aminoalkyl group; R’1 may be interrupted in its chain with a heteroatom (O, S, NH) or a carbonyl group (CO), R’1 being linked to the silicon atom directly via a carbon atom,

R’₂ and R’₃, which may be identical or different, represent a linear or branched (C1- Ce)alkyl group, z denotes an integer ranging from 1 to 3, and x denotes an integer ranging from 0 to 2, with z + x = 3.

[0094] In particular, R’1 is an acyclic chain. Preferably, R’1 is a linear or branched, saturated or unsaturated Ci-Ce hydrocarbon-based chain substituted with an amine -NH2 or -N(H)R group, with R representing a Ci-Ce alkyl, a C3-C6 cycloalkyl or a Ce aromatic group. More preferentially, R’1 is a saturated linear Ci-Ce hydrocarbonbased chain substituted with an amine group NH2. Even more preferentially, R’1 is a saturated linear C2-C4 hydrocarbon-based chain substituted with an amine group NH2.

[0095] In particular, R’2 represents an alkyl group comprising from 1 to 4 carbon atoms; preferably, R’₂ represents a linear alkyl group comprising from 1 to 4 carbon atoms and more preferentially R’₂ represents an ethyl group.

[0096] In particular, R’3 represents an alkyl group comprising from 1 to 4 carbon atoms; preferably, R’3 represents a linear alkyl group comprising from 1 to 4 carbon atoms and more preferentially R’3 represents methyl or ethyl groups. Preferably, z is equal to 3.

[0097] In particular, the (poly)amine compound(s) are chosen from amino alkoxysilanes including only one primary and/or secondary, preferably primary (NH₂), amine group, such as 3-aminopropyltriethoxysilane (APTES), 3- aminoethyltriethoxysilane (AETES), 3-aminopropylmethyldiethoxysilane, N-(2- aminoethyl)-3-aminopropyltriethoxysilane, 3-(m-aminophenoxy)propyltrimethoxysilane, p-aminophenyltrimethoxysilane, and N-(2- aminoethylaminomethyl)phenethyltrimethoxysilane.

[0098] Preferably, the (poly)amine compound(s) are chosen from 3- aminopropyltriethoxysilane (APTES), 3-aminoethyltriethoxysilane (AETES), 3- aminopropylmethyldiethoxysilane, and N-(2-aminoethyl)-3-aminopropyltriethoxysilane, and more preferentially 3-aminopropyltriethoxysilane (APTES).

[0099] The (poly)amine compound may also be chosen from amino polymers, notably having a weight-average molecular weight ranging from 500 g.mol’¹ to 1 000000 g.mol’¹, preferably ranging from 500 g.mol’¹ to 500 000 g.mol’¹, and preferentially ranging from 500 g.mol’¹ to 100 000 g.mol’¹.

[00100] According to a particular embodiment of the invention, the (poly)amine compound(s) are monoamine compounds and are chosen from polydialkylsiloxanes, notably of formula (IV)

H₂N-ALK-Si(R’₂)(R’₃)-O-[ Si(R’₂)(R'3)-O]_n-Si(R’₂)(R’3)-R’4 (IV) in which formula (IV) ALK represents a linear or branched, preferably linear, (C C4)alkylene group such as propylene, R'₂ and R'3, which may be identical or different, preferably identical, represent a (Ci-C4)alkyl group such as methyl, and R'4 represents a linear or branched (Ci-Ce)alkyl group, preferably a C4 group such as n-butyl, n represents an integer greater than or equal to 2; preferably, the value of n is such that the weight-average molecular weight of the polydimethylsiloxane ranges from 500 to 3000 g. mol’¹. As examples of polydimethylsiloxanes (IV), mention may be made of the products sold under the names MCR-A11 and MCR-A12 by the company Gelest.

[00101] According to a particular embodiment of the invention, the (poly)amine compounds are diamine compounds, i.e. they contain two primary and/or secondary amine groups, preferably primary amine groups (NH₂). More particularly, they are chosen from the compounds of formulae (V) and (VI):

ALK[(O-ALK’)_m-NH₂]₂ (V) or

H₂N-ALK-Si(R’)₂-[O-Si(R’)₂]_m-O-Si(R)₂-ALK’-NH₂ (VI) in which formulae (V) and (VI) ALK and ALK’, which may be identical or different, represent a linear or branched, preferably linear, (Ci-Ce)alkylene group, such as propyl, R’, which may be identical or different, represents a (Ci-C4)alkyl group, such as methyl, m representing an integer greater than or equal to 0; preferably, the value of m is such that the weight-average molecular weight of compound (V) or (VI) ranges from 500 g.mok¹ to 55 000 g.mol’¹. As examples of compounds of formula (VI), mention may be made of those sold under the names DMS-A11 , DMS-A12, DMS-A15, DMS-A21 , DMS-A31 , DMS-A32 and DMS-A35 by the company Gelest.

[00102] The (poly)amines compounds that are diamines are particularly polyether diamines notably of formula H2N-ALK-O-[ALK’-O]_m-ALK”-NH2 with ALK, ALK’ and ALK”, which may be identical or different, representing a linear or branched (Ci-Ce))alkylene group, and m representing an integer greater than or equal to 0, such as 4,7.10-trioxa- 1 ,13-tridecanediamine or the compounds known in particular under the reference Jeffamine from the company Hunstman, and more particularly a,w-diamino polyethylene glycol and/or polypropylene glycol (with an amine function at the end of the chain) such as the products sold under the names Jeffamine D-230, D-400, D-2000, D-4000, ED- 600, ED-9000 and ED-2003.

[00103] According to a particular embodiment of the invention, the (poly)amine compound(s) are triamine compounds, i.e. they contain three primary and/or secondary amine groups, preferably primary amine groups (NH2). More particularly, the polyether triamines notably of formula ALK’”[(O-ALK’)_m-NH2]3 with n and ALK’ as defined previously and ALK’” representing a linear or branched trivalent (Ci-Ce)alkylene group, and m representing an integer greater than or equal to 0.

[00104] As (poly)amine compounds that are triamine compounds, mention may be made in particular of polyether triamines, and notably a,w-diamino polyethylene glycol and/or polypropylene glycol (with an amine function at the end of the chain) such as the products sold under the names Jeffamine T-403.

[00105] According to another particular embodiment of the invention, the (poly)amine compound(s) include more than three primary and/or secondary amine groups, preferably primary amine groups (NH₂).

[00106] In this variant, the (poly)amine compound(s) are chosen from poly(meth)acrylates or poly(meth)acrylamides bearing lateral primary or secondary amine functions, such as poly(3-aminopropyl)methacrylamide and poly(2-aminoethyl) methacrylate.

[00107] Preferably, the (poly)amine compounds are chosen from chitosans (notably poly(D-glucosamine)) and polydimethylsiloxanes comprising primary amine groups at the end of the chain and/or on side chains.

[00108] According to this variant, the (poly)amine compound(s) are chosen in particular from amino and poly((C2-C5)alkyleneimines), and preferably polyethylenimines and polypropyleneimines, notably poly(ethyleneimine), in particular the product sold under reference 408700 by the company Aldrich Chemical or under the trade name Lupasol by BASF, notably with a molecular weight of between 1200 and 25000; poly(allylamine), in particular the product sold under reference 479136 by the company Aldrich Chemical; polyvinylamines and copolymers thereof, notably with vinylamides, in particular vinylamine/vinylformamide copolymers such as those sold under the name Lupamin® 9030 by the company BASF; polyamino acids containing NH2 groups, such as polylysine, in particular the product sold by the company JNC Corporation (formerly Chisso); amino dextran, in particular the product sold by the company CarboMer Inc; amino polyvinyl alcohol, in particular the product sold by the company CarboMer Inc; acrylamido(Ci- Ce)alkylamine-based copolymers, notably acrylamidopropylamine-based copolymers; and poly(D-glucosamine), for example sold under the reference Kionutrime CSG® by the company Kytozyme.

[00109] According to one embodiment, the polydimethylsiloxanes comprising primary amine groups at the end of the chain and/or on side chains are chosen from formula (VII) below:

Ra-Si(Rb)(Rc)-O-[Si(Rb)(Rc)-O]m-[Si(ALK¹-NH₂)(Ra)-O]_n-Si(Rb)(Rc)-Ra (VII) in which formula (VII) R_a, which may be identical or different, represents a hydroxyl or (Ci-C4)alkyl group, Rb and R_c, which may be identical or different, preferably identical, represent a (Ci-C4)alkyl group such as methyl, ALK¹ represents a linear or branched (Ci-Ce)alkylene group, optionally interrupted with an N(H) group, m and n are integers greater than or equal to 1 ; preferably, m and n are such that the weight-average molecular mass of the compound of formula (VII) ranges from 1000 g.mol'¹ to 500 000 g.mol'¹.

[00110] According to an advantageous variant, formula (VII) is such that R_a, Rb and R_c represent a methyl group, ALK¹ represents a propylene group, the values of n and m are such that the weight-average molecular weight of the polydimethylsiloxane ranges from 1000 g.mol-¹ to 55 000 g.mol-¹. As examples of polydimethylsiloxanes of formula (VI), mention may be made of those sold under the names AMS-132, AMS-152, AMS- 162, AMS-163, AMS-191 and AMS-1203 by the company Gelest.

[00111] According to another variant, formula (VII) is such that R_a represents a hydroxyl or (Ci-C4)alkyl group, such as methyl, ALK¹ represents a (C5-Ce)alkylene group substituted with an NH group; preferably, ALK¹ represents -(CH2)s-N(H)-(CH2)2-, and m and n are such that the weight-average molecular mass of the compound of formula (VI) ranges from 5000 g.mol'¹ to 500 000 g.mol'¹.

[00112] As amine polymer, mention may also be made of a,w-diamino polytetrahydrofurans (or polytetramethylene glycol) and a,w-diamino polybutadienes. [00113] According to a particular embodiment of the invention, the (poly)amine compounds are chosen from hyperbranched polymers comprising at least one amino group and dendrimers bearing at least one amino group, such as PAMAM polyamidoamine dendrimers with an ethylenediamine core and a terminal amine function.

[00114] Thus, according to a preferred embodiment, the composition according to the invention comprises a crosslinking agent R chosen from (poly)amine compounds, in particular chosen from chitosans, aminoalkoxysilanes, polydimethylsiloxanes comprising primary amine groups at the end of the chain or on side chains, amodimethicones, polyglucosamines, and mixtures thereof.

[00115] More preferentially, the composition according to the invention comprises a crosslinking agent R chosen from chitosans, aminoalkoxysilanes and polydialkylsiloxanes comprising primary amine groups at the end of the chain or on side chains, and even more preferentially chosen from poly(D-glucosamine), 3- aminopropyltriethoxysilane (APTES), 3-aminoethyltriethoxysilane (AETES), 3- aminopropylmethyldiethoxysilane, /V-(2-aminoethyl)-3-aminopropyltriethoxysilane and polydimethylsiloxanes comprising terminal aminopropyl groups at the end of the chain, and even more preferentially 3-aminopropyltriethoxysilane (APTES).

B) (Poly)thiol compounds

[00116] According to a preferred embodiment, the crosslinking agent R is chosen from (poly)thiol compounds, also known as "(poly) mercapto” compounds.

[00117] The (poly)thiol compound may in particular be organic or inorganic, preferably organic.

[00118] In a preferred embodiment, the (poly)thiol compound is silicon-based, i.e. it includes one or more thiol groups and it also includes at least one siloxane chain.

[00119] In a particular embodiment, the (poly)thiol compound is inorganic. Mention may be made, for example, of polythiol silicones.

[00120] The (poly)thiol compound used in a composition according to the invention may in particular be chosen from non-polymeric (poly)thiol compounds.

[00121] For the purposes of the present invention, the term “non-polymeric compounds” means compounds which are not directly obtained via a monomer polymerization reaction. [00122] According to one embodiment of the invention, the (poly)thiol compound(s) are organic, non-polymeric and of formula (VIII) below and also the solvates thereof such as hydrates:

L(SH)_q (VIII) in which formula (VIII):

- q represents an integer greater than or equal to 2; preferably, n is between 2 and 10 and preferably between 2 and 5 inclusive;

- L denotes a linear or branched, saturated or unsaturated, or (hetero)cyclic, saturated or unsaturated, multivalent (at least divalent) group, in particular comprising between 1 and 500 carbon and/or silicon atoms, more particularly between 2 and 40 carbon and/or silicon atoms, even more particularly between 3 and 30 carbon and/or silicon atoms, preferably between 6 and 20 carbon atoms; L being optionally interrupted and/or terminated with one or more heteroatoms or groups chosen from O, S, N, Si, C(X), and combinations thereof such as -O-, -O-C(X)-, -N(R)-C(X)-, -Si(R_c)(Rd)-O- with R representing a hydrogen atom or a (Ci-Ce)alkyl group such as methyl; and/or

L being optionally substituted with one or more groups chosen from:

-N(R_a)Rb and -(X’)_a-C(X)-(X”)_b-R_a; with X, X’ and X”, which may be identical or different, representing an oxygen or sulfur atom, or a group N(R_b); a and b being 0 or 1 , preferably the sum of a + b being 1 ; R_a and R_b, which may be identical or different, represent a hydrogen atom or a (Ci-Ce)alkyl or aryl(Ci-C4)alkyl group, such as benzyl, preferably R_a and R_b represent a hydrogen atom; and R_c and Rd, which may be identical or different, represent a (Ci-Ce)alkyl, aryl(Ci-C4)alkyl or (Ci-Ce)alkoxy group.

[00123] According to a particular embodiment of the invention, the (poly)thiol compound(s) are chosen from polythiol compounds, notably polythiol compounds comprising from 2 to 20 carbon atoms.

[00124] According to a preferred embodiment, the (poly)thiol compound(s) are non- polymeric and notably of formula (VIII) defined above, in which q is an integer greater than or equal to 2, and preferably p is an integer between 2 and 10 and preferably between 2 and 5 inclusive.

[00125] The (poly)thiol compound(s) that are suitable for use in the invention are preferably dithiol compounds.

[00126] Preferably, L denotes a Cs-Cis multivalent radical, which is notably linear. Preferentially, the liposoluble polythiol is a notably linear Cs-Cis dithiol. Advantageously, the Cs-Ci8 chain is a hydrocarbon-based chain, i.e. formed from carbon and hydrogen. In particular, the liposoluble polythiol is a linear Cs-Ci6 and notably C10-C14 dithiol. As (poly)thiol compounds of formula (VII), mention may be made more particularly of 1 ,8- octanedithiol, 1 ,10-decanedithiol, 1 ,12-dodecanedithiol, 1 ,14-tetradecanedithiol, 1 ,16- hexadecanedithiol and 1 ,18-octadecanedithiol. Use is preferably made of 1 ,10- decanedithiol, 1 ,12-dodecanedithiol or 1 ,14-tetradecanedithiol, preferentially 1 ,12- dodecanedithiol.

[00127] According to another particular embodiment of the invention, the (poly)thiol compound(s) are chosen from thiolated alkoxysiloxanes, such as those of formula (VIII’) below: R’i-Si(OR’₂)z(R’3)x (VIII’) in which formula (VIII’):

• R’1 is a linear or branched, saturated or unsaturated, cyclic or acyclic C1-C12 hydrocarbon-based chain substituted with one or more groups chosen from the following groups: thiol, and aryl, aryloxy, arylthio or arylamino, the aryl group being substituted with one or more thiol or thio(Ci-Ce)alkyl groups, preferably thio(Ci-Ce)alkyl, and

R’1 is optionally interrupted in its hydrocarbon-based chain with one or more heteroatoms such as O, S, N, a carbonyl group C(O), or a combination thereof such as ester -C(O)-O-, or amide -C(O)-N(H)-, R’1 being bonded to the silicon atom directly via a carbon atom,

• R’2 and R’3, which may be identical or different, represent a linear or branched alkyl group comprising from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atom(s) such as methyl,

• z denotes an integer ranging from 1 to 3, and

• x denotes an integer ranging from 0 to 2, with z + x = 3.

[00128] Preferably, R’2 represents a linear or branched, preferably linear, alkyl group comprising from 1 to 4 carbon atoms, such as ethyl.

[00129] Preferably, R’3 represents a linear or branched, preferably linear, alkyl group comprising from 1 to 4 carbon atoms, such as methyl or ethyl.

[00130] Preferably, R’1 is an acyclic chain, in particular R’1 is a linear or branched, saturated or unsaturated, preferably saturated, Ci-Ce hydrocarbon-based chain substituted with one or more thiol groups, preferably substituted with one thiol group.

[00131] Preferably, R’1 is a saturated linear Ci-Ce hydrocarbon-based chain substituted with a thiol group, and R’2 represents an alkyl group comprising from 1 to 4 carbon atoms. [00132] R represents an alkyl group comprising from 1 to 4 carbon atoms. Preferably, z is equal to 3.

[00133] According to a more particular embodiment of the invention, the thiolated alkoxysiloxanes are chosen from those of formula (IX) below: (R¹O)(R²)(R³)Si-[CH(R⁴)]t-[N(R’⁴)-L¹]_p-SH (IX) in which formula (IX):

• p is 0 or 1 ; and t is an integer between 1 and 4, preferably 2;

• R¹ represents a (Ci-Ce)alkyl radical;

• R² and R³, which may be identical or different, preferably identical, are chosen from: a (Ci-Ce)alkyl group, in particular a C1-C4 alkyl group such as methyl; a (Ci-Ce)alkoxy group, in particular a (Ci-C4)alkoxy group such as methoxy;

• R⁴ and R’⁴, which may be identical or different, represent a hydrogen atom or a (C1- Ce)alkyl group, such as methyl;

• L¹ represents a divalent, saturated, linear or branched C1-C20 hydrocarbon-based radical.

[00134] According to a particular embodiment of the invention, the thiolated alkoxysiloxanes are chosen from those of formula (IX’) below:

(R’¹O)(R’²)(R’³)Si-CH(R⁴)-CH(R⁵)-(L²)_q-SH (IX’) in which formula (IX’):

• q is 0 or 1 ;

• X represents an oxygen or sulfur atom, preferably a sulfur atom;

• R’¹ denotes a (Ci-Ce)alkyl radical;

• R’² and R’³, which may be identical or different, preferably identical, are chosen from: a (Ci-Ce)alkoxy group, in particular C1-C4; a (Ci-Ce)alkyl radical;

• R⁵ represents a hydrogen atom or a C1-C4 alkyl group optionally substituted with an amino, thiol or hydroxyl group;

• R⁴ represents a hydrogen atom or a C1-C4 alkyl group, in particular methyl;

• L² represents a linear or branched, saturated C1-C20 divalent hydrocarbon-based group, optionally interrupted with a heteroatom such as -N(H)-, and/or optionally substituted with one or more hydroxyl, thiol or amino groups.

[00135] Preferably, the thiolated alkoxysilane(s) are chosen from 4-(trimethoxysilyl)-1- butanol, 3-(trimethoxysilyl)-1-propanol, 3-(triethoxysilyl)-1 -propanol, 11- (trimethoxysilyl)-l -undecanethiol, 4-(trimethoxysilyl)-2-butanethiol, 2- (triethoxysilyl)ethanethiol, 3-(triethoxysilyl)-1 -propanethiol, 2- (trimethoxysilyl)ethanethiol, 3-(trimethoxysilyl)-1 -propanethiol and 3- (dimethoxymethylsilyl)-l-propanethiol.

[00136] More preferentially, the thiolated alkoxysilane(s) are chosen from 2- (triethoxysilyl)ethanethiol (18236-15-2) and 3-(triethoxysilyl)-1-propanethiol (14814-09- 6).

[00137] According to a preferred embodiment of the invention, the (poly)thiol compound(s) are chosen from polymeric (poly)thiol compounds.

[00138] The polymeric (poly)thiol compounds may be star, comb, brush and dendritic homopolymers or copolymers bearing hydroxyl and/or thiol units. The polymers may be of natural origin such as polysaccharides or polypeptides, or of synthetic origin such as acrylic polymers, polyesters or polyglycols. The thiol units may be present as terminal and/or side groups.

[00139] Examples that may be mentioned include the polymers described in the following scientific articles: Polymers containing groups of biological activity, C.G. Overbergeret al., Polytechnic Institute of Brooklyn, http://pac.iupac.org/publications/pac/pdf/1962/pdf/0402x0521.pdf; EP 1 247515 A2; US 3 676 440; and EP 1 572 778.

[00140] The polymeric (poly)thiol compounds of the invention are preferably organic and/or silicone compounds, more preferentially of formula (X): POLY(SH)_q (X) in which formula (X):

• q is greater than or equal to 2, preferably greater than or equal to 3;

• POLY denotes a polymeric radical which is preferably carbon-based or silicon- based;

POLY being optionally interrupted with one or more heteroatoms or groups chosen from O, S, N, Si and C(X), and combinations thereof such as -O-, -O-C(X)-, -N(R)-C(X)- or -Si(R_c)(Rd)-O- with R representing a hydrogen atom or a (Ci-Ce)alkyl group such as methyl; and/or

POLY being optionally substituted with one or more halogen atoms, or a group chosen from R_a(Rb)N- and -(X’)_a-C(X)-(X”)_b-R_a;

X, X’ and X”, which may be identical or different, represent an oxygen or sulfur atom, or a group N(R_b); a and b being equal to 0 or 1 ; preferably, the sum a + b is equal to 1 ; R_a and Rb, which may be identical or different, represent a hydrogen atom or a (Ci- Cw)alkyl or aryl(Ci-C4)alkyl group such as benzyl; preferably, R_a and Rb represent a hydrogen atom; and

R_c and Rd, which may be identical or different, represent a (Ci-Cw)alkyl, aryl(Ci- C4)alkyl or (Ci-Cw)alkoxy group.

[00141] The methods for preparing the polymeric (poly)thiol compounds used according to the invention are known to those skilled in the art; several methods are reported hereinbelow in a non-limiting manner. The polymeric (poly)thiol compounds used according to the invention may be obtained by polymerization or polycondensation of monomer units bearing thiol or protected thiol functions, optionally as a copolymerization or co-polycondensation of monomer units free of thiol or protected thiol functions.

[00142] According to one embodiment of the invention, the polymeric (poly)thiol compounds used according to the invention are polymers which are soluble in cosmetic media, particularly in aqueous or aqueous-alcoholic media. They are more preferentially obtained from amino polymers and the ammonium salts thereof or from polyhydroxylated polymers.

[00143] According to another embodiment of the invention, the thiolated polymers used according to the invention are polymers that are soluble in lipophilic media.

[00144] According to one embodiment of the invention, the polythiol compound is a polymeric compound of formula (X) in which q denotes an integer greater than or equal to 2, and POLY denotes a carbon-based and/or silicon-based, preferably silicon-based, polymeric radical, POLY also possibly containing one or more heteroatoms chosen from O, N or S, and/or one or more functions chosen from (thio)ester, (thio)ketone, (thio)amide, (thio)urea and (thio)carbamate functions, and/or possibly being substituted with one or more linear or branched (Ci-Cw)alkyl or linear or branched (Ci-Cw)alkoxy groups, it being understood that when POLY is substituted, the thiol functions may be borne by the substituent(s).

[00145] The weight-average molecular weight of the polythiol polymer compounds, such as those of formula (X), is generally between 500 and 400 000 g.mol’¹, preferably between 500 and 150 000 g.mol’¹. According to a particular embodiment of the invention, the polythiol compounds are chosen from polyorganosiloxanes including thiol groups on end chains, such as those of formula (XI) below:

HS-L⁴-Si(R^a)(R^b)-O-[Si(R^a)(R^b)-O]_n-Si(R^a)(R^b)-L⁵-SH (XI) in which formula (XI): • R^a and R^b, which may be identical or different, preferably identical, represent a group from among: (Ci-C4)alkyl such as methyl, (Ci-C4)alkoxy such as methoxy, aryl such as phenyl, aryloxy such as phenoxy, aryl(Ci-C4)alkyl such as benzyl, or aryl(Ci- C4)alkoxy such as benzoxy, preferably (Ci-C4)alkyl such as methyl,

• n represents an integer greater than or equal to 1 and more particularly the value of n is such that the weight-average molecular weight of the silicone ranges from 500 to 55 000 g.mol’¹; in particular, n is an integer ranging from 1 to 100, preferably ranging from 5 to 50 and preferentially ranging from 10 to 30, and

• L⁴ and L⁵, which may be identical or different, preferably identical, represent a linear or branched, saturated or unsaturated, optionally cyclic hydrocarbon-based chain comprising from 1 to 100 carbon atoms, optionally interrupted with one or more heteroatoms such as oxygen, sulfur or nitrogen, in particular oxygen, and in particular represent a covalent bond or a (Ci-Ce)alkylene, (Ci-Ce)alkylenoxy, oxy(Ci-Ce)alkylene, (Ci-C6)alkylenoxy(Ci-Ce)alkylene, (Ci-C6)alkylenoxy(Ci-Ce)alkylenoxy or oxy(Ci- Ce)alkylenoxy(Ci-C6)alkylene group, preferably a (Ci-Ce)alkylene, (Ci-Ce)alkylenoxy, oxy(Ci-Ce)alkylene or (Ci-C6)alkylenoxy(Ci-Ce)alkylene group.

[00146] Preferentially, the (poly)thiol compounds are polythiol polyorganosiloxanes, more preferentially polythiol polydimethylsiloxanes, notably chosen from those of formula (XII):

HS-L⁴-Si(CH₃)2-O-[Si(CH3)2-O]_n-Si(CH3)2-L⁵-SH (XII) in which formula (XII):

• L⁴ and L⁵ are as defined previously in formula (XI), in particular L⁴ and L⁵ represent a (Ci-Ce)alkylene, (Ci-Ce)alkylenoxy, oxy(Ci-Ce)alkylene or (Ci-Ce)alkylenoxy(Ci- Ce)alkylene group, more preferentially a divalent group chosen from -R₂-, -O-R2-, - R2-O- and -R2-O-R2-, preferably -R2-O-R2-, with R2 representing a linear or branched, preferably linear, (C2-Ce)alkylene group, such as ethylene or n-propylene, preferably n-propylene; and

• n is as defined in formula (XI).

[00147] As polythiol compounds of formula (XII), mention may be made of mercaptosiloxanes or thiolated siloxanes in which the thiol functions are at the chain ends, sold by the company Shin-Etsu under the reference X-22-167B, and mercaptosiloxanes in which the mercapto functions are pendent, sold by the company Shin-Etsu under the reference KF-2001 , or polydimethylsiloxanes in which the thiol functions are at the chain ends, via thio-n-propyl, 80-120 groups, sold by the company Gelest under the name DMS-SM 21 . [00148] Preferentially, the polythiol compounds are chosen polyorganosiloxanes including thiol groups on side chains, such as those of formula (XIII):

R^a-Si(R^b)(R^d)-O-[Si(R^a)(R^b)-O]m-[Si(R^b)(ALKi-SH)-O]_n-Si(R^b)(R^d)-R^a (XIII) in which formula (XIII):

• R^a and R^b are as defined in formula (XI) and R^d is as defined for R^a and R^b, preferably R^a, R^b and R^d, which are identical, represent a (Ci-Ce)alkyl group, such as methyl;

• R^d may also represent a (Ci-Ce)alkyl group substituted with a (Ci-C4)alkylamino or amino or thiol group, preferably (Ci-C4)alkyl such as methyl;

• ALKi represents a linear or branched, optionally cyclic, saturated or unsaturated divalent hydrocarbon-based chain comprising from 1 to 100 carbon atoms, optionally interrupted with one or more heteroatoms such as oxygen, sulfur or nitrogen (in particular O), a (thio)carbonyl group C(X) with X representing O or S, or combinations thereof such as -O-, -O-C(O)- or -C(O)-O-; preferably, ALKi represents a (Ci- Ce)alkylene and more preferentially (Ci-C4)alkylene group such as propylene;

• n and m, which may be identical or different, representing an integer greater than 2, and more particularly the values of m and n are such that the weight-average molecular weight of said polyorganosiloxane is between 1000 and 55 000 g.mol’¹.

[00149] As examples of polythiol compounds of formula (XIII), mention may be made of those sold by the company Genesee Polymers under the names GP-367, GP-71-SS, GP-800 and GP-710s, preferably GP-367, sold by the company Genesee Polymers.

[00150] The polythiol compounds are notably polydimethylsiloxanes including at least two thiol groups, for instance the products SMS-022, SMS-042 and SMS-992 sold by the company Gelest in https://www.gpcsilicones.com/products/silicone-fluids/mercapto- functional, https://www.shinetsusilicone- global.com/products/type/oil/detail/search/deg07.shtml, and 1053_Reactive Silicones_Silanes/Silicones - Gelest.

[00151] According to a particular embodiment of the invention, the (poly)thiol compounds are chosen from hyperbranched polymers comprising at least one thiol group and dendrimers bearing at least one thiol group, such as thiolated PAMAM dendrimers.

[00152] Preferably, the (poly)thiol compounds used according to the invention are chosen from polydiallylsiloxanes, notably polydimethylsiloxanes, including at least two thiol groups such as those of formula (XIII).

C) (Poly)carbonyl compounds [00153] According to a particular embodiment, the crosslinking agent R is a (poly)carbonyl compound.

[00154] In particular, the (poly)carbonyl compound is chosen from terephthalaldehyde,

5.5-dimethyl-1 ,3-cyclohexanedione, phenylglyoxal, isophthalaldehyde, 4- acetylbenzaldehyde, 4,4-diformyltriphenylamine, 2-acetylbenzaldehyde, 3-(2- furoyl)quinoline-2-carboxaldehyde, 3-(2-furoyl)quinoline-2-carboxaldehyde, 3- acetylbenzaldehyde, 9-(2-ethylhexyl)carbazole-3,6-dicarboxaldehyde, phthaldialdehyde, 1 ,3-cyclohexanedione, 4,4’-biphenyldicarboxaldehyde, benzene-

1.3.5-tricarboxaldehyde, and nonionic or anionic oxidized polysaccharides such as oxidized inulins, notably those of formula (II) as defined hereinbelow. In particular, the (poly)carbonyl compounds include a saturated or unsaturated, aromatic C5-C7 carbocycle, preferably aromatic, such as phenyl, or non-aromatic and saturated such as cyclohexyl, more preferentially unsaturated and aromatic, such as terephthaldehyde.

[00155] According to a particular embodiment, the (poly)carbonyl compound(s) are chosen from nonionic or anionic oxidized polysaccharides comprising one or more aldehyde groups, and optionally one or more anionic groups.

[00156] These anionic groups are preferably carboxyl or carboxylate groups.

The nonionic or anionic oxidized polysaccharides according to the invention may be represented by formula (II) below: P-(CHO)_m (COOQ)_n (II) in which formula (II):

• P represents a polysaccharide chain preferably consisting of monosaccharides comprising 5 carbon atoms or more than 5 carbon atoms, preferably 6 or more than 6 carbon atoms and more particularly 6 carbon atoms;

• Q is chosen from a hydrogen atom, the ions derived from an alkali metal or an alkaline-earth metal such as sodium or potassium, ammonia, organic amines such as monoethanolamine, diethanolamine, triethanolamine and 3-amino-1 ,2- propanediol and basic amino acids such as lysine, arginine, sarcosine, ornithine and citrulline;

• m + n is greater than or equal to 1 ,

• m is such that the degree of substitution of the polysaccharide with one or more aldehyde groups (DS(CHO)) is within the range from 0.001 to 2 and preferably from 0.005 to 1.5; • n is such that the degree of substitution of the polysaccharide with one or more carboxylic groups (DS(COOX)) is within the range from 0 to 2 and preferably from 0.001 to 1.5.

[00157] The expression “degree of substitution DS(CHO) or DS(COOX) of the polysaccharides according to the invention” means the ratio between the number of carbons oxidized to give an aldehyde or carboxylic group for all the repeating units and the number of elementary monosaccharides (even opened by preoxidation) constituting the polysaccharide. The groups CHO and COOX may be obtained during the oxidation of certain carbon atoms, for example on the carbon atoms 2, 3 or 6, of a saccharide unit containing 6 carbon atoms.

[00158] Preferably, the oxidation may take place on carbons 2 and 3, more particularly of 0.01 % to 75% by number, and preferably of 0.1 % to 50% by number of the rings that may have been opened.

[00159] The polysaccharide chain, represented by P, is preferably chosen from celluloses, starches, maltodextrins, guar gums, xanthan gums, pullulan gums, agar-agar gums, carrageenan gums, gellan gums, acacia gums, polyxylans and tragacanth gums, and derivatives thereof.

[00160] The term “derivative” means compounds obtained by chemical modification of the mentioned compounds. They may be esters, amides or ethers of said compounds.

[00161] The oxidation may take place according to a process known in the art, for example according to the process described in FR 2 842 200, in document FR 2 854 161 or in the article “Hydrophobic films from maize bran hemicelluloses” by E. Fredon et al., Carbohydrate Polymers 49, pages 1 to 12 (2002).

[00162] Another oxidation process is described in the article “Water soluble oxidized starches by peroxide reaction extrusion” Industrial Crops and Products 7, R.E. Wing, J.L. Willet, 45-52 (1997).

[00163] According to this embodiment, the (poly)carbonyl compound is associated in its implementation with an amine catalyst as described in the articles Progress in coating 129, 21-25 (2019) and Progress in coating 135, 510-516 (2019); preferably, the amine catalyst(s) are chosen from piperidine, DMAP (dimethylaminopyridine), DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene), DABCO (1 ,4-diazabicyclo[2.2.2]octane) and DBN (1 ,5-diazabicyclo[4.3.0]non-5-ene), more preferentially chosen from DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene), DABCO (1 ,4-diazabicyclo[2.2.2]octane) and DBN (1 ,5-diazabicyclo[4.3.0]non-5-ene), and in particular the catalyst is DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene). D) (Poly)acrylate compounds

[00164] According to a particular embodiment, the crosslinking agent is a (poly)acrylate compound.

[00165] The term “(poly) acrylate" means a compound which comprises at least one acrylate ester group H₂C=C(R^e)-C(O)-Y- with R^e representing a hydrogen atom or a (Ci- C^alkyl group, such as methyl, preferably R^e representing a hydrogen atom, and Y representing an oxygen atom or an amino group -N(H)-, preferably O.

[00166] More particularly, the (poly)acrylate(s) of the invention are of formula (XIV): L[-Y-C(O)-C(R^e)=CH₂]_q (XIV) in which formula (XIV) q and L are as defined in formula (VIII), Y and R^e being as defined previously, preferably Y = O and R^e = H. According to a preferred embodiment, the compounds of formula (XIV) are such that L represents a di- or trivalent, preferably trivalent, hydrocarbon-based chain comprising from 1 to 8 carbon atoms, q is 2 or 3, preferably 3, Y represents O, and R^e represents a hydrogen atom.

[00167] According to a particular embodiment, the (poly)acrylate compounds are chosen from polyorganosiloxanes including at least one acrylate group on the side chain, such as those of the formula:

R^a-Si(R^b)(R^d)-O-[Si(R^a)(R^b)-O]_m-[Si(R^b)(ALKi-Y-C(O)-C(R^e)=CH₂)-O]_n-Si(R^b)(R^d)-R^a

(XV) in which formula (XV):

• R^a, R^b and R^d are as defined for formula (XIII), and preferably represent a (C Ce)alkyl group such as methyl,

• ALKi is as defined for formula (XIII), preferably ALKi represents a (Ci-Ce)alkylene group, more preferentially a (Ci-C4)alkylene group, such as propylene; and

• n and m, which may be identical or different, represent an integer greater than 2 and more particularly the values of m and n are such that the weight-average molecular weight of said polyorganosiloxane is between 1000 and 55 000 g.mol’¹.

• Y is as defined previously, preferably O.

[00168] More particularly, the (poly)acrylate compound may be chosen from 1 ,3- butanediol diacrylate, 1 ,4-butanediol diacrylate, bis(trimethylolpropane) tetraacrylate, glyceryl 1 ,3-diglycerolate diacrylate, glyceryl propoxylate (1 PO/OH) triacrylate, 1 ,6- hexanediol diacrylate, 1 ,6-hexanediol ethoxylate diacrylate, hydroxypivalyl hydroxypivalate, neopentyl glycol diacrylate, neopentyl glycol propoxylate (1 PO/OH) diacrylate, pentaerythrityl tetraacrylate, pentaerythrityl triacrylate, polypropylene glycol) diacrylate, tricyclo[5.2.1.02,6]decanedimethanol diacrylate, trimethylolpropane ethoxylate (1 EO/OH) methyl ether diacrylate, trimethylolpropane propoxylate triacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, tri(propylene glycol) diacrylate, trimethylolpropane triacrylate, and tris[2-(acryloyloxy)ethyl] isocyanurate.

[00169] The (poly)acrylate compound may also be chosen from N,N’- methylenebisacrylamide.

[00170] According to this embodiment, the (poly)acrylate compound is combined in its implementation with an amine catalyst as described, for example, in Progress in coating 129, 21-25 (2019) and Progress in coating 135, 510-516 (2019). Preferably, the amine catalyst(s) are chosen from piperidine, DMAP (dimethylaminopyridine), DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene), DABCO (1 ,4-diazabicyclo[2.2.2]octane) and DBN (1 ,5-diazabicyclo[4.3.0]non-5-ene), more preferentially chosen from DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene), DABCO (1 ,4-diazabicyclo[2.2.2]octane) and DBN (1 ,5-diazabicyclo[4.3.0]non-5-ene), and in particular the catalyst is DBU (1 ,8- diazabicyclo[5.4.0]undec-7-ene).

[00171] More particularly, the (poly)acrylate compounds are chosen from those of formula (XIV), notably trimethylolpropane triacrylate, and those of formula (XV), notably copolymers of dimethylsiloxane and acryloxypropylmethylsiloxane.

E) Metal alkoxides

[00172] According to another particular embodiment, the crosslinking agent R is a compound chosen from the metal alkoxides of formulae (XI V_a), (XI Vb), (XI V_c) and (XXlVd) below and mixtures thereof:

[00173] [Table 2]

M-(ORl)n (XlVa) R-M-(ORl)n-1 (XlVb)

(RiO)n-i-M-R"-M'-(ORi’)n-i (XIVc) R-M(R’)-(ORi)_n-2 (XXIV_d) in which formulae (XIV_a), (XIV_b), (XIV_C) and (XIV_d):

- M and M’, which may be identical or different, represent an atom chosen from alkaline- earth metals, transition metals, metals of the lanthanide family, post-transition metals such as aluminum or tin and metalloids such as boron; preferably transition metals such as Ti and post-transition metals such as aluminum;

- n and n’ respectively represent the valencies of the atoms represented by M and M’;

- Ri and Ri’, which may be identical or different, represent a linear or branched, saturated or unsaturated hydrocarbon-based group containing from 1 to 30 carbon atoms, preferably from 1 to 6 carbon atoms, said hydrocarbon-based group being optionally interrupted with

1 to 20 heteroatoms chosen from O, N, S and P, notably O or N; and/or said hydrocarbonbased group being optionally substituted with one or more hydroxyl or carbonyl groups;

- R and R’, which may be identical or different, represent a hydrogen atom or a linear, branched, acyclic or cyclic, saturated or unsaturated hydrocarbon-based group containing from 1 to 30 carbon atoms, preferably from 2 to 20 carbon atoms, optionally interrupted with 1 to 20 heteroatoms chosen from O, N, S and/or P, notably O or N, and/or said hydrocarbon-based group being optionally substituted with one or more hydroxyl or carbonyl groups;

- R” represents -O-, -N(R2)-, -S- or a linear, cyclic or branched, saturated or unsaturated divalent hydrocarbon-based group containing from 1 to 30 carbon atoms, preferably from

2 to 20 carbon atoms, optionally interrupted with 1 to 20 heteroatoms chosen from O, N, S and P, notably O or N, with R2 representing a linear, cyclic or branched, saturated or unsaturated hydrocarbon-based group containing from 1 to 30 carbon atoms, preferably from 2 to 20 carbon atoms.

[00174] Preferably, M and M’, which may be identical or different, represent an atom chosen from transition metals such as titanium or zirconium or alkaline-earth metals such as magnesium, more preferentially chosen from transition metals such as titanium or zirconium, even more preferentially titanium.

[00175] Preferably, the organometallic compound(s) are chosen from the alkoxides of formula (XIV_a) as defined previously. According to this preferred embodiment, the organometallic compound(s) are more particularly chosen from the alkoxides of formula (XIV_a) in which:

- M represents an atom chosen from transition metals, metals of the lanthanide family, post-transition metals, such as aluminum, tin, metalloids such as boron, or alkaline-earth metals, such as magnesium or calcium;

- n represents the valency of the atom represented by M;

- Ri represents a saturated, linear or branched, hydrocarbon-based group containing from 1 to 30 carbon atoms, preferably from 1 to 6 carbon atoms.

[00176] According to another more preferred embodiment, the organometallic compound(s) are chosen from the alkoxides of formula (XIV_a), in which M represents an atom chosen from transition metals, such as zirconium or titanium, metals of the lanthanide family, post-transition metals, such as aluminum or tin, metalloids such as boron, and alkaline-earth metals, such as magnesium, preferably M represents a titanium atom; n represents the valency of the atom represented by M, notably 1 , 2, 3 or 4, in particular 4; Ri represents a methyl, ethyl, 2-ethylhexyl, propyl, isopropyl, n-butyl, isobutyl or t-butyl group. According to an even more preferred embodiment, the organometallic compound(s) are chosen from zirconium ethoxide (Zr(OC2Hs)4), zirconium propoxide (Zr(OCH2CH2CHs)4), zirconium isopropoxide (Zr(OCH (CH 3)2)4), zirconium butoxide Zr(OCH2CH2CH2CHs)4, zirconium tert-butoxide (Zr(OC(CHs)3)4), titanium ethoxide (Ti(OC2Hs)4), titanium propoxide (Ti(OCH2CH2CHs)4), titanium isopropoxide (Ti(OCH(CH₃)2)4), titanium butoxide (Ti(OCH2CH2CH₂CH3)4), titanium tert- butoxide (Ti(OC(CHs)3)4), titanium 2-ethylhexyloxide (Ti(OCH2CH(C2Hs)(CH2)3CH3)4), and mixtures thereof, more preferentially chosen from zirconium propoxide, titanium propoxide, titanium butoxide and mixtures thereof. More preferentially, the crosslinking agent R is a compound of formula (XXIV_a) preferably in which M represents an atom chosen from transition metals, notably titanium such as titanium butoxide.

[00177] According to a preferred embodiment, the crosslinking agent is chosen from (poly)amine compounds A), (poly)thiol compounds B), (poly)carbonyl compounds C) and (poly)acrylate compounds D), and preferably from (poly)amine compounds A) and (poly)thiol compounds B).

[00178] In particular, said (poly)amine compounds A) are chosen from a) chitosans, such as poly(D-glucosamine), b) polyether diamines, particularly polyethylene glycol a,w-diamines (bearing an amine function at the end of the chain) and 4,7, 10-trioxa-1 , 1 - tridecanediamine, c) polyether triamines, such as polyetheramines (or Jeffamine), d) aminoalkoxysilanes, such as APTES, e) polydialkylsiloxanes comprising primary amine groups at the end of the chain or on side chains, in particular polydimethylsiloxanes comprising primary amine groups, such as bis(3-aminopropyl)-terminated poly(dimethoxysiloxane) (PDMS-diNH2) and amodimethicones comprising amine groups on side chains, such as bis-cetearyl amodimethicone.

[00179] In particular, said (poly)thiol compounds B) are chosen from a) polydialkylsiloxanes bearing thiol functions, and b) alkoxysilanes bearing thiol functions, and in particular are chosen from a) polydialkylsiloxanes bearing thiol functions, preferentially polydimethylsiloxanes comprising thiol groups on the side chain (such as mercaptopropyl), notably those of formula (XIII).

[00180] In particular, said (poly)acrylate D) compounds are chosen from those of formula (XIV), notably trimethylolpropane triacrylate, and those of formula (XV), notably copolymers of dimethylsiloxane and acryloxypropylmethylsiloxane, preferably trimethylolpropane triacrylate.

Hi) Cosmetic active agent [00181] According to a particular embodiment, the process of the invention uses one or more cosmetic active agents.

[00182] More particularly, in the process of the invention, at least one of the compositions C1 , C2, C3, C4 or C5 used comprises one or more cosmetic active agents. In particular, the cosmetic active agent(s) of the invention are chosen from a) dyestuffs (or coloring agents) chosen from pigments, direct dyes, and mixtures thereof, b) active agents for caring for keratin materials, preferably the skin, c) UV-screening agents, and d) mixtures thereof.

[00183] According to a particular embodiment, the at least one cosmetic agent is chosen from dyestuffs, preferably chosen from pigments, direct dyes and mixtures thereof, more preferentially pigments.

[00184] Needless to say, a person skilled in the art will take care to select this or these optional cosmetic active agent(s), and/or the amount thereof, such that the advantageous properties of the corresponding composition according to the invention are not, or are not substantially, adversely affected by the envisaged addition.

Dyestuffs

[00185] According to a particular embodiment, the process of the invention uses one or more dyestuffs.

[00186] More particularly, in the process of the invention, at least one of the compositions C1 , C2, C3, C4 or C5 used comprises at least one particulate or nonparticulate, water-soluble or water-insoluble dyestuff, preferably in a proportion of at least 0.01 % by weight relative to the total weight of the composition considered.

[00187] For obvious reasons, this amount is liable to vary significantly with regard to the intensity of the desired color effect and of the color intensity afforded by the dyestuffs under consideration, and its adjustment clearly falls within the competence of a person skilled in the art.

[00188] Preferably, at least one of the compositions C1 , C2, C3, C4 or C5 comprises at least one dyestuff chosen from pigments, direct dyes and mixtures thereof, more preferentially pigments; more preferentially, the pigment(s) of the invention are chosen from carbon black, iron oxides, notably yellow, red and black iron oxides, and micas coated with iron oxide, triarylmethane pigments, notably blue and violet triarylmethane pigments, such as Blue 1 Lake, azo pigments, notably red azo pigments, such as D&C Red 7, an alkali metal salt of lithol red, such as the calcium salt of lithol red B, even more preferentially red iron oxides, yellow iron oxides and azo pigments, notably red azo pigments, such as D&C Red 7. Pigments

[00189] For the purposes of the invention, the term “pigment’ means any compound that is capable of imparting color to keratin materials. These compounds have a solubility in water at 25°C and at atmospheric pressure (760 mmHg) of less than 0.05% by weight, and preferably less than 0.01 % by weight.

[00190] As pigments that are suitable for use in the invention, mention may notably be made of the organic and/or mineral pigments known in the art, notably those described in Kirk-Othmer’s Encyclopedia of Chemical Technology and in Ullmann’s Encyclopedia of Industrial Chemistry. These pigments may be synthetic or natural. These pigments may be in pigment powder or paste form. They may be coated or uncoated. These pigments may be chosen, for example, from mineral pigments, organic pigments, lakes, pigments with special effects such as nacres or glitter flakes, and mixtures thereof.

[00191] A pigment that is suitable for use in the invention may be chosen from mineral pigments.

[00192] The term “mineral pigment’ means any pigment that satisfies the definition in Ullmann’s encyclopedia in the chapter on inorganic pigments. Among the mineral pigments that are useful in the present invention, mention may be made of manganese violet, ultramarine blue, chromium hydrate, ferric blue and titanium, zirconium or cerium oxides or dioxides, and also of zinc, iron or chromium oxides.

[00193] They may also be pigments having a structure that may be, for example, of sericite/brown iron oxide/titanium dioxide/silica type. Such a pigment is sold, for example, under the reference Coverleaf NS or JS by the company Chemicals and Catalysts, and has a contrast ratio in the region of 30. They may also be pigments having a structure that may be, for example, of silica microsphere type containing iron oxide. An example of a pigment having this structure is the product sold by the company Miyoshi under the reference PC Ball PC-LL-100 P, this pigment being constituted of silica microspheres containing yellow iron oxide.

[00194] Advantageously, the pigments may be iron oxides and/or titanium dioxides.

[00195] A pigment that is suitable for use in the invention may be chosen from organic pigments.

[00196] The term “organic pigment’ means any pigment that satisfies the definition in Ullmann’s encyclopaedia in the chapter on organic pigments. Among the organic pigments that are useful in the present invention, mention may be made of nitroso, nitro, azo, xanthene, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phthalocyanine, metal-complex, isoindolinone, isoindoline, quinacridone, perinone, perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane and quinophthalone compounds. In particular, the white or colored organic pigments may be chosen from carmine, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, the blue pigments codified in the Color Index under the references Cl 42090, 69800, 69825, 74100, 74160, the yellow pigments codified in the Color Index under the references Cl 11680, 11710, 19140, 20040, 21100, 21108, 47000, 47005, the green pigments codified in the Color Index under the references Cl 61565, 61570, 74260, the orange pigments codified in the Color Index under the references Cl 11725, 45370, 71105, the red pigments codified in the Color Index under the references Cl 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880, 26100, 45380, 45410, 58000, 73360, 73915, 75470, the pigments obtained by oxidative polymerization of indole or phenol derivatives as described in patent FR 2 679 771 .

[00197] Examples that may also be mentioned include pigment pastes of organic pigments, such as the products sold by the company Hoechst under the names: Cosmenyl Yellow IOG: Yellow 3 pigment (Cl 11710); Cosmenyl G yellow: Yellow 1 pigment (Cl 11680); Cosmenyl GR orange: Orange 43 pigment (Cl 71105); Cosmenyl R red: Red 4 pigment (Cl 12085); Cosmenyl FB carmine: Red 5 pigment (Cl 12490); Cosmenyl RL violet: Violet 23 pigment (Cl 51319); Cosmenyl A2R blue: Blue 15.1 pigment (Cl 74160); Cosmenyl GG green: Green 7 pigment (Cl 74260); Cosmenyl R black: Black 7 pigment (Cl 77266).

[00198] The pigments in accordance with the invention may also be in the form of composite pigments, as described in patent EP 1 184 426. These composite pigments may notably be composed of particles including an inorganic core, at least one binder for attaching the organic pigments to the core, and at least one organic pigment which at least partially covers the core.

[00199] The organic pigment may also be a lake.

[00200] The term “lake" refers to dyes adsorbed onto insoluble particles, the assembly thus obtained remaining insoluble during use.

[00201] The mineral substrates onto which the dyes are adsorbed are, for example, alumina, silica, calcium sodium borosilicate or calcium aluminum borosilicate and aluminum. Among the dyes adsorbed on organic substrates, mention may be made of carminic acid. Mention may also be made of the dyes known under the following names: D & C Red 21 (Cl 45 380), D & C Orange 5 (Cl 45 370), D & C Red 27 (Cl 45410), D & C Orange 10 (Cl 45 425), D & C Red 3 (Cl 45 430), D & C Red 4 (Cl 15 510), D & C Red 33 (Cl 17 200), D & C Yellow 5 (Cl 19 140), D & C Yellow 6 (Cl 15 985) D & C Green 5 (Cl 61 570), D & C Yellow 10 (Cl 77 002), D & C Green 3 (Cl 42 053), D & C Blue 1 (Cl 42 090), FDC Red 4, D & C Red 6, D & C Red 22, D & C Red 28, D & C Red 30, D & C Orange 4, D & C Yellow 8, D & C Green 5, D & C Red 17, D & C Green 6, D & C Yellow 11 , D & C Violet 2, Sudan red, carotenes (P-carotene, lycopene), xanthophylls (capsanthin, capsorubin, lutein), palm oil, Sudan brown, quinoline yellow, annatto, curcumin, betanin (beet), carmine, copper chlorophyllin, methylene blue, anthocyanins (enocianine, black carrot, hibiscus, elderberry), caramel, riboflavin, beet juice and caramel.

[00202] An example of a lake that may be mentioned is the product known under the following name: D&C Red 7 (Cl 15 850:1).

[00203] The pigment may also be a pigment with special effects.

[00204] The term “pigments with special effects" refers to pigments that generally create a colored appearance (characterized by a certain shade, a certain vivacity and a certain level of luminance) that is non-uniform and that changes as a function of the conditions of observation (light, temperature, angles of observation, etc.). They thereby differ from colored pigments, which afford a standard uniform opaque, semi-transparent or transparent shade.

[00205] Several types of special effect pigments exist: those with a low refractive index, such as fluorescent or photochromic pigments, and those with a higher refractive index, such as nacres, interference pigments or glitter flakes.

[00206] The size of the pigment used in the composition according to the present invention is generally between 10 nm and 200 pm, preferably between 20 nm and 80 pm and more preferentially between 30 nm and 50 pm.

[00207] The pigments may be dispersed in the composition by means of a dispersant.

[00208] This dispersant may be a surfactant, an oligomer, a polymer or a mixture of several thereof, bearing one or more functionalities with strong affinity for the surface of the particles to be dispersed. In particular, they may become physically or chemically attached to the surface of the pigments. These dispersants also contain at least one functional group that is compatible with or soluble in the continuous medium. In particular, esters of 12-hydroxystearic acid in particular and of Cs to C20 fatty acid and of polyols such as glycerol or diglycerol are used, such as poly(12-hydroxystearic acid) stearate with a molecular weight of approximately 750 g/mol, such as the product sold under the name Solsperse 21 000 by the company Avecia, polyglyceryl-2 dipolyhydroxystearate (CTFA name) sold under the reference Dehymyls PGPH by the company Henkel, or polyhydroxystearic acid such as the product sold under the reference Arlacel P100 by the company Uniqema, and mixtures thereof. As other dispersants that may be used in the compositions of the invention, mention may be made of quaternary ammonium derivatives of polycondensed fatty acids, for instance Solsperse 17 000 sold by the company Avecia, and polydimethylsiloxane/oxypropylene mixtures such as those sold by the company Dow Corning under the references DC2- 5185 and DC2-5225 C. The pigments used in the composition may be surface-treated with an organic agent. According to a particular embodiment, the dispersant(s) are of amino silicone type other than the alkoxysilanes described previously and are cationic. Preferably, the pigment(s) are chosen from mineral, mixed mineral-organic, or organic pigments.

[00209] According to a particular embodiment, the pigment(s) according to the invention are organic pigments, preferentially organic pigments surface-treated with an organic agent chosen from silicone compounds.

[00210] According to another embodiment of the invention, the pigment(s) according to the invention are mineral pigments.

[00211] According to a particular embodiment of the invention, the cosmetic active agent is a dyestuff chosen from one or more direct dyes.

[00212] The term “direct dye" means natural and/or synthetic dyes, other than oxidation dyes. These are dyes that will spread superficially on the fiber. They may be ionic or nonionic, preferably cationic or nonionic.

[00213] Among the direct dyes that are suitable for use in the invention, mention may be made of azo direct dyes; (poly)methine dyes such as cyanines, hemicyanines and styryls; carbonyl dyes; azine dyes; nitro(hetero)aryl dyes; tri(hetero)arylmethane dyes; porphyrin dyes; phthalocyanine dyes and natural direct dyes, alone or in the form of mixtures.

[00214] The direct dyes are preferably cationic direct dyes. Mention may be made of the hydrazono cationic dyes of formulae (A) and (B) below and the azo cationic dyes of formulae (C) and (D) below:

[00215] [Table 3]

Het⁺-C(Ra)=N-N(Rb)-Ar, Q- Het⁺-N(Ra)-N=C(Rb)-Ar, Q-

(A) (B)

Het⁺-N=N-Ar, Q- Ar⁺-N=N-Ar”, Q-

(C) (D) in which formulae (A) to (D):

Het⁺ represents a cationic heteroaryl radical, preferentially bearing an endocyclic cationic charge, such as imidazolium, indolium or pyridinium, which is optionally substituted, preferentially with at least one (Ci-Cs)alkyl group such as methyl;

Ar represents an aryl radical, such as phenyl or naphthyl, bearing an exocyclic cationic charge, preferentially ammonium, particularly tri(Ci-C8)alkylammonium, such as trimethylammonium;

Ar represents an aryl group, notably phenyl, which is optionally substituted, preferentially with one or more electron-donating groups such as optionally substituted (Ci-Cs)alkyl, optionally substituted (Ci-Cs)alkoxy, (di)(Ci-Cs)(alkyl)amino optionally substituted on the alkyl group(s) with a hydroxyl group, aryl(Ci-C8)alkylamino, and optionally substituted N-(Ci-C8)alkyl-N-aryl(Ci-C8)alkylamino or alternatively Ar represents a julolidine group;

Ar” represents an optionally substituted (hetero)aryl group, such as phenyl or pyrazolyl, which are optionally substituted, preferentially with one or more (Ci-Cs)alkyl, hydroxyl, (di)(Ci-Cs)(alkyl)amino, (Ci-Cs)alkoxy or phenyl groups;

Ra and Rb, which may be identical or different, represent a hydrogen atom or a (Ci- Cs)alkyl group, which is optionally substituted, preferentially with a hydroxyl group; or else the substituent Ra with a substituent of Het⁺ and/or Rb with a substituent of Ar form, together with the atoms that bear them, a (hetero)cycloalkyl; in particular, Ra and Rb represent a hydrogen atom or a (Ci-C4)alkyl group optionally substituted with a hydroxyl group;

Q- represents an organic or mineral anionic counterion, such as a halide or an alkyl sulfate.

[00216] In particular, mention may be made of the azo and hydrazono direct dyes bearing an endocyclic cationic charge of formulae (A) to (D) as defined previously, more particularly the cationic direct dyes bearing an endocyclic cationic charge described in patent applications WO 95/15144, WO 95/01772 and EP 714 954, preferentially the direct dyes of formulae (E) and (F) below:

[00217] [Table 4]

in which formulae (E) and (F):

R¹ represents a (Ci-C4)alkyl group such as methyl;

R² and R³, which may be identical or different, represent a hydrogen atom or a (Ci- C4)alkyl group, such as methyl;

R⁴ represents a hydrogen atom or an electron-donating group such as optionally substituted (Ci-Cs)alkyl, optionally substituted (Ci-Cs)alkoxy, or (di)(Ci-Cs)(alkyl)amino optionally substituted on the alkyl group(s) with a hydroxyl group; in particular, R⁴ is a hydrogen atom;

Z represents a CH group or a nitrogen atom, preferentially CH;

Q- is an anionic counterion as defined previously, in particular a halide, such as chloride, or an alkyl sulfate, such as methyl sulfate or mesyl.

[00218] In particular, the dyes of formulae (E) and (F) are chosen from Basic Red 51 , Basic Yellow 87 and Basic Orange 31 or derivatives thereof with Q- being an anionic counterion as defined previously, particularly a halide such as chloride, or an alkyl sulfate such as methyl sulfate or mesyl. The direct dyes may be chosen from anionic direct dyes. The anionic direct dyes of the invention are dyes commonly referred to as “acid” direct dyes owing to their affinity for alkaline substances.

[00219] The term “anionic direct dye" means any direct dye including in its structure at least one CO2R’ or SO3R’ substituent with R’ denoting a hydrogen atom or a cation originating from a metal or an amine, or an ammonium ion.

[00220] The anionic direct dyes may be chosen from direct nitro acid dyes, azo acid dyes, azine acid dyes, triarylmethane acid dyes, indoamine acid dyes, anthraquinone acid dyes, indigoid dyes and natural acid dyes.

[00221] Among the natural direct dyes that may be used according to the invention, mention may be made of lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogallin, protocatechaldehyde, indigo, isatin, curcumin, spinulosin, apigenidin and orceins. Use may also be made of extracts or decoctions containing these natural dyes and particularly henna-based poultices or extracts.

[00222] Preferably, the direct dyes are chosen from anionic direct dyes. [00223] The dyestuffs, preferably the pigments, may be present in concentrations ranging from 0.01% to 30% by weight, preferably from 0.02% to 20% by weight and more particularly from 0.05% to 15% relative to the total weight of the composition containing them.

[00224] The direct dye(s) may be present in concentrations ranging from 0.001% to 10% by weight relative to the total weight of the composition, preferably from 0.005% to 5% by weight relative to the total weight of the composition containing them.

[00225] Preferably, the cosmetic active agent(s), in particular the dyestuff(s) and more particularly the pigment(s), are introduced into at least compositions C1, C2, C3, C4 or C5.

Care active agents

[00226] According to a particular embodiment, the process of the invention uses one or more care active agents.

[00227] More particularly, in the process of the invention, according to one embodiment, at least one of the compositions C1 , C2, C3, C4 or C5 used comprises one or more care active agents, preferably in a proportion of at least 0.01% by weight relative to the total weight of the composition considered. In particular, the care active agent may be at least one hydrophilic active agent and/or one lipophilic active agent, and preferably a hydrophilic care active agent.

[00228] The term “hydrophilic active agent” means a water-soluble or water-dispersible active agent that is capable of forming hydrogen bonds.

[00229] The cosmetic care active agent(s) may notably be chosen from: a) vitamins and derivatives thereof, notably esters thereof, in particular tocopherol (vitamin E) and esters thereof (such as tocopheryl acetate), ascorbic acid (vitamin C) and derivatives thereof; b) humectants, in particular urea, hydroxyureas, glycerol, polyglycerols, glycerolglucoside, diglycerolglucoside, polyglycerylglucosides and xylitylglucoside, and in particular glycerol; c) C-glycoside compounds; d) antioxidant compounds; e) antiaging active agents, in particular hyaluronic acid compounds, and notably sodium hyaluronate, retinol and derivatives thereof, salicylic acid compounds and in particular n-octanoyl-5- salicylic acid (capryloyl salicylic acid), caffeine, adenosine, c-p-d-xylopyranoside-2- hydroxypropane and the sodium salt of 3-hydroxy-2-pentylcyclopentyl)acetic acid; f) skincare agents chosen from allantoin, panthenol and protein hydrolyzates; g) polyphenols, notably escin, ruscus, diosmin, hesperidin and resveratrol, and h) mixtures thereof. [00230] According to a particular form of the invention, in the process of the invention, at least one of the compositions C1 , C2, C3, C4 or C5 used comprises a moisturizer (also known as a humectant agent). Preferably, the care active agent is a moisturizer, and in particular is glycerine (glycerol).

[00231] The care active agent(s) may in particular be present, in the composition containing same, in a content ranging from 0.01 % to 30% by weight, relative to the weight of the composition, and preferably from 0.02% to 25% by weight.

UV-screening agents

[00232] According to one embodiment of the invention, in the process of the invention, at least one of the compositions C1 , C2, C3, C4 or C5 used comprises, as cosmetic active agent, at least one UV-screening agent. The UV-screening agent is a UV- screening agent normally used in cosmetics. It may be chosen from the positive list contained in Annex VI of (EC) Regulation No. 1223/2009, which specifies the list of UV- screening agents permitted in cosmetics. The UV-screening agents that are suitable for use in the invention may be of varied nature. They may be lipophilic, hydrophilic or insoluble organic agents.

[00233] The term “lipophilic UV-screening agent’ means any cosmetic or dermatological screening agent that can be fully dissolved in molecular form in a liquid fatty phase or that can be dissolved in colloidal form (for example in micellar form) in a liquid fatty phase.

[00234] The term “hydrophilic UV-screening agent’ means any cosmetic or dermatological screening agent that can be fully dissolved in molecular form in a liquid aqueous phase or that can be dissolved in colloidal form (for example in micellar form) in a liquid aqueous phase.

[00235] The term “insoluble UV-screening agent’ means any cosmetic or dermatological screening agent which is not defined either as a lipophilic UV-screening agent or as a hydrophilic UV-screening agent, and which is in the form of particles in aqueous phase or liquid fatty phase. The UV-screening agents of the composition according to the invention may afford UVA and/or UVB photoprotection.

[00236] According to a preferred embodiment, the compositions according to the invention, which are preferably cosmetic compositions, may comprise at least one organic and/or mineral UV-screening agent (for screening out the UV radiation of sunlight).

[00237] In particular, the UV-screening agent(s) are chosen from bis-resorcinyl triazine derivatives, dibenzoylmethane derivatives, benzylidenecamphor derivatives, and mixtures thereof. The organic UV-screening agents may also be chosen from anthranilic derivatives; cinnamic derivatives; salicylic derivatives; benzophenone derivatives; phenylbenzotriazole derivatives; benzalmalonate derivatives, notably those mentioned in patent US 5 624 663; phenylbenzimidazole derivatives; imidazolines; 4,4- diarylbutadiene derivatives; bis-benzazolyl derivatives, as described in patents EP 6693 23 and US 2 463 264; p-aminobenzoic acid (PABA) derivatives; methylenebis(hydroxyphenylbenzotriazole) derivatives, as described in patent applications US 5 237 071 , US 5 166 355, GB 2 303 549, DE 197 26, 184 and EP 893 119; benzoxazole derivatives, such as those described in patent applications EP 0 832 642, EP 1 027 883, EP 1 300 137 and DE 101 62 844; screening polymers and screening silicones such as those notably described in patent application WO 93/04665; a-alkylstyrene-based dimers such as those described in patent application DE 198 55 649; 4,4-diarylbutadienes such as those described in patent applications EP 0 967200, DE 197 46 654, DE 197 55 649, EP 1 008 586, EP 1 133 980 and EP 133 981 ; other merocyanine derivatives such as those described in patent applications WO 04/006878, WO 05/058269 and WO 06/032741 , and mixtures thereof.

[00238] According to a particular embodiment, the concentration of the organic UV- screening agents in the compositions according to the invention ranges from 1% to 50%, preferably from 1% to 40% by weight, and better still, for example, ranges from 5% to 35% by weight, relative to the total weight of the composition.

[00239] The UV-screening agent(s) may be mineral UV-screening agents, which are generally pigments. The pigments may or may not be coated.

[00240] Thus, the mineral UV-screening agents may be chosen from coated or uncoated pigments, and in particular from coated titanium oxide pigments, silicone- treated titanium oxides, uncoated titanium oxide pigments, uncoated zinc oxide pigments, coated zinc oxide pigments, uncoated cerium oxide pigments, uncoated iron oxide pigments, coated iron oxide pigments, and mixtures thereof.

[00241] According to a particular embodiment, compositions C1 to C5 according to the invention are free of mineral UV-screening agents.

[00242] According to a particular embodiment, the amount of the mineral UV-screening agent(s) present in the compositions according to the invention may range from 0.01% to 20% by weight relative to the total weight of composition C1 to C5 containing same. It ranges, for example, from 1% to 15% by weight, relative to the total weight of the composition. [00243] According to a particular embodiment, at least one of the compositions C1 to C5 according to the invention also comprises one or more organic UV-screening agents and one or more mineral UV-screening agents.

[00244] According to a particular embodiment, the compositions according to the invention comprise a combination of UV-screening agents as described in patent FR 2 977 490, patent application WO 2013/004777 or patent application US 2014/0134120.

[00245] Preferably, the process for treating keratin materials, notably the skin, and compositions C1 , C2, C3, C4 or C5 use or comprise one or more dyestuffs chosen from pigments, direct dyes and mixtures thereof, preferably pigments; more preferentially, the pigment(s) of the invention are chosen from carbon black, iron oxides, notably yellow, red and black iron oxides, and micas coated with iron oxide, triarylmethane pigments, notably blue and violet triarylmethane pigments, such as Blue 1 Lake, azo pigments, notably red azo pigments, such as D&C Red 7, an alkali metal salt of lithol red, such as the calcium salt of lithol red B, even more preferentially red iron oxides, yellow iron oxides and azo pigments, notably red azo pigments, such as D&C Red 7.

[00246] Advantageously, the process for treating keratin materials is a makeup process, notably for the skin, in particular a lip makeup process, a mascara, an eyeliner, an eye shadow or a foundation.

[00247] According to a particular embodiment, the process of the invention uses one or more fatty substances, in particular one or more oils, preferably volatile oils.

[00248] More particularly, in the process of the invention, at least one of the compositions C1 , C2, C3, C4 or C5 used in the process of the invention contains a fatty phase.

[00249] In particular, at least one of the compositions C1 , C2, C3, C4 or C5 used in the process of the invention comprises one or more fatty substances, in particular one or more oils, preferably volatile oils.

[00250] The term “oif’ refers to a fatty substance that is liquid at room temperature (20°C) and atmospheric pressure (760 mmHg).

[00251] The term “hydrocarbon-based oif’ means an oil formed essentially from, or even constituted of, carbon and hydrogen atoms, and possibly oxygen and nitrogen atoms, and not containing any silicon or fluorine atoms. It may contain alcohol, ester, ether, carboxylic acid, amine and/or amide groups. [00252] According to one embodiment of the invention, the oil(s) are chosen from volatile oils, in particular:

* hydrocarbon-based oils containing from 8 to 16 carbon atoms, and notably:

- branched Cs-Ci6 alkanes, for instance isoalkanes such as iso-alkanes (also known as isoparaffins) such as C13-C16 isoparaffin, isododecane, isodecane, isohexadecane, and for example the oils sold under the Isopar or Permethyl trade names, alone or as mixtures, preferably isododecane (also known as 2,2,4,4,6-pentamethylheptane), more preferentially isododecane;

- linear alkanes, for example Cn-C alkanes, alone or as mixtures, for instance hexane, decane, undecane, tridecane, isoparaffins such as, or n-dodecane (C12) and n- tetradecane (C14), undecane-tridecane mixtures, mixtures of n-undecane (C11) and n- tridecane (C13), and mixtures thereof and also mixtures of n-undecane (C11) and n- tridecane (C13);

- volatile, non-aromatic cyclic C5-C12 alkanes;

* short-chain esters containing from 3 to 8 carbon atoms in total, such as ethyl acetate, methyl acetate, propyl acetate or n-butyl acetate;

* carbonate hydrocarbon-based oils of structure R’I-O-C(O)-O-R’2 in which R’1 and R’2 independently denote a linear, branched or cyclic C4-C8 alkyl group, preferably a C4-C8 alkyl group, advantageously chosen from dibutyl carbonate or dipentyl carbonate;

* ether oils of formula R1-O-R2 in which R1 and R2 independently denote a linear, branched or cyclic C4-C8 alkyl group, preferably a C4-C8 alkyl group;

* silicone oils comprising in particular from 2 to 7 silicon atoms, these silicone oils optionally including alkyl or alkoxy groups containing from 1 to 10 carbon atoms, such as dimethicones of viscosity 5 and 6 cSt, cyclopentadimethylsiloxane, dodecamethylpentasiloxane, cyclohexadimethylsiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof; more preferentially, the volatile oil(s) b) are chosen from Cs-Ci6 alkanes, notably branched alkanes such as isododecane.

[00253] In particular, at least one of the compositions C1 , C2, C3, C4 or C5 used in the process according to the invention comprises one or more non-volatile oils, notably chosen from:

* non-volatile fluoro oils, notably chosen from fluorinated polyethers and fluorosilicone oils, fluorosilicones; * non-volatile silicone oils, notably chosen from non-volatile silicones having the following INCI names: dimethicone, dimethiconol, trimethyl pentaphenyl trisiloxane, tetramethyl tetraphenyl trisiloxane, diphenyl dimethicone, trimethylsiloxyphenyl dimethicone, phenyl trimethicone, diphenylsiloxy phenyl trimethicone; and also mixtures thereof;

* non-volatile apolar hydrocarbon-based oils notably chosen from linear or branched compounds of mineral or synthetic origin: i) liquid paraffin, ii) squalane, isoeicosane, iii) mixtures of linear, saturated hydrocarbons, more particularly C15-C28 hydrocarbons, such as mixtures whose INCI names are (Ci5-Cig)Alkane, (Cis-C2i)Alkane, (C21- C2s)Alkane, iv) hydrogenated or non-hydrogenated polybutenes; v) hydrogenated or non-hydrogenated polyisobutenes, preferably hydrogenated, vi) hydrogenated or nonhydrogenated polydecenes, vii) decene/butene copolymers, butene/isobutene copolymers and viii) mixtures thereof;

* non-volatile polar hydrocarbon-based oils, which may be chosen from: i) saturated, unsaturated, linear or branched C10-C26 fatty alcohols, preferably monoalcohols; advantageously, the C10-C26 alcohols are fatty alcohols, which are preferably branched when they comprise at least 16 carbon atoms; preferably, the fatty alcohol comprises from 10 to 24 carbon atoms, and more preferentially from 12 to 22 carbon atoms, notably such as lauryl alcohol, isostearyl alcohol, oleyl alcohol, 2- butyloctanol, 2-undecylpentadecanol, 2-hexyldecyl alcohol, isocetyl alcohol, octyldodecanol and mixtures thereof; ii) triglycerides consisting of fatty acid esters of glycerol, in particular the fatty acids of which may have chain lengths ranging from C4 to C36, and notably from C to C36, these oils possibly being linear or branched, and saturated or unsaturated; by way of example, mention may notably be made of heptanoic or octanoic triglycerides, capryl ic/capric acid triglycerides, plant oils such as wheatgerm oil, sunflower oil, grapeseed oil, sesame seed oil, corn oil, apricot kernel oil, castor oil, shea oil, avocado oil, olive oil, soybean oil, sweet almond oil, palm oil, rapeseed oil, cottonseed oil, hazelnut oil, macadamia oil, jojoba oil, alfalfa oil, poppy oil, pumpkin oil, marrow oil, blackcurrant oil, evening primrose oil, millet oil, barley oil, quinoa oil, rye oil, safflower oil, candlenut oil, passionflower oil, musk rose oil, groundnut oil, coconut oil, argan oil, passionflower oil, kaya oil; the liquid fraction of shea butter, and the liquid fraction of cocoa butter; and also mixtures thereof; iii) linear aliphatic hydrocarbon-based esters of formula R-C(O)-OR’ in which R-C(O)-O- represents the carboxylic acid residue containing from 2 to 40 carbon atoms, and R’ represents a hydrocarbon-based chain containing from 1 to 40 carbon atoms, aliphatic hydrocarbon-based esters of alkylene glycol, in particular ethylene glycol or propylene glycol; the total number of carbon atoms being advantageously at least 10; notably chosen from isoamyl laurate, cetostearyl octanoate, isopropyl myristate, isopropyl palmitate, isopropyl stearate or isostearate, ethyl palmitate, 2-ethylhexyl palmitate, isostearyl isostearate, octyl stearate, isostearyl heptanoate, octanoates, decanoates or ricinoleates of alcohols or of polyalcohols, such as propylene glycol dioctanoate, cetyl octanoate or tridecyl octanoate, 2-ethylhexyl palmitate, alkyl benzoate, polyethylene glycol diheptanoate, propylene glycol bis(2-ethylhexanoate) and mixtures thereof, hexyl laurate, neopentanoic acid esters, such as isodecyl neopentanoate, isotridecyl neopentanoate, isostearyl neopentanoate or 2-octyldodecyl neopentanoate, isononanoic acid esters, such as isononyl isononanoate, isotridecyl isononanoate or octyl isononanoate, oleyl erucate, isopropyl lauroyl sarcosinate, diisopropyl sebacate, isocetyl stearate, isodecyl neopentanoate, isostearyl behenate or myristyl myristate; iv) hydroxylated esters such as polyglyceryl-2 triisostearate; v) aromatic esters such as tridecyl trimellitate, C12-C15 alcohol benzoate, the 2-phenylethyl ester of benzoic acid, and butyloctyl salicylate; vi) linear fatty acid esters with a total carbon number ranging from 35 to 70, for instance pentaerythrityl tetrapelargonate; vii) esters of C24-C28 branched fatty acids or fatty alcohols such as triisoarachidyl citrate, pentaerythrityl tetraisononanoate, glyceryl triisostearate, glyceryl tris(2- decyltetradecanoate), pentaerythrityl tetraisostearate, polyglyceryl-2 tetraisostearate or pentaerythrityl tetrakis(2-decyltetradecanoate); viii) the polyesters obtained by condensation of dimer and/or trimer of unsaturated fatty acid and of diol, such as those with the INCI name Dilinoleic Acid/Butanediol Copolymer or Dilinoleic Acid/Propanediol Copolymer; the polyesters obtained by condensation of fatty acid dimer and of diol dimer, such as dimer dilinoleyl dimer dilinoleate; ix) synthetic ethers containing from 10 to 40 carbon atoms, such as dicaprylyl ether; x) dialkyl carbonates, the two alkyl chains possibly being identical or different, such as dicaprylyl carbonate; xi) vinylpyrrolidone copolymers such as vinylpyrrolidone/1 -hexadecene copolymer; and xii) mixtures thereof;

* the non-volatile carbonate oils may be chosen from the carbonates of formula Rs-O-C(O)- O-Rg, with Rs and Rg, which may be identical or different, representing a linear or branched C4 to C12 and preferentially Ce to C10 alkyl chain; the carbonate oils may be dicaprylyl carbonate (or dioctyl carbonate), bis(2-ethylhexyl) carbonate, dipropylheptyl carbonate, dibutyl carbonate, dineopentyl carbonate, dipentyl carbonate, dineoheptyl carbonate, diheptyl carbonate, diisononyl carbonate or dinonyl carbonate and preferably dioctyl carbonate; * oils known as non-volatile ether oils of formula R1-O-R2 in which R1 and R2 independently denote a linear, branched or cyclic C6-C24 alkyl group, preferably a Ce-Cis alkyl group, and preferably C8-C12 alkyl group. It may be preferable for R1 and R2 to be identical. Linear alkyl groups that may be mentioned include a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an eicosyl group, a behenyl group, a docosyl group, a tricosyl group and a tetracosyl group. Branched alkyl groups that may be mentioned include a 1 ,1- dimethylpropyl group, a 3-methylhexyl group, a 5-methylhexyl group, an ethylhexyl group, a 2-ethylhexyl group, a 5-methyloctyl group, a 1 -ethylhexyl group, a 1 -butylpentyl group, a 2-butyloctyl group, an isotridecyl group, a 2-pentylnonyl group, a 2-hexyldecyl group, an isostearyl group, a 2-heptylundecyl group, a 2-octyldodecyl group, a 1 ,3-di methyl butyl group, a 1-(1-methylethyl)-2-methylpropyl group, a 1 ,1 ,3,3-tetramethylbutyl group, a 3,5,5- trimethylhexyl group, a 1-(2-methylpropyl)-3-methylbutyl group, a 3,7-dimethyloctyl group and a 2-(1 ,3,3-trimethylbutyl)-5,7,7-trimethyloctyl group. As cyclic alkyl groups, mention may be made of a cyclohexyl group, a 3-methylcyclohexyl group and a 3,3,5- trimethylcyclohexyl group, dilauryl ether, diisostearyl ether, dioctyl ether, nonylphenyl ether, dodecyl dimethyl butyl ether, cetyl dimethyl butyl ether, cetyl isobutyl ether and mixtures thereof; more preferentially c) the non-volatile oil(s) are chosen from hydrogenated or nonhydrogenated polyisobutenes, preferably hydrogenated, for instance the non-volatile compounds of the Parleam® range; mixtures of C15-C19 alkanes, and from linear aliphatic hydrocarbon-based esters of formula R-C(O)-OR’ in which R-C(0)-0 represents a carboxylic acid residue containing from 2 to 40 carbon atoms, and R’ represents a hydrocarbon-based chain containing from 1 to 40 carbon atoms, as defined previously, notably isononyl isononanoate.

[00254] Very preferentially, the process of the invention uses one or more hydrocarbonbased oils containing from 8 to 16 carbon atoms, and notably branched Cs-Ci6 alkanes, for instance isoalkanes such as C13-C16 isoparaffins, isododecane, isodecane, isohexadecane, alone or as mixtures, preferably isododecane.

[00255] In particular, the amount of oil(s) in at least one of the compositions C1 , C2, C3, C4 or C5 used in the process is between 1% and 99% by weight, relative to the total weight of the composition, more particularly between 10% and 90% by weight, preferentially between 25% and 75%, better still between 30% and 70% by weight, relative to the total weight of the composition.

[00256] According to one embodiment, the process for treating keratin materials uses water, and the composition(s) C1 to C5 used in the process of the invention comprise water.

[00257] According to an advantageous variant, C1 is aqueous or aqueous-alcoholic.

[00258] According to an advantageous variant, C2 is aqueous or aqueous-alcoholic.

[00259] According to an advantageous variant, C3 is aqueous or aqueous-alcoholic.

[00260] According to an advantageous variant, C4 is aqueous or aqueous-alcoholic.

[00261] According to an advantageous variant, C5 is aqueous or aqueous-alcoholic.

[00262] According to another particular embodiment of the invention, C1 is an anhydrous composition. According to another variant, C2 is anhydrous. According to another variant, C3 is anhydrous. According to yet another variant, C4 is anhydrous. According to another variant, C5 is anhydrous, in particular, C1 and/or C4 are anhydrous. In particular, C4 is anhydrous, and it comprises at least one oil, notably a volatile oil such as isododecane.

[00263] The compositions C1 to C5 used in the process of the invention may also comprise one or more organic solvents.

[00264] The term “organic solvent’ means an organic substance that is capable of dissolving another substance without chemically modifying it.

[00265] Examples of organic solvents that may be mentioned include a) C2-C6 alkanols, such as ethanol and isopropanol; b) polyols that are miscible with water at room temperature (25°C), notably chosen from polyols notably containing from 2 to 10 carbon atoms, preferably containing from 2 to 6 carbon atoms, such as glycerol, propylene glycol, 1 ,3-propanediol, butylene glycol, pentylene glycol, hexylene glycol, dipropylene glycol, diethylene glycol or diglycerol; c) polyol ethers, such as 2-butoxyethanol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether or diethylene glycol monomethyl ether; and also d) aromatic alcohols, such as benzyl alcohol or phenoxyethanol, and mixtures thereof.

[00266] According to a particular embodiment, the composition also comprises one or more polyols notably chosen from polyols notably containing from 2 to 10 carbon atoms, preferably containing from 2 to 6 carbon atoms, such as glycerol.

[00267] In particular, the compositions C1 , C2, C3, C4 or C5 (preferably C2 or C3) are aqueous or aqueous-alcoholic (ethanol/water mixture in particular in a volume ratio of between 1/99 to 99/1 , more particularly between 10/90 to 90/10, even more particularly between 20/80 and 80/20, preferably 40/60 to 60/40 such as 50/50).

[00268] Compositions C1 , C2, C3, C4 or C5 may be in anhydrous, water-in-oil emulsion or oil-in-water emulsion form. The adjuvants

[00269] Compositions C1 , C2, C3, C4 or C5 used in the process of the invention may also comprise one or more adjuvants chosen from fragrances, preserving agents, fillers, free-radical scavengers, polymers, thickeners or film-forming agents, surfactants, trace elements, softeners, sequestrants and propellants.

[00270] Another subject of the invention is a composition C1 , which is preferably aqueous or aqueous-alcoholic, which comprises i) at least one compound of formula (I) or (la) and iii) optionally at least one active agent as defined previously, preferably at least one dyestuff, such as at least one pigment as defined previously; and optionally iv) one or more fatty substances as defined previously.

[00271] Another subject of the invention is a composition C2, which is preferably aqueous or aqueous-alcoholic, which comprises i) at least one compound of formula (I) or (la) as defined previously, ii) at least one crosslinking agent as defined previously and iii) optionally at least one active agent as defined previously; and optionally iv) one or more fatty substances as defined previously.

[00272] Another subject of the invention is a composition C3, which is preferably aqueous or aqueous-alcoholic, which comprises i) at least one compound of formula (I) or (la) as defined previously, ii) at least one crosslinking agent as defined previously and iii) at least one active agent as defined previously; and optionally iv) one or more fatty substances as defined previously.

[00273] Another subject of the invention is the cosmetic use of composition C1 , C2 or C3, which comprises iii) one or more cosmetic active agent(s) as defined previously and optionally iv) one or more fatty substance(s) as defined previously, notably for treating keratin materials, in particular for making up keratin materials, notably the skin such as the lips, the eyelashes or the eyebrows.

[00274] According to yet another of its aspects, the present invention is also directed toward a multi-compartment kit or device, notably a cosmetic kit or device for keratin materials, in particular for caring for and/or making up the skin and/or the lips, the eyelashes or the eyebrows, comprising:

- at least one compartment containing at least one ingredient i) of formula (I) or (la) as defined previously and optionally at least iii) one cosmetic active agent, in particular comprising composition C1 as defined previously; - at least one compartment distinct from that containing i) and containing ii) at least one crosslinking agent as defined previously, and optionally iii) at least one cosmetic active agent, in particular containing composition C4; and

- optionally, at least one compartment distinct from those comprising i) and ii) and containing iii) at least one cosmetic active agent, identical to or different from that/those optionally contained in the compartments comprising i) and ii) and as defined previously, in particular containing composition C5.

[00275] The invention is illustrated in greater detail in the examples that follow. The amounts are indicated as weight percentages.

Examples

Compound 1: KFLEX 7301 sold by Kina Industrie

[Chem. 5]:

Compound 2: Glucose containing acetoacetate functions (5 eg)

Compound 2 was synthesized according to the following scheme:

[Chem. 6]:

[00276] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -methylcarbonylmethylcarbonyl group -C(O)-CH2-C(O)-CH₃ group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CH₃.

[00277] 100 g of D-glucose and 482.90 g of tert-butyl acetoacetate are placed in a 1- liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 5 h. After 5 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A highly viscous dark brown liquid is obtained, corresponding after analysis to the expected product.

Compound 3: Mannose containing acetoacetate functions (5 eq)

Compound 3 was synthesized according to the following scheme:

[Chem. 7]

[00278] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHs group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CH₃.

[00279] 100 g of D-mannose and 482.90 g of tert-butyl acetoacetate are placed in a 1- liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 5 h. After 5 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A viscous yellow liquid is obtained, corresponding after analysis to the expected product.

Compound 4: Xylitol containing acetoacetate functions (5 eg)

Compound 4 was synthesized according to the following scheme:

[Chem. 8]

[00280] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHs group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CH₃.

[00281] 25 g of xylitol and 142.69 g of tert-butyl acetoacetate are placed in a 500 ml three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 5 h. After 5 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A highly viscous brown liquid is obtained, corresponding after analysis to the expected product.

Compound 5: Sorbitol containing acetoacetate functions (6 eg)

Compound 5 was synthesized according to the following scheme:

[Chem. 9]

[00282] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHs group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-.

[00283] 100 g of sorbitol and 573.20 g of tert-butyl acetoacetate are placed in a 1 -liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 5 h. After 5 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A viscous yellow-orange liquid is obtained, corresponding after analysis to the expected product. Compound 6: Sorbitol containing acetoacetate functions (3 eq)

Compound 6 was synthesized according to the following scheme: [Chem. 10]

[00284] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHs group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CH₃.

[00285] 100 g of sorbitol and 260.54 g of tert-butyl acetoacetate are placed in a 1 -liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 5 h. After 5 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A viscous yellow liquid is obtained, corresponding after analysis to the expected product. [00286] Compound 7 Dipentaerythritol containing acetoacetate functions (6 eq)

Compound 7 was synthesized according to the following scheme:

[Chem. 11]

[00287] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CH₃ group, it being understood that at least two radicals R1 represent -C(O)-CH₂-C(O)-CH₃.

[00288] 50 g of di pentaerythritol and 195,33 g of tert-butyl acetoacetate are placed in a

1-liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 4 h. After 4 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A viscous orange brown oil is obtained, corresponding after analysis to the expected product.

[00289] Compound 8: Sucrose containing acetoacetate functions (8 eg)

Compound 8 was synthesized according to the following scheme:

[Chem. 12]

[00290] in which scheme R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CH₃ group, it being understood that at least two radicals R1 represent -C(O)-CH₂-C(O)-CH₃.

[00291] 100 g of sucrose and 406,55 g of tert-butyl acetoacetate are placed in a 1-liter three-necked flask equipped with a mechanical stirrer and a distillation column. The reaction medium is heated using an oil bath (oil bath temperature 140°C-150°C) for 4 h. After 4 h, NMR confirmed the grafting of the acetoacetate function. The reaction medium is then concentrated on a rotavapor at 150°C under continuous vacuum. A viscous orange yellow liquid is obtained, corresponding after analysis to the expected product.

[00292] [Table 5]

Implementation of the invention

One-gesture application:

[00293] Compounds 1 to 6 of formula (I) containing acetoacetate functions and the crosslinking agents 1 to 10 are mixed together prior to application to Bioskin synthetic skin from Maprecos (Bioskin plate #10) (elastomeric skin-equivalent support). The system remains fluid long enough to allow application to the substrate. After application to a sample of Bioskin synthetic skin and evaporation of the volatile solvents, transferresistant, non-tacky deposits that are resistant to edible oils, sebum and water are obtained for application to said synthetic skin.

Two-gesture application: application of base coat A and then top coat A, or application of base coat B and then top coat B.

The composition, of the “base coat’’ type, containing a compound bearing acetoacetate functions is prepared using a Speed Mixer (2 minutes at 3500 rpm). This “base coat’’ is applied to a Bioskin type vitro support (elastomeric skin-simulating support) using a film spreader (wet thickness of 100 pm). The deposit is left to dry for 24 hours. A “top coat” composition containing a crosslinking agent is then applied. After drying for 24 hours, the deposits obtained are evaluated.

[00294] Base coat A: deposit of a compound 1 to 6 containing acetoacetate functions, alone or diluted in volatile solvents such as ethanol, water, isododecane or a mixture of isododecane/ethanol or ethanol/water. Optionally, a crosslinking agent may be introduced into this phase to perform pre-crosslinking.

OR

Base coat B: deposit of a crosslinking agent 1 to 10.

Top coat A: deposit with a crosslinking agent 1 to 10.

OR

[00295] Top coat B: deposit of a compound 1 to 6 containing acetoacetate functions, alone or diluted in volatile solvents such as ethanol, water, isododecane or a mixture of isododecane/ethanol or ethanol/water.

[00296] The base coat compositions comprising compound(s) 1 to 6 containing acetoacetate functions (base coat A) or crosslinking agent(s) 1 to 10 (base coat B) were applied to a Bioskin-type in vitro support using a film spreader (wet thickness of 100 pm). The deposit is left to dry for 24 hours.

[00297] After evaporation of the volatile solvents, the new material generated makes it possible to obtain transfer-resistant, non-tacky deposits that are resistant to edible oils, sebum and water for skin application.

Resistance to adhesive tape

[00298]A piece of adhesive tape (Scotch® Magic™ 810 from 3M; w = 19 mm, L = 5 cm) is applied to the deposit. A weight of approximately 1070 g is placed on the piece of adhesive tape for 30 seconds. The piece of adhesive tape is then removed and mounted on a slide holder so as to properly observe the result. The adhesion of the film to the support is thus evaluated.

Resistance to olive oil/water/sebum

[00299] 0.5 mL of olive oil or water is applied to the film of formulation. After 5 minutes, the olive oil, water or sebum is removed by wiping 15 times with cotton wool. The deterioration of the film following contact with the drop of attacking agent is thus examined.

Fragmentation test of the formulations on BioSkin [00300] As for the tests of resistance to olive oil and to adhesive tape, films are applied to a sample of BioSkin. After drying for one day, the BioSkin plate is removed, by hand force, 10 times.

[00301] The result may then be observed on the formulation film (fragmentation or otherwise).

[00302] For each combination, the evaluations were conducted for the base coat alone after drying and on the [Base coat] + [Top coat] system after drying.

The evaluation is made in the following manner:

+++: cosmetic property evaluated as very effective

++: cosmetic property evaluated as moderately effective

+: cosmetic property evaluated as not very effective

0: cosmetic property evaluated as ineffective

[00303] Resistance to olive oil, sebum and water

0.5 mL of olive oil or water is applied to the deposit. After 5 minutes, the olive oil or water is removed by wiping 15 times with cotton wool. The deterioration of the deposit resulting from its contact with olive oil or water is thus observed.

The resistance is evaluated according to the following scale:

+++ : no attack of the deposit, which is as it was originally;

++ : a little transfer but the deposit is as it was originally;

+ : the deposit is slightly altered and some transfer is observed;

0 : the deposit is completely degraded and there is a lot of transfer onto the cotton wool.

Example 1: Compound 1 containing ACAC functions with amino crosslinking agent 1 in ethanol - one gesture

[00304] [Table 6]:

active material Result after one-gesture application:

[00305] [Table ?]:

[00306] It is seen that the application of composition A according to the process of the invention allows the resistance to olive oil, sebum and water to be significantly improved.

In addition, the fragmentation test is significantly better than that obtained with reference composition A°.

Example 2: Molecule 1 crosslinked with amino crosslinking agent 1 in isododecane/ethanol - one gesture [OO3Q7] [Table 8]:

active material

Result after one-gesture application:

[00308] [Table 9]:

[00309] It is seen that the application of composition B according to the process of the invention allows highly effective cosmetic performance to be obtained. Example 3: Compound 1 with amino crosslinking agent 2 in aqueous-alcoholic solvent - one gesture

[00310] [Table 10]:

Result after one-gesture application:

[00311] [Table 11]:

[00312] It is seen that the application of composition C according to the process of the invention allows very effective resistance to water, olive oil and sebum to be obtained. Example 4: Compound 6 containing AC AC functions with Polyacrylate crosslinking agent 8 + catalyst - one gesture

[00313] [Table 12]:

active material

Result after one-gesture application:

[00315] It is seen that the application of composition D according to the process of the invention allows the resistance to olive oil and water to be significantly improved. In addition, the adhesive tape and fragmentation tests are significantly better than those obtained with reference composition D°.

Example 5: Compound 6 with dicarbonyl crosslinking agent 9 + catalyst - one gesture [00316] [Table 14]:

active material

Result after one-gesture application: [00317] [Table 15]:

[00318] It is seen that the application of composition E according to the process of the invention allows very effective resistance to olive oil to be obtained, and the adhesive tape and fragmentation tests are also very effective.

Example 6: Compound 3 containing AC AC functions with amino crosslinking agent 3 and then with amino crosslinking agent 6 - two gestures ] [Table 16]:

active material [00320] [Table 17]:

active material

Result after one-gesture or two-gesture application:

[00321] [Table 18]:

It is seen that the application of compositions F and then G in two gestures according to the process of the invention allows very effective resistance to olive oil and sebum to be obtained. This is also the case for the adhesive tape and fragmentation tests, which are effective.

Example 7: Compound 3 containing AC AC functions with amino crosslinking agent 3 and then with amino crosslinking agent 4 - two gestures

[00322] [Table 19]:

[00323] [Table 20]:

active material

Result after two-gesture application: [00324] [Table 21]:

It is seen that the application of compositions F and then H in two gestures according to the process of the invention allows effective resistance to olive oil and sebum to be obtained. This is also the case for the fragmentation test.

Example 8: Compound 3 containing AC AC functions with amino crosslinking agent 3 and then with thiol crosslinking agent 7 - two gestures

The process was performed as in Example 7, with a first gesture performed with composition F, except that the second gesture was performed with composition I instead of composition H.

[00325] [Table 22]:

active material

Result after two-gesture application:

[00326] [Table 23]:

Example 9: Compound 1 containing AC AC functions with amino crosslinking agent 3 and then with amino crosslinking agent 3 - two gestures

[00327] [Table 24]:

[00328] [Table 25]:

[00329] [Table 26]:

* active material

Result after one-gesture and two-gesture application: [00330] [Table 27]:

It is seen that the application of compositions J and then K in two gestures according to the process of the invention affords olive oil, sebum and water resistance that is significantly more effective than the one-gesture process using composition J°. This is also the case for the fragmentation and adhesive tape tests.

G/oss persistence

Gloss persistence test

The compositions comprising a compound containing acetoacetate functions, a crosslinking agent and a solvent are applied using an applicator to a wet thickness of 100 pm on a Leneta plate. Using a glossmeter, the gloss of the card is measured at 20°

(angle of incidence), then the gloss of the deposit is measured 2 h after application, 24 h after application, then 0.5 ml of water is applied to the deposit for 5 minutes, followed by rubbing with cotton wool (15 strokes) to measure the gloss on the affected area. Example 10: Compound 1 containing AC AC functions with an amino crosslinking agent 3

[00331] [Table 28]:

*a.m.: active material

[00332] [Table 29]:

(Gil) = gloss units

Effective persistence is found for the gloss of the film after attacking with water or after rubbing. Example 11: Compound 7 containing ACAC functions with amino crosslinking agent 10 and then with amino crosslinking agent 6 - two gestures

[00333] [Table 30]:

active material

* active material

Result after one-gesture or two-gesture application:

[00335] [Table 32]

It is seen that the application of compositions M and then N in two gestures according to the process of the invention affords olive oil, sebum and water resistance that is significantly more effective than the one-gesture process using composition M°. This is also the case for the fragmentation and adhesive tape tests.

Example 12 : Compound 7 containing ACAC functions with amino crosslinking agent 10 amine and then with amino crosslinking agent 4 - two gestures

The process was performed as in Example 11 , with a first gesture performed with composition M, except that the second gesture was performed with composition O instead of composition N.

[00336] [Table 33]

active material

Result after one-gesture or two-gesture application:

[00337] [Table 34]

It is seen that the application of compositions M and then O in two gestures according to the process of the invention affords olive oil, sebum and water resistance that is significantly more effective than the one-gesture process using composition M°. This is also the case for the fragmentation and adhesive tape tests. Exemple 13 : Compound 7 containing ACAC functions with amino crosslinking agent 10 and then with thiol crosslinking agent 7 - two gestures

The process was performed as in Example 11 , with a first gesture performed with composition M, except that the second gesture was performed with composition P instead of composition N.

[00338] [Table 35]

active material

[00339] [Table 36]

It is seen that the application of compositions M and then P in two gestures according to the process of the invention affords olive oil, sebum and water resistance that is significantly more effective than the one-gesture process using composition M°. This is also the case for the fragmentation and adhesive tape tests. Exemple 14: Compound 7 containing ACAC functions with amino crosslinking agent 1 - one gesture

[00340] [Table 37]

active material

Result after one-gesture application:

[00341] [Table 38]

It is seen that the application of composition Q in one gesture according to the process of the invention allows the resistance to olive oil and water to be significantly improved. In addition, the adhesive tape and fragmentation tests are significantly better than those obtained with reference composition Q°.

Example 15 : Compound 8 containing ACAC functions with amino crosslinking agent 1 amine - one gesture

[00342] [Table 39]

active material

Result after one-gesture application:

[00343] [Table 40]

It is seen that the application of composition R in one gesture according to the process of the invention allows the resistance to olive oil and water to be significantly improved. In addition, the adhesive tape and fragmentation tests are significantly better than those obtained with reference composition R°.

Example 16 : Compound 8 containing AC AC functions with amino crosslinking agent 10 amine and then thiol crosslinking agent 7 - two gestures The process was performed as in Example 13, except that the first gesture was performed with composition S instead of composition M, the second gesture was performed with composition P.

[00344] [Table 41]

active material

Result after one-gesture application:

[00345] [Table 42]

It is seen that the application of compositions S and then P in two gestures according to the process of the invention affords olive oil, sebum and water resistance that is significantly more effective than the one-gesture process using composition S°. This is also the case for the fragmentation and adhesive tape tests.

Example 17: Comparison between an aqueous polyvinylpyrolidone/isobornyl acrylate/2- ethylhexyl acrylate/acetoacetoxyethyl methacrylate dispersion (2/59/29/10) and compound containing AC AC functions with crosslinking agent 9 - one gesture

Preparation of an aqueous polyvinylpyrolidone/isobornyl acrylate/2-ethyl hexyl acrylate/acetoacetoxyethyl methacrylate dispersion (2/59/29/10) (Polymer 1)

5 g of Poly 1-Vinyl-2-pyrrolidinone, 150 g of ethanol, 350 g of water and 1.2 g of KPS initiator are placed in a 1 -I iter reactor. The medium is degassed with argon and then heated to 80°C with stirring (150 rpm).

Once the stock is at a temperature of 80°C, a mixture of 25 g of acetoacetoxyethyl methacrylate, 147.5 g of isobornyl acrylate and 72.5 g of 2-ethylhexyl acrylate is introduced by a one-hour pour with a controlled pump.

The polymerization is continued for 7 hours at 80° C. then allowed to cool to room temperature. Then, the reaction medium is stripped by completely distilling the ethanol.

Ultimately, the polymer is in the form of an aqueous dispersion having 43% by weight of dry extract relative to the total weight of the aqueous dispersion. The polymer in aqueous dispersion is characterized by GPC. The results are detailed in the table below.

[00346] [Table 43]

[00347] [Table 44]

Result after one-gesture application : [00348] [Table 45]

The composition according to the invention is significatively more resistant to oil than the comparative composition.

Examples 18: Comparison between an aqueous polyvinylpyrolidone/isobornyl acrylate/2- ethylhexyl acrylate/acetoacetoxyethyl methacrylate dispersion (2/59/29/10) and compound containing AC AC functions with crosslinking agent 8 - one gesture

[00349] [Table 46]

Result after one-gesture application : [00350] [Table 47]

The composition according to the invention is significatively more resistant to oil and water than the comparative composition.

Claims

[Claim 1 ] Process for treating keratin materials in one or more steps by applying to said materials: i) one or more compounds of formula (I) and also the optical or geometrical isomers thereof, the salts thereof, and the solvates thereof, such as the hydrates:

in which formula (I):

R¹ represents a linear or branched, saturated or unsaturated, conjugated or nonconjugated, acyclic or cyclic, aromatic or non-aromatic C2 to C14 polyvalent hydrocarbon-based radical,

R¹ also being: a) optionally substituted with one or more hydroxyl OH or amine -N(R)₂ groups with R representing a (Ci-C4)alkyl group such as methyl, or carboxyl -C(O)-OH, a vinyl group, and/or b) optionally interrupted with one or more heteroatoms or groups chosen from O, S, carbonyl -C(O)-, amine -N(R’), or combinations thereof, in which R’ represents a hydrogen atom, a linear or branched alkyl group containing from 1 to 4 carbon atoms optionally substituted with at least one hydroxyl group (OH), or optionally substituted with -X-C(O)-C(R_a)(Rb)-C(O)-R²;

R^a and R^b, which may be identical or different, represent a hydrogen atom or a (C1- C4)alkyl group, preferably hydrogen;

- X is a heteroatom or group chosen from O, S, N(R’) or -S-CH₂-C(O)-O-, -O-C(O)- CH₂-S-, -O-C(O)-N(R’)-, -N(R’)-C(O)-O- or -N(R’)-C(O)-N(R’)-; n denotes an integer ranging from 2 to 10, particularly ranging from 3 to 8; and ii) at least one crosslinking agent; and iii) optionally at least one cosmetic active agent.

[Claim 2] Process as claimed in the preceding claim, in which the compound(s) of formula (I) are chosen from those of formula (la) and also the optical isomers thereof, the geometrical isomers thereof, the salts thereof, and the solvates thereof, such as the hydrates:

in which formula (la):

R¹ is as defined in claim 1 , and particularly represents a linear or branched, saturated or unsaturated, conjugated or non-conjugated, acyclic or cyclic, aromatic or non-aromatic C2 to C14, in particular C3 to C12 and preferably C4 to C10 polyvalent hydrocarbon-based radical, R¹ also being: a) optionally substituted with one or more hydroxyl groups OH, and/or b) optionally interrupted with one or more heteroatoms or groups chosen from O, S, -N(R’), preferably interrupted with one or more oxygen atoms, in which R’ is as defined in claim 1 ;

R² is as defined in claim 1 , and preferably R² represents a linear or branched (C1- Ce)alkyl group, preferably a (Ci-C4)alkyl group such as methyl or t-butyl, preferably methyl; and n being as defined in claim 1 , and preferably n denotes an integer ranging from 2 to 8.

[Claim 3] Process as claimed in either of the preceding claims, in which the compound(s) of formula (I) or (la) are such that:

R¹ represents a linear or branched, unsaturated monocyclic or bicyclic, preferably monocyclic, Ce to Cs polyvalent hydrocarbon-based radical, and an aromatic radical such as phenyl, or

R¹ represents a saturated monocyclic or bicyclic C5 to C12 polyvalent hydrocarbonbased radical, optionally interrupted with one or more heteroatoms or groups chosen from O, S, -N(R’), in which R’ represents a hydrogen atom or an alkyl group containing from 1 to 4 carbon atoms, preferably interrupted with one or more oxygen atoms; preferably, R¹ represents a monosaccharide or polysaccharide unit, notably a disaccharide in which n hydroxyl groups have been substituted with n groups -O- C(O)-CH2-C(O)-R² with R² and n as defined in either of the preceding claims, or R¹ represents a linear or branched, saturated or unsaturated, preferably saturated, acyclic C2 to C12 and preferably C3-C10 polyvalent hydrocarbon-based radical; preferably R¹ represents a monosaccharide or polysaccharide unit, notably a disaccharide, in which n hydroxyl groups have been substituted with n groups -O-C(O)- CH2-C(O)-R², with R² as defined previously and n as defined previously.

[Claim 4] Process as claimed in any one of the preceding claims, in which the compound(s) of formula (I) or (la) are such that: n denotes an integer ranging from 2 to 8, and more particularly n denotes an integer ranging from 3 to 6, more particularly from 3 to 5.

[Claim 5] Process as claimed in any one of the preceding claims, in which the compound(s) of formula (I) or (la) are chosen from the following compounds, and also the optical isomers thereof, the salts thereof, and the solvates thereof, such as hydrates :

in which R1 , which may be identical or different, represents a hydrogen atom or a -C(O)-CH2-C(O)-CHS group, it being understood that at least two radicals R1 represent -C(O)-CH2-C(O)-CHs, preferably at least three radicals R1 represent - C(O)-CH₂-C(O)-CH₃, more preferentially, the compounds chosen from (18), (41) and (44) more preferentially, the compounds are chosen from (18), (21), (38), (41), (44) and (50) and better still (21), (38) (41), (44) and (50), even more preferentially, the compounds are chosen from (18), (21), (38), (41) and (44), even better still (21), (38), (41) and (44), advantageously, the compounds are chosen from (18), (21), (41) and (44) and more advantageously (21), (41) et (44).

[Claim 6] Process as claimed in any one of the preceding claims, in which the crosslinking agent(s) ii) are chosen from:

(poly)amine, (poly)thiol, (poly)carbonyl, (poly)acrylate and/or metal alkoxide compounds, and mixtures thereof, and preferably chosen from (poly)amine, (poly)thiol and (poly)acrylate compounds and mixtures thereof.

[Claim 7] Process as claimed in any one of the preceding claims, in which the crosslinking agent(s) are chosen from:

(poly)amine compounds chosen from a) chitosans, such as poly(D-glucosamine), b) polyether diamines, particularly polyethylene glycol a,w-diamines (bearing an amine function at the end of the chain) and 4, 7, 10-trioxa-1 ,1 -tridecanediamine, c) polyether triamines, such as polyetheramines (or Jeffamine), d) aminoalkoxysilanes, such as APTES, and e) polydialkylsiloxanes comprising primary amine groups at the end of the chain or on side chains, in particular polydimethylsiloxanes comprising primary amine groups, such as bis(3-aminopropyl)-terminated poly(dimethoxysiloxane) (PDMS-diNH2) and amodimethicones comprising amine groups on side chains, such as bis-cetearyl amodimethicone; and

(poly)thiol compounds chosen from a) polydialkylsiloxanes bearing thiol functions, and b) alkoxysilanes bearing thiol functions, and in particular are chosen from a) polydialkylsiloxanes bearing thiol functions, preferentially polydimethylsiloxanes comprising thiol groups on the side chain (such as mercaptopropyl), notably those of formula (XIII)

. R^a and R^b are as defined in formula (XI) and R^d is as defined for R^a and R^b, preferably R^a, R^b and R^d, which are identical, represent a (Ci-Ce)alkyl group, such as methyl;

. R^d may also represent a (Ci-Ce)alkyl group substituted with a (Ci-C4)alkylamino or amino or thiol group, preferably (Ci-C4)alkyl such as methyl;

. ALKi represents a linear or branched, optionally cyclic, saturated or unsaturated divalent hydrocarbon-based chain comprising from 1 to 100 carbon atoms, optionally interrupted with one or more heteroatoms such as oxygen, sulfur or nitrogen (in particular O), a (thio)carbonyl group C(X) with X representing O or S, or combinations thereof such as -O-, -O-C(O)- or -C(O)-O-; preferably, ALKi represents a (Ci-Ce)alkylene and more preferentially (Ci-C4)alkylene group such as propylene;

. n and m, which may be identical or different, representing an integer greater than 2 and more particularly the values of m and n are such that the weight-average molecular weight of said polyorganosiloxane is between 1000 and 55 000 g.mol’¹;

- (poly)acrylate of formula (XIV): L[-Y-C(O)-C(R^e)=CH₂]_q (XIV) in which formula (XIV):

. q represents an integer greater than or equal to 2; preferably, n is between 2 and 10 and preferably between 2 and 5 inclusive;

. L denotes a linear or branched, saturated or unsaturated, or (hetero)cyclic, saturated or unsaturated, multivalent (at least divalent) group, in particular comprising between 1 and 500 carbon and/or silicon atoms, more particularly between 2 and 40 carbon and/or silicon atoms, even more particularly between 3 and 30 carbon and/or silicon atoms, preferably between 6 and 20 carbon atoms;

L being optionally interrupted and/or terminated with one or more heteroatoms or groups chosen from O, S, N, Si, C(X), and combinations thereof such as -O-, -O- C(X)-, -N(R)-C(X)-, -Si(R_c)(Rd)-O- with R representing a hydrogen atom or a (Ci- Ce)alkyl group such as methyl; and/or

L being optionally substituted with one or more groups chosen from:

-N(R_a)Rb and -(X’)_a-C(X)-(X”)_b-R_a; with X, X’ and X”, which may be identical or different, representing an oxygen or sulfur atom, or a group N(R_b); a and b being equal to 0 or 1 ; preferably, the sum of a + b is equal to 1 ; R_a and Rb, which may be identical or different, represent a hydrogen atom or a (Ci- Ce)alkyl or aryl(Ci-C4)alkyl group, such as benzyl, preferably R_a and Rb represent a hydrogen atom; and R_c and Rd, which may be identical or different, represent a (Ci- Ce)alkyl, aryl(Ci-C4)alkyl or (Ci-Ce)alkoxy group;

. R^e represents a hydrogen atom or a (Ci-C4)alkyl group such as methyl; preferably, R^e represents a hydrogen atom; and

. Y representing an oxygen atom or an amino group -N(H)-, preferably O being as defined previously, preferably Y = O and R^e = H, preferably L represents a di- or trivalent, preferably trivalent, hydrocarbon-based chain comprising from 1 to 8 carbon atoms, q is 2 or 3, preferably 3, Y represents O, and R^e represents a hydrogen atom; preferably, the compounds of formula (XIV) are trimethylolpropane triacrylate.

[Claim 8] Process as claimed in any one of the preceding claims, which uses iii) one or more cosmetic agent(s) chosen from a) dyestuffs such as pigments, direct dyes and mixtures thereof, b) active agents for caring for keratin materials, preferably the skin, c) UV-screening agents, and d) mixtures thereof; preferably, the at least one cosmetic agent is chosen from dyestuffs, preferably chosen from pigments, direct dyes and mixtures thereof; more preferentially, the pigment(s) of the invention are chosen from carbon black, iron oxides, notably yellow, red and black iron oxides, and micas coated with iron oxide, triarylmethane pigments, notably blue and violet triaryl methane pigments such as Blue 1 Lake, azo pigments, notably red azo pigments such as D&C Red 7, alkali metal salts of lithol red such as the calcium salt of lithol red B, even more preferentially red iron oxides, yellow iron oxides and azo pigments, notably red azo pigments such as D&C Red 7.

[Claim 9] Process as claimed in any one of the preceding claims, which uses iv) one or more fatty substances, in particular one or more oils, preferably volatile oils.

[Claim 10] Process as claimed in any one of the preceding claims, which uses iv) one or more volatile oil(s) chosen from: hydrocarbon-based oils containing from 8 to 16 carbon atoms, and notably:

- branched Cs-Ci6 alkanes, for instance isoalkanes such as Cn-C isoparaffin isoalkanes, isododecane, isodecane and isohexadecane, alone or as mixtures, preferably isododecane, more preferentially isododecane;

- volatile, non-aromatic cyclic C5-C12 alkanes;

* silicone oils comprising in particular from 2 to 7 silicon atoms, these silicone oils optionally including alkyl or alkoxy groups containing from 1 to 10 carbon atoms, such as dimethicones of viscosity 5 and 6 cSt, cyclopentadimethylsiloxane, dodecamethylpentasiloxane, cyclohexadimethylsiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof; more preferentially, the volatile oil(s) iv) are chosen from Cs-Ci6 alkanes, notably branched alkanes such as isododecane.

[Claim 11] Process as claimed in any one of the preceding claims, in particular for caring for and/or making up the skin, the lips, the eyelashes and/or the eyebrows, which uses: a composition, termed “C1”, comprising i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5 and optionally iii) at least one cosmetic active agent as defined in either of claims 1 and 8; a composition, termed “C2”, comprising i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5 and ii) at least one crosslinking agent as defined in any one of claims 1 , 6 or 7 and optionally iii) at least one active agent as defined in either of claims 1 and 8; a composition, termed “C3”, comprising i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5, ii) at least one crosslinking agent as defined in any one of claims 1 , 6 or 7 and iii) at least one cosmetic active agent as defined in either of claims 1 and 8; and/or a composition “C4” comprising ii) at least one crosslinking agent as defined in any one of claims 1 , 6 or 7 and optionally iii) at least one cosmetic active agent as defined in either of claims 1 and 8; a composition “C5” comprising iii) at least one cosmetic active agent as defined in either of claims 1 and 8 and hereinbelow; it being understood that:

. the process uses, together or separately, i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5 and ii) at least one crosslinking agent as defined in any one of claims 1 , 6 or 7; and

. compositions C1 , C2, C3, C4 and C5 may be anhydrous, aqueous such as aqueous-alcoholic and/or may comprise one or more fatty substances iv) as defined in claim 9 or 10.

[Claim 12] Process as claimed in claim 11 , which is performed in one gesture by applying composition C2 or C3 as defined in claim 11 to keratin materials.

[Claim 13] Process as claimed in claim 11 , which is performed in two gestures by successive application, to the keratin materials, of two different compositions for example C1 and C4, or C2 and C4, or C3 and C4, preferably C1 then C4, C2 then C4, or C3 then C4 as defined in claim 11 .

[Claim 14] Process as claimed in claim 11 , which is performed in three gestures by successive applications, to the keratin materials; either a) of a composition C1 , then P) of a composition C4, then y) of a composition C5 as defined in claim 11 , preferably C1 then C4 or, respectively, C5 then C5 or, respectively, C4; or a) of a composition C4, and ) of a composition C1 or C2, and then y) of a composition C5 as defined in claim 11 ; preferably, composition C4 is applied before composition C1.

[Claim 15] Process as claimed in claim 11 or 13, which is a process for making up keratin materials, in particular the skin, notably the lips, the eyelashes or the eyebrows, comprising the sequential application: of a composition C1 as defined in claim 11 ; and then of a composition C4 as defined in claim 11 ; it being understood that compositions C1 and/or C4 contain at least one dyestuff as defined in claim 8, preferably at least one pigment; more preferentially, composition C1 comprises at least one pigment; or of a composition C1 as defined in claim 11 ; and then of a composition C4 as defined in claim 11 ; and then of a composition C5 as defined in claim 11 ; it being understood that compositions C1 and/or C4 and/or C5 contain at least one dyestuff as defined in claim 8, preferably at least one pigment; more preferentially, composition C5 comprises at least one pigment.

[Claim 16] Composition C1 , as defined in claim 11 , which is preferably aqueous or aqueous-alcoholic, which comprises i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5 and iii) optionally at least one active agent as defined in claim 1 or 8, preferably at least one dyestuff, such as at least one pigment; and optionally iv) one or more fatty substances as defined in claim 9 or 10.

[Claim 17] Composition C2 as defined in claim 11 , which is preferably aqueous or aqueous-alcoholic, which comprises i) at least one compound of formula (I) or (la) as defined in any one of claims 1 to 5, ii) at least one crosslinking agent as defined in any one of claims 1 , 6 or 7 and iii) optionally at least one active agent as defined in claim 1 or 8; and optionally iv) one or more fatty substances as defined in claim 9 or 10.

[Claim 18] Composition C3 as defined in claim 11 , which comprises iii) one or more cosmetic active agent(s) as defined in claim 1 or 8 and optionally iv) one or more fatty substance(s) as defined in claim 9 or 10.

[Claim 19] Cosmetic use of composition C1 , C2 or C3 as claimed in claims 16 to 18, notably for treating keratin materials, in particular for making up keratin materials, notably the skin, such as the lips, the eyelashes or the eyebrows.

[Claim 20] Multi-compartment kit, notably a cosmetic kit, comprising:

- at least one compartment containing at least one ingredient i) of formula (I) or (la) as defined in any one of claims 1 to 5 and optionally at least iii) a cosmetic active agent as defined in either of claims 1 and 8, in particular comprising composition C1 as defined in claim 11 ; - at least one compartment distinct from that containing i) and containing ii) at least one crosslinking agent as defined in any one of claims 1 , 6 and 7, optionally iii) at least one cosmetic active agent as defined in either of claims 1 and 8, in particular containing composition C4 as defined in claim 11; and - optionally, at least one compartment distinct from those comprising i) and ii) and containing iii) at least one cosmetic active agent as defined in either of claims 1 and 8, which may be identical to or different from that/those optionally contained in the compartments comprising i) of formula (I) or (la) as defined in any one of claims 1 to 5 and ii) at least one crosslinking agent as defined in any one of claims 1 , 6 and 7.