FR2903893A1 - Method useful for making-up dark skin involves applying to skin, cosmetic composition of red interference pigment in medium, where after application, composition generate highlights with high intensity and specific dominant wavelength - Google Patents

Abstract

Making-up dark skin involves applying to the skin a cosmetic composition (C1) comprising at least one red interference pigment in a medium, in which when the composition is applied to the skin, it generates highlights with an intensity of >= 3000 cd.m -> 2> and a dominant wavelength of 580-650 nm. Independent claims are included for the following: (1) a makeup composition (C2) comprising at least one colorant, and at least one red interference pigment in a medium, where when the composition is applied to the skin, it generates highlights with an intensity of >= 3000 cd.m -> 2> and a dominant wavelength of 580-650 nm; and (2) a set of at least two cosmetic compositions (C1), where the saturation difference between two compositions of the set is = 2, the red interference pigment in the two compositions is at concentrations that differ by at least 1%.

Description

1 The present invention relates to cosmetic compositions and more

particularly makeup compositions for the skin, lips or integuments. It is known practice to incorporate diffusing pigments in makeup compositions, the color of which is sensitive to an external stimulus, also called Xchromes, X denoting the external factor. They may be, for example, photochromic, thermochromic, solvatochromic or tribochromic pigments. The invention aims to produce new makeup effects. The subject of the invention, according to one of its aspects, is a cosmetic composition comprising, in a cosmetically acceptable medium: - at least one red interference pigment capable of generating, when the composition is applied to a support, highlights with an intensity greater than or equal to 3000 cd m-2 and with a dominant wavelength between 580 and 680 nm, - at least one coloring agent sensitive to at least one external stimulus. The combined use of the red interference pigment and the Xchrome coloring agent makes it possible to obtain at least two different appearances for the composition, depending on the state of the Xchrome coloring agent. In particular, it may be aesthetically pleasing that in one of its states, the Xchrome coloring agent turns red because this may decrease the contrast of the red highlight dots and make them less visible. The change in state of the Xchrome coloring agent is then accompanied by a better perception of the red highlight points and the observer may be surprised to see the interference pigment shine intensely. The Xchrome coloring agent can also, by changing state, influence the diffusion of light in the environment of the red interference pigment by acting as a color filter or locally as a secondary illumination source. The Xchrome coloring agent can be chosen in an exemplary embodiment of the invention so as to assume at least two states in which the interference phenomenon is affected and is not or is affected to different degrees. . The coloring agent sensitive to an external stimulus can be in solution in the medium, which can be the case for example for a solvatochrome agent. This can make it possible to avoid scattering of light by the Xchrome agent and to weaken the phenomenon of interference. 2903893 2 It may prove to be particularly advantageous for the red interference pigment to have a size of between 30 gm and 80 m, that is to say substantially of the same order as the separating power of the eye, more preferably around 40 m and that the agent Xchrome coloring takes on a red color in a state. A mat red background can then be obtained with highlight dots which appear to sparkle due to their particular size, which creates a shimmering effect. Measuring the Intensity of the Highlighting Points To measure the intensity of the highlighting points, the composition studied is spread out on a contrast card, for example of the LENETA brand, over a thickness of 10,300 m. The composition thus spread is placed in front of a colorimetric camera 1 according to the arrangement shown in FIG. 1. In this figure, it can be seen that the contrast card 2 coated with the composition is placed perpendicular to the optical axis X of the camera 1. and that the illumination is effected by means of a light source 4 (illuminant 15 D65) emitting in a direction making an angle of 5 with the optical axis X. The highlight is defined as the light intensity emitted so localized. The camera has a resolution in the xy plane of a few m, sufficient to very clearly differentiate the different particles present in the composition. The optical system is for example the photometer and the imaging colorimeter LUMICAM 1300 from the company INSTRUMENT SYSTEM. Luminance measurements can be carried out in the range 0.2 to 200,000 cd.m 2 with a measurement precision of 4%, a repeatability of 0.1% and a uniformity of 1.5% (for an area of 10 x 10 pixels). The optical system comprises a 105 mm macro lens having a field angle of 5, a focal length of 22 mm, placed at a distance of 48 cm from the composition. The measurement area extends over 2.9 x 2.7 mm. The sensitivity is 100 iso, the shutter speed is 1 / 60s and the aperture is f: 2. The illustrated experimental set-up eliminates specular reflection on the film surface of the composition. 2903893 3 The result obtained is in the form of a two-dimensional matrix where each element Mii represents the intensity detected by the cell with coordinates i, j in the xy plane, in candela per m2, M, M, m- M m, n 5 where : m denotes the number of pixels in the x direction of the detection system, and n denotes the number of pixels in the y direction of the detection system. The dominant wavelength is measured with the imaging colorimeter. Red interference pigment This pigment is able, according to the invention, to generate highlights with a dominant wavelength between 580 nm and 650 nm, better still 580 nm and 600 nm, and with an intensity greater than or equal to 3 000 cd.m 2, better 3,400 cd.m2, even better 4,200 cd m-2. The intensity may be less than 5,000 cd.m-2. Preferably, the size of this pigment, defined by the average particle size distribution at half of the population, also called D50, is greater than or equal to 30 m, better 40 m, for example between 30 and 80 m, better 30 and 70 m. The pigment advantageously has a generally flattened shape, its thickness being for example less than or equal to 5 m, preferably less than or equal to 3 m. The multilayer structure may or may not be symmetrical, preferably being symmetrical. The pigment may comprise a core of an organic or inorganic material, covered with one or more layers of organic or inorganic materials. The pigment may for example comprise a core of silica, of mica or of glass, coated with a layer of iron oxide Fe2O3 or of another metal oxide, for example an oxide of titanium or of tin. 2903893 4 The thickness of the layer or layers covering the core will be determined by the theory of the reflection of light on the thin layers, so that the reflected light has the desired dominant wavelength. Preferably, the core is of generally flattened shape and the pigment has substantially planar main faces, so as to allow intense specular reflection. The pigment may, where appropriate, exhibit a non-zero magnetic susceptibility. As an example of a commercially available red interference pigment, mention may be made of that marketed under the reference XIRONA LE ROUGE by the company MERCK. Xchrome Coloring Agent As mentioned above, the Xchrome coloring agent can be chosen so as to assume at least one state in which it generates a red color or close to that produced by interference by the red interference pigment or on the contrary a different color. By close color, it should be understood that the dominant wavelength is substantially the same, being between 580 nm and 650 nm, measured with the aforementioned imaging colorimeter. The Xchrome coloring agent can also be chosen so as to take in a state a color close to that generated by absorption by the surface layer of the interference pigment. This can allow the interference pigment to be embedded in the background color in order to then draw the viewer's attention to the red highlight dots when the state of the coloring agent changes. They can be photochromic coloring agents. Photochromic coloring agents In general, a photochromic coloring agent is a coloring agent having the property of changing color when it is or is not illuminated by ultraviolet light and of restoring its initial color when it is no longer. whether or not it is illuminated by a light or else to switch from a non-colored state to a colored state and vice versa. In other words, such an agent has different shades depending on whether it is illuminated by light containing a certain amount of UV radiation. The photochromic coloring agent can assume a substantially uncolored state in the presence of low light, so that the intensity of the red highlight dots is not unduly attenuated by the photochromic coloring agent. In the presence of strong light, the photochromic coloring agent may take on a colored state, for example a dark shade or a red color, attenuating the intensity of the red highlight dots, which may thus appear less bright than. presence of weak lighting. This effect can surprise the observer and make makeup particularly attractive. The photochromic coloring agent may exhibit a difference AE at least equal to 10 5. AE denotes the difference in color observed at the level of the photochromic material between its excited state, that is to say in the presence of UV irradiation. and its non-excited state, that is to say in the absence of UV irradiation. Reference may usefully be made to the examples of photochromic agents described in US 2004/0228818, the content of which is incorporated by reference, in particular those exhibiting an AE greater than 5, in accordance with the test presented in this document. Examples of photochromic coloring agents include naphthopyran derivatives of the 2H-naphtho- [2,1-b] -pyran type of formula (I) or 3H-naphtho- [2,1-b] -pyran, of formula (II): R (I) 20 in which: R1 represents: - (i) a hydrogen atom; - (ii) a hydrocarbon group having 1 to 30 carbon atoms, linear branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P, and / or optionally halogenated or perhalogenated ; 2903893 6 - (iii) a hydrocarbon-based ring formed with one of the “f 'or“ gh ”bonds and the radical R7; or - (iv) a group chosen from -COOR4, -C (0) NR2R3, -NR2R3, -OR4 and - SR4, in which: 5 - R2 and R3 either represent, independently of one another, a linear, branched or cyclic, saturated or unsaturated hydrocarbon group having 1 to 20 carbon atoms, optionally comprising 1 with 5 heteroatoms chosen from N, O, S, Si and P, or taken together with the nitrogen atom to which they are attached, form a hydrocarbon heterocycle, saturated or unsaturated, comprising 3 to 10 carbon atoms and 10 optionally 1 with 5 other heteroatoms chosen from N, O, S, Si and P, said ring being optionally substituted by at least one hydrocarbon radical having 1 to 20 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms selected from N, O, S, Si and P; R4 represents a hydrocarbon group having 1 to 20 carbon atoms, 15 lin eary, branched or cyclic, saturated or unsaturated, optionally halogenated or perhalogenated, and / or optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P; R5 and R6 represent, independently of one another, a group chosen from: - (i) saturated cyclic aminoaryl groups of formula (IIA) or (IIB): 20 in which the ring comprising N and X is a ring saturated which comprises in total 3 to 30 atoms including nitrogen, the remainder being carbon atoms and / or heteroatoms chosen from O, S, Si, P and / or groups chosen from -NH and -NR 2903893 7 with R representing a hydrocarbon radical having 1 to 20 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P; - (ii) indolinoaryl groups of formula (III): R8 5 (III) in which Rio and Rii represent, independently of one another, a group chosen from (i) hydrocarbon groups having 1 to 30 atoms of carbon, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P, and / or optionally halogenated or perhalogenated; (ii) halogen atoms; (iii) the -CN (nitrile), -COOH (carboxylate), -NO2 (nitro) groups; (iv) a hydrogen atom; (v) a group selected from - C (0) NR2R3, -NR2R3, -OR4 or -SR4 with R2, R3 and R4 having the meanings given above; (vi) the radicals Rio and Ri i possibly together forming a saturated or unsaturated hydrocarbon-based ring having in total 5 to 8 atoms (including the atoms of the indoline ring), said 15 atoms being chosen from C, O, S and / or NR with R representing H or a hydrocarbon radical having 1 to 20 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P, - (iii) groups of formula (IV): 2903893 8 in which m and p are, independently of one another, integers ranging from 2 to 5; - (iv) unsaturated cyclic aminoaryl groups of formulas (VA), (VB) or (VC): (VA) 5 (VB) 0-ô R8 (VC) in which R8 and R9 represent, independently one of the other, a group chosen from (i) hydrocarbon groups having 1 to 30 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 10 to 5 heteroatoms chosen from N, O, S, Si and P , and / or optionally halogenated or perhalogenated; (ii) halogen atoms; (iii) the -CN (nitrile), -COOH (carboxylate), -NO2 (nitro) groups; (iv) a hydrogen atom; (v) a group selected from - C (0) NR2R3, -NR2R3, -OR4 or -SR4 with R2, R3 and R4 having the meanings given above; 15 - (v) a hydrocarbon group having 1 to 30 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms 2903893 9 chosen from N, O, S, Si and P; and in particular a group chosen from CONR2R3, - C6H4-NR2R3 and -C6H4-OR4 with R2, R3 and R4 having the meanings given above; R7 represents a group chosen from: - (i) hydrocarbon groups having 1 to 30 carbon atoms, linear, 5 branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P , and / or optionally halogenated or perhalogenated; - (ii) halogen atoms; - (iii) -CN (nitrile), -COOH (carboxylate), -NO2 (nitro) groups; - N = N- (azo); = NH (imino); -CONH2 (amide); - (iv) a hydrogen atom; - (v) a group chosen from -C (0) NR2R3, -NR2R3, -OR4 or -SR4 with R2, R3 and R4 having the meanings given above; - (vi) the radical R7 possibly also forming, with one of the bonds "i", "j", "k", or "g, h" taken with the radical R1, or "f 'taken with the radical R1, a saturated hydrocarbon-based ring having in total 3 to 8 carbon atoms, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P; R ′ 1 represents a group chosen from: - (i) an atom of hydrogen; - (ii) a hydrocarbon-based group having 1 to 30 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P, and / or optionally halogenated or perhalogenated; - (iii) a group chosen from -C (0) NR2R3, -NR2R3, -OR4 and -SR4, with R2, R3 and R4 having the meanings given above; R'2 represents a group chosen from: 25 - (i) hydrocarbon groups having 1 to 30 carbon atoms, linear, branched or cyclic, saturated or unsaturated, optionally comprising 1 to 5 heteroatoms chosen from N, O, S, Si and P, and / or optionally halogenated or perhalogenated; - (ii) halogen atoms; - (iii) -CN (nitrile), -COOH (carboxylate), -NO2 (nitro) groups; N = N- (azo); = NH (imino); -CONH2 (amide); - (iv) a hydrogen atom; 2903893 10 - (v) a group selected from -C (0) NR2R3, -NR2R3, -OR4 or -SR4 with R2, R3 and R4 having the meanings given above. As examples of photochromic agents, mention may also be made of diarylethene, of formula and its derivatives, dihydroazulene / vinylhepta fulvene, of formula and its derivatives, spyronaphthoxazine, of formula R N N and its derivatives. The photochromic agent can be an organic or inorganic compound. When the photochromic agent is an organic compound, the color change can generally be faster and more intense. As examples of photochromic agents, mention may be made of Photosol from the company PPG, which reversibly changes color when activated by UV radiation with a wavelength of between 300 and 360 nm, Reversacol from J. ROBINSON company and Photogenica from CATALYST & CHEMICALS. Thermochromic agents A thermochromic agent is a pigment or dye which can change color with temperature. The thermochromic agent, for example, exhibits a color which is lost when the temperature exceeds a certain value, for example approximately 15 ° C. or approximately 30 C., depending on the nature of the thermochromic agent. The thermochromic agent may comprise capsules of a polymer containing a solvent, this solvent allowing, depending on its being molten or not, for compounds to come into contact and to modify the absorption properties of the light radiation. The color change can be reversible. One can for example use the thermochromic agent marketed under the reference Kromafast Yellow5GX 02 by the company KROMACHEM LTD, or else 10 Chromazone in powder or dispersion, Thermobatch or Thermostar, from the company CHROMAZONE. Piezochromic and tribochromic agents A piezochromic agent is liable to change color in the presence of mechanical force. As examples of piezochromic agents, there may be mentioned diphenylflavylene. A tribochrome agent is liable to change color in the presence of mechanical force, in a more durable manner than in the case of piezochromic agents. Reference may be made to publication WO 94/26729, the content of which is incorporated by reference. Mechanoluminescent Agents These agents are capable of emitting light when they receive mechanical stress such as compression, shear or friction. The mechanoluminescent agent is preferably in the form of a particle which is insoluble in the cosmetic medium. The average particle size is for example between 0.01 and 50 m, preferably between 0.1 and 10 m. As mechanoluminescent materials, mention may be made of: a) lanthanide complexes and chelates such as those described in publications US Pat. No. 6,071,632, US 2002/0015965 and WO 09/016429, the contents of which are incorporated by reference. The rare earths are preferably chosen from europium, terbium, samarium and dysprosium. In these materials, diketones are used as a ligand for the trivalent lanthanide salts. These materials in an organic medium [?]. 2903893 12 b) Aluminates, silicates and aluminosilicates doped with rare earth ions as described in publications US Pat. No. 6,280,655, EP 1,318,184, JP 2002/194349, JP 2004/59746, the contents of which are incorporated by reference , especially (Sr, Mg, Ba, Zn, Ca) Al2O4, (SrLa, SrY) A13O7 (Sr2, SrMg, SrCa, SrBa) A16O11, 5 Sr2 (Mg, Al) (Al, Si) SiO7, Sr (Zn, Mn, Fe, Mg) Si2O6. The items shown in parentheses are partially or fully interchangeable. Rare earth ions such as cerium, europium, samarium, neodymium, gadolinium, disprosium and terbium can be used, alone or as a mixture. Europium and disprosium are preferred. C) Zinc sulfide, manganese sulfide, copper sulfide, cadmium sulfide or zinc oxide, optionally doped with transition metal ions or rare earth ions as described in US publications. 6,117,574 and JP 2004/43656, the contents of which are incorporated by reference. The transition metal ions are preferably copper or manganese. The rare earth ions are preferably europium or cerium. Of these materials, ZnS: Mn is preferred. The materials listed under b) and c) can be synthesized by a solid phase reaction involving dry mixing followed by heat treatment and high temperature sintering or by a sol-gel process followed by drying, heating and sintering. The sintering temperature is for example greater than 1000 ° C. The materials listed under b) are preferred. Of these, SrAl2O4 and SrMgAl10O17 doped with rare metals are preferred. SrAl2O4 mechanoluminescent pigments doped with rare metal ions are sold under the reference TAIKO-M1-1 by the company TAIKO Refractories Co., Ltd. The particles of this pigment have a diameter of between 5 and 10 m and a green luminescence under low mechanical stress. Solvatochrome agents A solvatochrome agent is liable to change color in the presence of solvents. The dye DC Red27 is an example, this compound exhibiting in an anhydrous formulation an absence of color and the addition of water revealing a pink color. Cosmetically acceptable medium The term “cosmetically acceptable medium” denotes a non-toxic medium capable of being applied to the keratin materials of human beings. The cosmetically acceptable medium will be suited to the nature of the support to which the composition must be applied and to the form in which the composition is intended to be packaged. The composition according to the invention can comprise an aqueous medium and / or a fatty phase. Aqueous or fatty phase The composition may comprise water or a mixture of water and hydrophilic organic solvents such as alcohols and in particular linear or branched lower monoalcohols having from 2 to 5 carbon atoms such as ethanol, isopropanol or n-propanol, polyols such as glycerin, diglycerin, propylene glycol, sorbitol, pentethylene glycol, polyethylene glycols. The hydrophilic phase may further contain C2 ethers and hydrophilic C2-C4 aldehydes. Water or the mixture of water and hydrophilic organic solvents can be present in the composition according to the invention in a content ranging from 0% to 90%, in particular 0.1% to 90% by weight, relative to the total weight of the composition, and preferably from 0% to 60% by weight, in particular 0.1% to 60% by weight. The composition may also comprise a fatty phase, in particular consisting of fatty substances which are liquid at 25 ° C. and optionally of fatty substances which are solid at room temperature, such as waxes, pasty fatty substances, gums and mixtures thereof. As fatty substances that are liquid at room temperature, often called oils, which can be used in the invention, mention may be made, inter alia, of vegetable hydrocarbon oils such as liquid triglycerides of fatty acids of 4 to 10 carbon atoms such as triglycerides of heptanoic acids. or octanoic, or sunflower, corn, soybean, grape seed, sesame, apricot, macadamia, castor, avocado, triglycerides, caprylic / capric acid oil, jojoba, shea butter; linear or branched hydrocarbons, of mineral or synthetic origin such as paraffin oils and, in particular C8-C16 isoparaffins such as isododecane, isodecane, isohexadecane, petrolatum, polydecenes, polyisobutene hydrogenated such as Parléam, squalane; synthetic esters and ethers, in particular of fatty acids 2903893 14 such as, for example, Purcellin oil, isopropyl myristate, 2-ethylhexyl palmitate, 2-octyl-dodecyl stearate, octyl-2-dodecyl erucate, isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octylhydroxystearate, octyldodecyl hydroxystearate, diisostearylmalate, triisoketyl citrate, fatty alcohol heptanoates, octanoates, decanoates; polyol esters such as propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate; and esters of pentaerythritol; fatty alcohols having from 12 to 26 carbon atoms such as octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol; partially hydrocarbon-based and / or silicone-based fluorinated oils; silicone oils such as polymethylsiloxanes (PDMS) which may or may not be volatile, linear or cyclic, liquid or pasty at room temperature, such as cyclomethicones, dimethicones, optionally comprising a phenyl group, such as phenyl trimethicones, phenyltrimethylsiloxydiphenyl siloxanes, diphenylmethyldimanes diphenyl dimethicones, phenyl dimethicones, polymethylphenyl siloxanes; their mixtures. These oils can be present in a content ranging from 0.01 to 90% relative to the total weight of the composition. The composition according to the invention can also comprise one or more organic solvents, physiologically acceptable. This or these solvent (s), which may be lipophilic, may be present in a content ranging from 0 to 90%, better still from 0 to 60% by weight, relative to the total weight of the composition and even better still from 0.1 to 30%. %. The medium can comprise a liquid organic phase in which water is dispersed or emulsified. The composition may also have a continuous fatty phase, which may contain less than 5% water, in particular less than 1% water relative to its total weight and in particular be in anhydrous form. Film-forming agent The medium may comprise a film-forming agent, in particular a film-forming polymer. The term “film-forming agent” means an agent capable of forming, on its own or in the presence of an auxiliary film-forming agent, a macroscopically continuous film which adheres to keratin materials, and preferably a cohesive film, and better still a film whose thickness. cohesion and the mechanical properties are such that said film can be isolated and handled in isolation, for example when said film is produced by casting on a non-stick surface such as a Teflon or silicone surface. The composition may have an aqueous phase and the film-forming polymer may be present in this aqueous phase. This can be a polymer in dispersion or in solution. The composition may comprise an oily phase and the film-forming polymer may be present in this oily phase. The polymer can then be in dispersion or in solution. Among the film-forming polymers which can be used, mention may be made of synthetic polymers, of radical type or of polycondensate type, polymers of natural origin, and mixtures thereof. The free-radical type film-forming polymers can in particular be vinyl polymers or copolymers, in particular acrylic polymers. Among the film-forming polycondensates, mention may be made of polyurethanes, polyesters, polyester amides, polyamides, and epoxyester resins, polyureas. Polyesters can be obtained, in a known manner, by polycondensation of dicarboxylic acids with polyols, in particular diols. Polyesters amides can be obtained analogously to polyesters, by polycondensation of dibasic acids with diamines or amino alcohols. By way of example of liposoluble film-forming polymers, mention may be made of vinyl ester copolymers (the vinyl group being directly linked to the oxygen atom of the ester group and the vinyl ester having a saturated, linear or branched hydrocarbon radical. , from 1 to 19 carbon atoms, bonded to the carbonyl of the ester group) and at least one other monomer which may be a vinyl ester (different from the vinyl ester already present), an α-olefin (having 8 to 28 carbon atoms), an alkyl vinyl ether (whose alkyl group has 2 to 18 carbon atoms), or an allylic or methallyl ester (having a saturated, linear or branched hydrocarbon radical, from 1 to 19 carbon atoms, linked to the carbonyl of the ester group). These copolymers can be crosslinked using crosslinkers which can be either of the vinyl type, or of the allylic or methallyl type, such as tetraallyloxyethane, divinylbenzene, divinyl octanedioate, divinyl dodecanedioate, and octadecanedioate. of divinyl. As examples of these copolymers, mention may be made of the copolymers: vinyl acetate / allyl stearate, vinyl acetate / vinyl laurate, vinyl acetate / vinyl stearate, vinyl acetate / octadecene, vinyl acetate / octadecyl vinyl ether, vinyl propionate / allyl laurate, vinyl propionate / vinyl laurate, vinyl stearate / octadecene-1, vinyl acetate / dodecene-1, vinyl stearate / ethyl vinyl ether, vinyl propionate / cetyl vinyl ether, stearate vinyl / allyl acetate, 2-dimethyl, 2 vinyl octanoate / vinyl laurate, 2-dimethyl, 2 allyl pentanoate / vinyl laurate, 15 vinyl dimethyl propionate / vinyl stearate, allyl dimethyl propionate / vinyl stearate, vinyl propionate / vinyl stearate, crosslinked with 0.2% divinyl benzene, vinyl dimethyl propionate / vinyl laurate, crosslinked with 0.2% divinyl benzene, vinyl acetate / octadecyl vinyl ether, crosslinked with 0.2% tetraallyloxyethane, vinyl acetate / d stearate allyl, crosslinked with 0.2% divinyl benzene, vinyl acetate / octadecene-1 crosslinked with 0.2% divinyl benzene and allyl propionate / allyl stearate crosslinked with 0.2% divinyl benzene . The film-forming polymer can also be chosen from silicone resins, generally soluble or swellable in silicone oils, which are crosslinked polyorganosiloxane polymers. The film-forming polymer may also be present in the composition in the form of particles dispersed in an aqueous phase or in a non-aqueous solvent phase, generally known under the name of latex or pseudolatex. The techniques for preparing these dispersions are well known to those skilled in the art. The composition according to the invention may comprise a plasticizer promoting the formation of a film with the film-forming polymer. Such a plasticizer can be chosen from all the compounds known to those skilled in the art as being capable of fulfilling the desired function. 2903893 17 Of course, this list of polymers is not exhaustive. Other Coloring Agents The composition may comprise one or more diffusing pigments, in a proportion which makes it possible to retain the interference phenomenon responsible for the red highlights. Various diffusing pigments can be envisaged, being for example chosen from lakes or organic pigments selected in particular from the materials below and their mixtures: - cochineal carmine, - organic pigments of azo, anthraquinone, indigo, xanthenic dyes, pyrenics, quinolinics, triphenylmethane, fluoran, - organic lakes or insoluble salts of sodium, potassium, calcium, barium, aluminum, zirconium, strontium, titanium, acid dyes such as azo dyes , anthraquinonics, indigoids, xanthenics, pyrenics, quinolinics, triphenylmethane, fluoran, these dyes possibly comprising at least one carboxylic or sulfonic acid group. Among the organic pigments, mention may in particular be made of those known under the following names: D&C Blue n 4, D&C Brown n 1, D&C Green n 5, D&C Green n 6, D&C Orange n 4, D&C Orange n 5, D&C Orange n 10 , D&C Orange n 20 11, D&C Red n 6, D&C Red n 7, D&C Red n 17, D&C Red n 21, D&C Red n 22, D&C Red n 27, D&C Red n 28, D&C Red n 30, D&C Red n 31, D&C Red n 33, D&C Red n 34, D&C Red n 36, D&C Violet n 2, D&C Yellow n 7, D&C Yellow n 8, D&C Yellow n 10, D&C Yellow n 11, FD&C Blue n 1, FD&C Green n 3, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6. The lacquer may be supported by an organic support such as rosin or aluminum benzoate, for example. Among the organic lakes, mention may in particular be made of those known under the following names: D&C Red n 2 Aluminum lake, D&C Red n 3 Aluminum lake, D&C Red n 4 Aluminum lake, D&C Red n 6 Aluminum lake, D&C Red n 6 30 Barium lake, D&C Red n 6 Barium / Strontium lake, D&C Red n 6 Strontium lake, D&C Red n 6 Potassium lake, D&C Red n 7 Aluminum lake, D&C Red n 7 Barium lake, D&C Red n 7 Calcium lake, D&C Red n 7 Calcium / Strontium lake, D&C Red n 7 2903893 18 Zirconium lake, D&C Red n 8 Sodium lake, D&C Red n 9 Aluminum lake, D&C Red n 9 Barium lake, D&C Red n 9 Barium / Strontium lake, D&C Red n 9 Zirconium lake, D&C Red n 10 Sodium lake, D&C Red n 19 Aluminum lake, D&C Red n 19 Barium lake, D&C Red n 19 Zirconium lake, D&C Red n 21 Aluminum lake, D&C Red n 21 5 Zirconium lake, D&C Red n 22 Aluminum lake, D&C Red n 27 Aluminum lake, D&C Red n 27 Aluminum / Titanium / Zirconium lake, D&C Red n 27 Barium lake, D&C Red n 27 Calcium lake, D&C Red n 27 Zirconium lake, D&C Red n 28 Aluminum lake, D&C Red n 30 lake, D&C Red n 31 Calcium lake, D&C Red n 33 Aluminum lake, D&C Red n 34 Calcium lake, D&C Red n 36 lake, D&C Red n 40 Aluminum lake, 10 D&C Blue n 1 Aluminum lake, D&C Green n 3 Aluminum lake, D&C Orange n 4 Aluminum lake, D&C Orange n 5 Aluminum lake, D&C Orange n 5 Zirconium lake, D&C Orange n 10 Aluminum lake, D&C Orange n 17 Barium lake, D&C Yellow n 5 Aluminum lake, D&C Yellow n 5 Zirconium lake, D&C Yellow n 6 Aluminum lake, D&C Yellow n 7 Zirconium lake, D&C Yellow n 10 Aluminum lake, FD&C Blue n 1 15 Aluminum lake, FD&C Red n 4 Aluminum lake, FD&C Red n 40 Aluminum lake, FD&C Yellow n 5 Aluminum lake, FD&C Yellow n 6 Aluminum lake. The chemical materials corresponding to each of the organic coloring materials mentioned above are mentioned in the work International Cosmetic Ingredient Dictionnary and Handbook, Edition 1997, pages 371 to 386 and 524 to 528, 20 published by The Cosmetic, Toiletry, and Fragrance Association, of which the content is incorporated herein by reference. The diffusing pigment can be a composite pigment, comprising a core at least partially coated with a shell. Such a composite pigment can be composed in particular of particles comprising an inorganic core and at least one at least partial coating of at least one organic coloring material. At least one binder can advantageously contribute to the attachment of the organic coloring material to the inorganic core. The composite pigment particles can have various shapes. These particles may in particular be in the form of platelets or globular, in particular spherical, and be hollow or solid. The term “platelet-shaped” denotes particles whose ratio of greatest dimension to thickness is greater than or equal to 5. A composite pigment may, for example, have a specific surface area of between 2,903,893 19 1 and 1000 m2 / g, in particular between 10 and 600 m2 / g approximately, and in particular between 20 and 400 m2 / g approximately. The specific surface is the value measured by the BET method. The proportion by weight of the core can exceed 50% relative to the total weight of the composite pigment, for example ranging from 50% to 70%, for example from 60% to 70%. The diffusing pigment can also be an inorganic pigment, in particular a mother-of-pearl or a reflective particle with a metallic sheen. The other coloring agent (s) can also be chosen from effect pigments, in particular goniochromatic pigments and diffracting pigments, or dyes. The dyes can be fat soluble or water soluble. It may be a dye of plant, animal or mineral origin, in particular of plant or mineral origin, in particular of plant origin. This dye can be of a non-synthetic nature. The dye can be a water-soluble or fat-soluble natural dye. By way of illustration of the water-soluble natural coloring agents capable of being used according to the invention, mention may be made in particular of caramel, beetroot juice and carmine, betanin (beet), copper-colored chlorophyllin, honey blue. methylene, anthocyanins (enocianin, black carrot, hibiscus, elderberry) and riboflavin. By way of illustration of the liposoluble natural coloring agents capable of being used according to the invention, there may be mentioned in particular Sudan red, (3-carotene, carotenoids, lycopene, palm oil, brown Sudan, quinoline yellow, xanthophylls (capsanthin, capsorubin, lutein), and curcumin. As other natural dyes, mention may more particularly be made of anthocyanins of flowers or of fruits or their derivatives, flavonoids and tannins extracted from native plants or fermented, juglone, lawsone, extracts of fermented soybean, algae, fungi, microorganisms, Flavylium salts unsubstituted in position 3 as described in patent EP 1 172 091, extracts of Gesneria Fulgens, Blechum Procerum, Saxifraga and the pigments obtainable by extraction with an organic or hydro-organic solvent from a culture medium of micromycetes of the monascus type Monascus. synthetic dyes, mention may be made of synthetic fat-soluble dyes such as, for example, DC Red 17, DC Red 21, DC Red 27, DC Green 6, DC Yellow 11, DC Violet 2 and DC Orange 5 As examples of synthetic water-soluble dyes, mention may be made of FDC 5 Red 4, DC Red 6, DC Red 22, DC Red 28, DC Red 30, DC Red 33, DC Orange 4, DC Yellow. 5, DC Yellow 6, DC Yellow 8, FDC Green 3, DC Green 5 and FDC Blue 1. Fillers The cosmetic composition may include fillers. The term “fillers” denotes particles of any form which are insoluble in the medium of the composition, regardless of the temperature at which the composition is manufactured. These fillers can be used in particular to modify the rheology or the texture of the composition. By way of example of fillers, mention may be made, inter alia, of talc, mica, silica, kaolin, and polyamide powders (Nylon or Orgasol from Atochem). The filler content will be chosen so as not to unduly hamper the interference phenomenon responsible for the red highlights. Actives and Other Compounds The cosmetic composition can also contain one or more cosmetic, dermatological, hygienic or pharmaceutical active agents. As cosmetic, dermatological, hygienic or pharmaceutical active ingredients which can be used in the compositions of the invention, mention may be made of moisturizers (polyol such as glycerin), vitamins (C, A, E, F, B, or PP), essential fatty acids, essential oils, ceramides, sphingolipids, liposoluble sun filters or in the form of nanoparticles, specific active agents for treating the skin (protective, anti-bacterial, anti-wrinkle agents, etc.). These active agents can be used, for example, at concentrations of 0.001 to 15% relative to the total weight of the composition. The cosmetic composition can also

contain ingredients commonly used in cosmetics, such as, for example, thickeners, surfactants, trace elements, moisturizers, softeners, sequestering agents, perfumes, alkalinizing or acidifying agents, preservatives, antioxidants, UV filters , or their mixtures.

Depending on the type of application envisaged, the cosmetic composition may also comprise the constituents conventionally used in the fields considered, which are present in an amount suitable for the desired galenic form. Dosage forms The cosmetic composition can be in any dosage form normally used for topical application and in particular in anhydrous form, in solid or semi-solid form, in the form of an oily or aqueous solution, of an oily or aqueous gel. , an oil-in-water or water-in-oil emulsion, a multiple emulsion, a dispersion of oil in water thanks to vesicles located at the oil / water interface, d 'a spray, as long as you keep the red highlighting points. The cosmetic composition may constitute, among other makeup products, a lipstick, a liquid gloss, a lipstick paste, a blush, a foundation, an eye contour product, a makeup base, eyeliner, mascara, nail polish, eye shadow, body or hair makeup product. The composition of the invention can be obtained according to the preparation processes conventionally used in cosmetics. Packaging and Methods of Application The composition can be packaged in any receptacle or on any support provided for this purpose. The composition according to the invention can be in the form of a solid, semi-solid, liquid, paste or more or less fluid cream. The composition can be applied using an applicator, flocked or not, for example a foam, a tip, a brush, a felt, a spatula, a frit, a brush, a comb, a woven or non-woven. The application can also be carried out with the finger or by depositing the composition directly on the support to be made up, for example by friction or spraying or projection using a piezoelectric device or by transferring a layer of composition beforehand. deposited on an intermediate support.

The composition can be applied, for example, with a thickness of, for example, between 1 and 10 m.

The application of the composition is carried out, for example, with a mass density of between 1 and 5 mg / cm2. The composition can, where appropriate, be applied as a base coat (base coat) covered with a layer of another composition (top coat) or as a coating layer on a layer of another composition, or even between a layer of another composition. base coat and a coating coat. Makeup process The present invention also relates to a makeup process consisting in applying, by means of at least one cosmetic composition, to the keratin materials, at least one red interference pigment capable of generating, after application, highlight points with an intensity greater than or equal to 3000 cd.m 2 and with a dominant wavelength between 580 and 650 nm and at least one coloring agent sensitive to at least one external stimulus. The red interference pigment and the coloring agent sensitive to at least one external stimulus can be applied via the same composition. The red interference pigment and the coloring agent sensitive to at least one external stimulus can also be applied via two different compositions respectively containing the red interference pigment and the coloring agent sensitive to at least one external stimulus.

Kit The subject of the present invention is also a make-up kit comprising: a first composition comprising, in a cosmetically acceptable medium, at least one red interference pigment capable of generating, when the composition is applied to a support, highlights. with an intensity greater than or equal to 3000 cd.m 2 and with a dominant wavelength between 580 and 650 nm, - a second composition comprising, in a cosmetically acceptable medium, at least one coloring agent sensitive to at least one external stimulus. Suggested Examples The contents indicated are by weight.

2903893 23 Example 1 (Nail varnish incorporating a photochromic agent) Nitrocellulose 11 N-ethyl o, p-toluenesulfonamide 5 Alkyd resin 10 Isopropanol 4 Colored interference pigment * 2 Photochromic coloring agent ** 3 Butyl acetate / ethyl acetate 50 / 50 Qsp 100 * Red interference pigment with a silica core coated with iron oxide Fe2O3 available from the company MERCK under the reference XIRONA LE ROUGE. ** Reversacol from the James Robinson company.

5 Red highlight dots are revealed by switching from daylight type lighting to artificial lighting. Example 2 (Nail polish incorporating a thermochromic agent) Nitrocellulose 11 N-ethyl o, p-toluenesulfonamide 5 Alkyd resin 10 Isopropanol 4 Colored interference pigment * 2 Thermochromic coloring agent ** 3 Butyl acetate / ethyl acetate 50/50 Qsp 100 * Idem Example 1. ** Thermostar from the company CHROMAZONE, changing state at a temperature of the order of 20 C. Below this, the coloring agent is colorless. Above 20 ° C., the coloring agent becomes red and a shimmering effect appears. Example 3 (Lipstick incorporating a solvatochrome agent) Octyl-2 dodecanol 10 Ditertiobutyl 4-hydroxytoluene 0.07 Polybutene (monoolefins / isoparaffins 95/5) (MW: 2060) 50 Mixture of isopropyl p-hydroxybenzoates, isobutyl , n-butyl 0.4 (40/30/30) 2903893 24 Pentaerythrityl tetra-iso-stearate 11.33 Tridecyl tri-mellitate 13 2-decyl tetradecanoic acid triglyceride (GUERBET C24) 13 Colored interference pigment * 2 Xchrome coloring agent ** 0.2 * Same as example 1. ** DC RED27 On contact with saliva, the coloring agent becomes pink, which creates a harmony of colors with the red highlight points.

Of course, the invention is not limited to the examples which have just been given. The expression comprising one is synonymous with comprising at least one and between and is understood to be limits included.

Claims (24)

1. Cosmetic composition comprising, in a cosmetically acceptable medium: at least one red interference pigment capable of generating, when the composition is applied to a support, highlights of intensity greater than or equal to 3000 cd.m 2 and of length of dominant wave between 580 and 650 nm, at least one coloring agent sensitive to at least one external stimulus. 2. Composition according to claim 1, the coloring agent sensitive to at least one external stimulus being able to take, in a state, a red color with a dominant wavelength of between 580 and 650. 3. Composition according to claim 2, this state corresponding to the presence of the stimulus. 4. Composition according to claim 2, this state corresponding to the absence of the stimulus. 5. Composition according to any one of claims 1 to 4, the highlighting points being of an intensity greater than or equal to 3400 cd.m 2. 6. Composition according to any one of claims 1 to 5, the highlighting points being of an intensity less than or equal to 5000 cd.m-2. 7. Composition according to any one of claims 1 to 6, the dominant wavelength of the red highlighting points being between 580 nm and 600 nm. 8. Composition according to any one of the preceding claims, the red interference pigment being the only coloring agent present in the composition, apart from the coloring agent (s) sensitive to the external stimulus. 9. Composition according to any one of claims 1 to 8, the size of the red interference pigment being between 30 m and 80 m. 10. Composition according to any one of claims 1 to 8, the size of the red interference pigment being greater than or equal to 30 m, better still 40 m. 11. Composition according to any one of claims 1 to 10, the red interference pigment comprising an inorganic core. 12. Composition according to claim 11, the core being made of silica, glass or mica. 2903893 26 13. Composition according to any one of the preceding claims, the interference pigment comprising a surface layer of a metal oxide. 14. The composition of claim 13, the metal oxide comprising iron oxide Fe2O3. 5 15. Composition according to any one of claims 1 to 14, the coloring agent sensitive to an external stimulus being in solution in the medium. 16. Composition according to any one of claims 1 to 14, the coloring agent sensitive to an external stimulus being dispersed in particulate form in the medium. 10 17. Composition according to any one of claims 1 to 16, the coloring agent sensitive to an external stimulus being a photochromic agent. 18. Composition according to any one of claims 1 to 16, the coloring agent sensitive to an external stimulus being a thermochromic agent. 19. A composition according to any one of claims 1 to 16, the coloring agent sensitive to an external stimulus being a solvatochrome agent. 20. Composition according to any one of claims 1 to 16, the coloring agent sensitive to an external stimulus being piezochrome or tribochrome or mechanoluminescent. 21. Make-up process consisting in applying, by means of at least one cosmetic composition, to keratin materials, at least one red interference pigment capable of generating, after application, highlights of intensity greater than or equal to. 3000 cd.m_2 and with a dominant wavelength between 580 and 650 nm and at least one coloring agent sensitive to at least one external stimulus. 22. Method according to the preceding claim, the red interference pigment and the coloring agent sensitive to at least one external stimulus being applied by means of the same composition. 23. The method of claim 21, the red interference pigment and the coloring agent sensitive to at least one external stimulus being applied via two different compositions respectively containing the red interference pigment and the coloring agent sensitive to at least one stimulus. outside. 24. Make-up kit comprising: 5 2903893 27 a first composition comprising, in a cosmetically acceptable medium, at least one red interference pigment capable of generating, when the composition is applied to a support, highlights of greater or equal intensity. at 3000 cd.m 2 and with a dominant wavelength of between 580 and 650 nm, a second composition comprising, in a cosmetically acceptable medium, at least one coloring agent sensitive to at least one external stimulus.