FR2951078A1 - Photonic particles, useful e.g. in a cosmetic composition, and for coloring and/or brightening, and modifying the spectral reflectance of human keratin materials, comprises hollow nanoparticles having diffraction arrangement - Google Patents

Abstract

The present invention relates to a photon particle (1), of average size between 1 and 500 microns, in particular between 1 and 300 microns, comprising a diffractive arrangement of hollow nanoparticles (10).

Description

The invention relates to photonic particles as well as compositions and methods for treating human keratin materials. BACKGROUND The present photoprotective compositions use in combination various filtering agents, including soluble or insoluble organic filters. The absorption spectrum of each of these filters is rarely wide enough to cover the entire UV spectrum and associations are needed. Moreover, a large number of soluble organic filters can pose compatibility problems with usual ingredients of the compositions containing them, especially because of interactions with other organic filters or with active molecules such as antioxidants or vitamins , and may be of not entirely satisfactory photostability. Solving this problem is the subject of many patents, revealing how much this problem is recurrent. It is known from the application WO 06/136724 to use monodisperse particles capable of forming a network and having optical filtering properties in the UVB, UVA and infrared. In this application, the particles must be organized on the skin. In J. Wang, Polym Int 57: 509-514, 2008, the authors made monodisperse PMM.A spheres of different diameters (95, 114, 134, 142 and 150 nm). Each diameter corresponds to a reflection maximum (250, 280, 330, 350, 380 min) when the particles are organized in a network. The application WO 08/007267 describes the use of hollow particles capable of organizing into a photonic crystal for applications in make-up and photoprotection vis-à-vis the UV.

US Pat. No. 6,894,086 describes various compositions comprising photonic particles, in particular colored or reflecting electromagnetic radiation out of the visible spectrum. However, there is no mention of photonic particles comprising hollow nanoparticles. Applications US 2003/0116062 and US 2006/002875 do not describe a photon particle comprising hollow nanoparticles. The A. Stein publication (Dear Mater 2002, 14, 3305-3315) discloses photon particles having a reflection band in the UVA spectrum. long (374 night).

There remains a need to benefit from materials, perfect safety, inert to the environment, photostable and non-photoreactive, not posing a problem of compatibility with other constituents of the compositions containing them, not modifying negatively the mechanical properties of the packaging materials, not releasing nanoparticles and transparent to visible light, for photoprotection with respect to solar UV radiation, for the coloration and / or the lightening and / or the modification of the reflectance spectral of a substrate. The object of the invention is to achieve all or part of these objectives. The subject of the invention is a photonic particle, of average size between 1 and 500 μr, in particular between 1 and 300 μtut, comprising one. diffractive arrangement of hollow nanoparticles. According to another of its aspects, a subject of the invention is also a method for photoprotecting human keratin materials with respect to solar UV radiation, a process for coloring and / or lightening human keratin materials, a method for process for modifying the spectral reflectance of human keratin materials, each of these processes comprising the step of applying a cosmetic composition comprising a dispersion of photonic particles, with an average size of between 1 and 500 μm, in particular between 1 and 500 μm. and 300 μm, having a diffractive arrangement of hollow nanoparticles. According to yet another of its aspects, the invention relates to a cosmetic composition comprising a dispersion of photonic particles, of average size between 1 and 500 μiii, in particular between 1 and 300 tetra, comprising a diffractive arrangement of hollow nanoparticles. For the purposes of the invention, the term "diffracting arrangement" refers to a set of particles or voids that diffract the incident light so as to filter the UV and / or to produce a coloration and / or a lightening and / or a modification of the reflectance. spectral, depending on the applications. The use of hollow nanoparticles in the photonic particles according to the invention has the advantages of amplifying the optical effects by a higher index difference compared with photonic particles comprising aggregated non-hollow nanoparticles while allowing to obtain a zero porosity, thus limiting the impact of the medium in which they are dispersed on their optical properties The composition used in the photoprotection method according to the invention has for example an SPF index of at least 10, better 15, better at least 30, 45 or 60. The Sun Protection Screen Factor (SPF) is defined in the article "A new substrate to measure sunscreen protection, factors throughout the ultraviolet spectrum, J. Soc., Cosmet Chem. 40, 127-133 (May / Dune 1989) The formulation of the composition is for example chosen such that the composition has a transmission factor of less than or equal to 70%, 60%. 40%, 30%, 20%, 10%, 5% or even better at 1%, for at least one wavelength in the range 250-400 nm. better for the whole of this beach. Filtration is all the better as the transmission factor is low in the 250-400 nm range. Photonic particles Photonic particles are, in the context of the invention, also called opals. The photonic particles may have a form factor of less than 2, especially less than 1.75. The form factor designates. when the particle is oblong, the ratio of its greatest longitudinal dimension to its largest transverse dimension. The photonic particles can be spherical, of form factor then taken equal to 1. A form factor of less than 2 can have an advantage in terms of surface coverage, compared to flat particles that can be superimposed. The average size of the photonic particles may be between 1 and 500 μm, better still between 1 and 300 μm. By "average size" is meant the statistical size distribution at half of the population, called D (0.5). The mass content of photonic particles may be between 0.1 and 20%, preferably between 1 and 10%, relative to the total mass of the composition, before application.

The photonic particles may be solid or hollow.

The photonic particles according to the invention comprise hollow nanoparticles, aggregated without matrix or aggregated or dispersed within any type of matrix, for example dispersed within a thermo matrix. electro or photocure. FIG. 1 shows a photonic particle 1 comprising hollow nanoparticles 10 aggregated without a matrix. FIGS. 2 and 3 show a photonic particle 1 comprising aggregate nanoparticles 10 aggregated, respectively dispersed, within a matrix 20. The photonic particles according to the invention can for example be manufactured from hollow nanoparticles by following the methods following manufacturing. A first manufacturing method comprises for example a microwave irradiation step. as described in S-H Kim et al, TAOS, 2006, 128, 10897-10904. A second manufacturing method may, as described in the S-M Yang publication, Langmuir 2005, 21, 10416-10421, include a step of aggregating SiO 2 nanoparticles or polystyrene under electrospray. A third method is described in the publication "Ordered macroporous titanium photonic balls by micrometer-scale spherical assembly templating" of Li et al, J. Mater. Photonic particles may also comprise hollow nanoparticles aggregated or dispersed within a matrix, Several methods, in addition to the processes mentioned above, may be suitable for the manufacture of these photonic particles, in particular, the process for aggregating SiO 2 particles in a silicon matrix, described in Honeywell application US2003 / 01.48088, A second method can, as described in D. Pine, Langmuir 2005, 21, 6669-6674, include a aggregation step from a PMMA nanoparticle emulsion The hollow nanoparticles may be as described below.

Photonic particles of the type {anu The photonic particles may be of the Janus type, that is to say comprise at least one other diffracting arrangement of nanoparticles, or even at least two other diffracting arrangements, the arrangements each having their own optical properties, especially different diffraction spectra. When the photonic particles comprise several diffracting arrangements, at least one arrangement comprises hollow nanoparticles and at least one other arrangement comprises nanoparticles that can be solid or hollow. In this case, each arrangement may for example cover a part of the UV spectrum, so as to obtain an extended photoprotection. Photonic particles having a plurality of diffracting arrangements can be obtained as taught in the S-II publication Kim et al. Adv.Mater. 2008, 9999, 1-7 or the publication "Paterned colloidal photonic dome-s and balls derived from viscous photocurable suspensions" by Kim et al., Adv.Matter 2008, 20, 3211-3217. When the photonic particles are used at least in part for their color properties, particularly for the homogenization of the complexion, the nanoparticle arrangements, when illuminated by white light, can produce respective different colors; the arrangements can in particular produce red, green and / or blue, thus making it possible to obtain a large number of colors and in particular white by additive synthesis of the reflected light. An arrangement has a reflected red color, for example when the reflectance in the visible spectrum is at least 50% in the wavelength range from 620 to 700 nm, for an observation angle of between 30 and 150 ° . For green, the range of wavelength considered ranges from 490 to 550 nm and for blue from 410 to 490 nm. The arrangements may diffract light through respective different areas of the photon particle, for example two opposite areas, for example two diametrically opposite hemispherical areas in the case of a spherical photon particle. Mixture of Photonic Particles The composition according to the invention may comprise a single type of photonic particles or a mixture of several different types of photonic particles, for example having respective reflection peaks centered on different wavelengths located in the visible range. or UV.

The composition may for example comprise a mixture of a type of photonic particles comprising hollow nanoparticles and another type of photon particles comprising nanoparticles which may be solid or hollow. The composition may for example comprise a mixture of a type of photonic particles comprising hollow nanoparticles and a thermo, electro or photocrosslinkable matrix and another type of photonic particles not comprising a thermo, electro or photocrosslinkable matrix. Nanoparticles The nanoparticles of the photonic particles can have an average size of between 100 and 500 nm, better still between 100 and 300 nm. By "average size" is meant the statistical particle size at half of the population, called D (0.5). The shape of the nanoparticles can be spherical. The nanoparticles can be monodisperse at 15% or better. The term "monodisperse x%" qualifies according to the invention particles whose average size has a coefficient of variation CV less than or equal to x%. The coefficient of variation CV is defined by the relation s being the standard deviation of the size distribution of the particles and D the mean size thereof. The average size D and the standard deviation s can be measured on 250 particles by analysis of an image obtained by means of a scanning electron microscope, for example that of reference S-4500 from HITACHI. An image analysis software can be used to facilitate this measurement, for example the Winroo software, marketed by Mitani Corporation, preferably the coefficient of variation of the monodisperse nanoparticles is less than or equal to 10%, better equal to 7%, or even more preferably less than or equal to 5%, being for example substantially of the order of 3.5% or less.The hollow nanoparticles comprise a core and a bark.The bark of the nanoparticles may be monomaterial or The bark of the nanoparticles may be inorganic and for example comprise at least one oxide, in particular a metal oxide, chosen, for example, from silica, oxides of silica, iron, titanium, aluminum or chromium. zinc, copper, zirconium, cerium and mixtures thereof.

The bark of the nanoparticles may also comprise a metal, in particular titanium, silver, gold, aluminum, zinc, iron, copper and their mixtures and alloys. The bark of the nanoparticles may comprise an organic compound, or even be entirely organic. Among the materials that may be suitable for producing organic nanoparticles, mention may be made of polymers, in particular with a carbon or silicone chain, for example polystyrene (PS), polymethyl methacrylate (PMMA), polyacrylamide (PAM), silicone polymers , NAD ("non-aqueous dispersion") such as rigid NAD which, for example consist of 96.7% methyl methacrylate and 3,3% ethylene glycol dimethacrylate crosslinked at 20% in isododecane, diameter of particles: 41 min (Q = 0.14 polydispersity) or 90% methyl methacrylate and 10% allyl methacrylate, particle diameter: 170 nm or 100% methyl dimethacrylate, particle diameter: 1.38 nm ( polydispersity Q = 0.15) or allyl methylmethacrylate polymethacrylate, poly lactic acid (PLA), poly lactic acid-glycolic acid (PLAGA), celluloses and their derivatives. polyurethane, polycaprolactone, latex form, chitin, composite materials of chitin. The glass transition temperature (Tg) of the bark of the organic nanoparticles may be greater than 40 ° C, and more preferably greater than 60 ° C. The bark of the nanoparticles may for example be PS and the particles may for example be aggregated within an organic matrix. The bark of the nanoparticles may for example be PS and the particles may for example be dispersed within a thermo, electro or photocrosslinkable organic matrix. The core of the hollow nanoparticles may consist of air or a gas other than air in order to benefit from a different refractive index, for example CO 2, N 2, butane or isobutane. The presence of air or another gas inside the hollow nanoparticles can make it possible to obtain a large difference in refractive index between the nanoparticles and the surrounding medium, which is favorable in terms of intensity. of the diffraction peak.

The difference in refractive index at a wavelength diffracted between the heart and the bark may be greater than or equal to 0.4. Said diffracted wavelength may be between 250 and 800 nm, for example between 250 and 400 nm. The ratio between a larger dimension of the core and a larger dimension of the nanoparticle can be between 0.5 and 0.8. The core volume of the hollow nanoparticle can represent between 10 and 80%, preferably between 20 and 60%, of the total volume of the hollow nanoparticle. The thickness of the bark of the hollow nanoparticles, taken equal to the half-difference of the largest dimension of the nanoparticle and the largest dimension of the core of the nanoparticle, may be between 50 and 200 dwarf, for example between 30 and 100 nm. Among the hollow nanoparticles that can be used include the nanoparticles of the company JSR SX866 (B) of 280 nm. The core of the nanoparticles may optionally comprise a sunscreen or a mixture of sunscreens. Matrix The photonic particles may comprise hollow, aggregated or dispersed nanoparticles within any type of matrix, for example dispersed within a thermo, electro or photocrosslinkable matrix.

The matrix can be organic or inorganic. Among the organic matrices, mention may be made, without limitation, of acrylic matrices: poly (methyl methacrylate) (PMMA) or polyacrylamide (FAM), polyethylene terephthalate (PET), polystyrene (PS) matrices, polycaprolactone polyvinylacetate, polyvinylethylacetate, the waxes having a melting point greater than 65 ° C., for example greater than 75 ° C., and a high hardness greater than 5 MPa and better still greater than 6 MPa. In particular, the matrix may be thermally crosslinkable, photocurable or electrically crosslinkable. By "photocrosslinkable matrix" is meant a matrix whose crosslinking is induced and / or assisted by light radiation, especially UV radiation.

By "thermo-renewable matrix" it is necessary to understand a matrix whose crosslinking is induced and / or assisted by a heat input, for example bringing the matrix to a temperature greater than 60 ° C. By "electrocurable matrix" it is necessary to understand a matrix whose the crosslinking is induced and / or assisted by the application of an electric field. The interest of using an organic matrix thermo, electro or photocrosslinkable, including thermo or photocrosslinkable. lies in the possibility of playing on the distance between the nanoparticles contained in the matrix in order to vary the optical properties of the photonic particle. This distance may be a function of the weight fraction of nanoparticles dispersed in the organic matrix, before photo, electro or thermreaction especially before photo or thermocure. Said weight fraction is equal to the ratio of the weight of the nanoparticles / weight of the matrix before photo, electro or thermocure. A matrix can be both thermo and photocrosslinkable.

The photonic particles comprise hollow nanoparticles which can be dispersed within a thermo, electro or photocrosslinkable matrix. The thermo, electro or photocrosslinkable matrix may be organic. Among the crosslinkable organic matrices, mention may be made, without limitation, of: photocrosslinkable polymers such as ETPA (Ethoxylated TrimethylolPropanetriAcrylate), PEGDA (polyethylene glycol diacrylate), acrylic resins, PEU diacrylates, the materials described in FR 2 833 487 copolymers, described in FR 2 848 428, which cross-link by polycycloaddition, of polyvinyl acetate or polyvinylethyl acetate and of styrylpyridiniums of R 'N where R represents the hydrogen atom, an alkyl or hydroxyalkyl group, and R' represents the hydrogen atom or an alkyl group, - cinnamic acid derivatives such as polyvinylcinnamate and PDMS cinnamate, - reactive silicones, described in patent FR 2 910 286, that is to say: - the polyorganosiloxanes having siloxane units of the formula: Si3-n, in which R is a monovalent hydrocarbon group, 2 linear or cyclic, having from 1 to 30 carbon atoms e, m is 1 or 2 and R 'is an unsaturated aliphatic hydrocarbon group having 2 to 10 carbon atoms or an unsaturated cyclic hydrocarbon group having 5 to 8 carbon atoms, and / or the polyorganosiloxanes having at least one alkylhydrogensiloxane unit of formula: ## STR1 ## where R is a linear or cyclic monovalent hydrocarbon group having from 1 to 30 carbon atoms or a phenyl group and p is 1 or 2, and thermoplastic polymers, thermally crosslinkable, electrically crosslinkable. The crosslinking of the matrix may be a chemical crosslinking, for example using succinimides as described in application WO 2007082061 A2. For photocurable matrices requiring a photoinitiator, the photoinitiator is chosen, for example, from the following list: DMPA (dimethoxyphenylaceto phenone), 2-Benzyl-2- (dimethylamino) -1- [4- (4-morpholino phenyl) 1-butanone sold under the trade name '' Irgacure '' 369 by Gihax, 44'-bis (diethylamino) benzophenone marketed by Sigma-Aldrich® 3, 2-hydroxy-4 '- (2-hydroxyethoxy) -2- methylpropiophenone sold by Sigma-Aldriche, 2-benzyl-2- (dimethylamino) -4'-morpholinobutyrophenone sold by Sigma-Aldrice, phenylbis (2,4,6-trimethylbenzoyl) phosphine oxide marketed by Sigma-Aldrich, Isopropyl-thioxanthone sold by Sigma-Aldrich® and camphorolactone For example, PEG diacrylates may crosslink with a photoinitiator such as camphorolactone Among the inorganic matrices, mention may be made, for example, of metal oxides, and in particular the matrices in SiO2, TiO2, ZrO or the matrix The medium containing the photonic moieties can be contained in a cosmetically acceptable medium. that is to say a non-toxic medium that can be applied to the keratin materials of human beings. especially the skin, mucous membranes or integuments. This medium is adapted to the nature of the support on which the composition is to be applied and to the form in which the composition is intended to be packaged. The medium may comprise a liquid phase at 25 ° C, containing the photonic particles. The medium may be chosen so as to promote the dispersion of the photonic particles in the medium before the application thereof. to avoid aggregation of photonic particles. For example, one or more agents can be used to reduce the surface tension of the medium containing the photonic particles to less than 35rN / M. The medium may be aqueous, the photonic particles may be contained in an aqueous phase. By "aqueous medium" is meant a liquid medium at room temperature. and atmospheric pressure which contains a significant fraction of water relative to the total weight of the medium. The complementary fraction may contain or consist of cosmetically acceptable organic solvents, miscible with water. for example, alcohols or alkylene glycols. The mass content of water of the aqueous medium is for example greater than or equal to 30%, better still 40%, even better 50%.

The medium may be monophasic or multiphasic. The medium may comprise an alcohol, such as ethanol or isopropanol, for example, or a derivative of glycol, especially ethylene glycol or propylene glycol. The medium can be transparent or translucent, and colored or not. The medium containing the photonic particles may contain no pigment or dye. The coloration of the medium may correspond to the addition of an additional coloring agent. The medium may comprise a volatile solvent. For the purposes of the invention, the term "volatile solvent" means any liquid capable of evaporating on contact with the keratin materials at ambient temperature and under atmospheric pressure. The medium can in particular be chosen so that the composition contains at least 5%, or even at least 30% of volatile solvent. The medium may comprise a film-forming polymer improving the remanence of the protection.

Filamentary Polymer In the present invention, the term "film-forming polymer" means a polymer capable of forming on its own or in the presence of an auxiliary filtering agent, a macroscopically continuous and adherent film on keratin materials, and preferably a cohesive film, and more preferably a film whose cohesion and mechanical properties are such that said film can be isolatable and manipulable 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 comprise an aqueous phase and the film-forming polymer may be present in this aqueous phase. In this case it will preferably be a dispersion polymer or an amphiphilic or associative polymer. By "dispersed polymer" is meant non insoluble polymers in water present in the form of particles of variable size. The polymer may be crosslinked or not. The average particle size is typically between 25 and 500 minutes, preferably between 50 and 200 nm. The following aqueous dispersion polymers can be used: Ultrasol 2075® from Clan Chernical. Daito Kasei Daitosol 5000AD®, Noveon Avalure UR 45012, National Starch DYNAM.X®, Interpolymer Syntran 576012, Rohm & Ilaas Acusol OP 301, Neocryl A 1090® from Avecia. The acrylic dispersions sold under the names Neocryl XK-90 0, Neocryl A-10700, Neocryl A-1090®., Neocryl BT-62®, Neocryl A-1079® and Neocryl A-523® by the company Avecia-Neoresins, Dow Latex 4320 by the company DOW CFIEMICAL. Daitosol 5000 AD 1Z or Daitosol 5000 SJ O by the company DAITO KASEY KOGYO, Syntran 5760® by the company Interpolymer, Allianz OPT by the company ROHM & I {AAS, aqueous dispersions of acrylic or styrene-acrylic polymers sold under the brand name JONCRYL 1t by JOHNSON POLYMER or the aqueous polyurethane dispersions sold under the names Neorez R-981® and Neorez R-974® by the company AVECIA-NEORESINS, Avalure UR-405®, Avalure UR-410®, Avalure UR-4250, Avalure UR-4500. Sanceau 8750, Sancure 861 @, Sancure 878® and Sancure 206012 by the company GOODRICI-1, Impranil 850 by the company BAYER, 30 Aquamere H-1511 CD by the company HYDROMER, sulfopolyesters sold under the brand name Eastman AQ® by Eastman Chemical Products, vinyl dispersions such as Mexomere PAMO from Chimex and mixtures thereof are other examples of aqueous dispersions of particles of film-forming hydrodispersible polymers. By "amphiphilic or associative polymers" is meant polymers having one to several hydrophilic moieties which render them partially soluble in water and one or more hydrophobic moieties through which the polymers associate or interact. The following associative polymers may be used: Nuvis FX1100® from Elementis, Aculyn 22®, Aculyn 44®, Aculyn 46® from Rohm & Haas, Viscophobe DB1000® from Amerchol. Lithium block copolymers consisting of a hydrophilic block IO (polyacrylate, polyethylene glycol) and a hydrophobic block (polystyrene, polysiloxane) may also be used, the composition may comprise an oily phase and the film-forming polymer may be present in this group. The polymer may then be in dispersion or in solution, the NAD-type polymers or microgels (for example KSG) may be used, as well as the polymers of the PS-PA type or the styrene-based copolymers ( Kraton, Regalite) As examples of non-aqueous dispersions of polymer particles in one or more silicone and / or hydrocarbon oils and which can be stabilized at their surface by at least one stabilizing agent, in particular a block, grafted or random polymer, mention may be made of acrylic dispersions in isododecane, such as the Mexomère PAPO from Chimex, and dispersions of particles of an ethylene polymer. grafted ylene, preferably acrylic, in a liquid fatty phase, the ethylenic polymer being advantageously dispersed in the absence of additional stabilizer at the surface of the particles as described in particular in WO 04/055081. Among the film-forming polymers that may be used in the composition of the present invention, mention may be made of synthetic polymers, of radical type or of polycondensate type, polymers of natural origin, and mixtures thereof. The radical-type film-forming polymers may in particular be vinyl polymers or copolymers. especially acrylic polymers. The vinyl film-forming polymers may result from the polymerization of ethylenically unsaturated monomers having at least one acidic group and / or esters of these acidic monomers and / or amides of these acidic monomers such as α, n-ethylenically unsaturated carboxylic acids. as acrylic acid, methacrylic acid, crotonic acid, maleic acid, itaconic acid. The polymers of natural origin, optionally modified, may be selected from shellac resin, sandarac gum, dammars, elemis, copal, cellulosic polymers, such as nitrocellulose, ethylcellulose or selected nitrocellulose esters. for example, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and mixtures thereof. The film-forming polymer may be present in the form of solid particles in aqueous or oily dispersion, generally known as latex or pseudolatex.

The film-forming polymer may comprise one or more stable dispersions of generally spherical polymer particles of one or more polymers in a physiologically acceptable liquid fatty phase. These dispersions are generally referred to as polymer NADs as opposed to latexes which are aqueous polymer dispersions. These dispersions can in particular be in the form of polymer nanoparticles in stable dispersion in said fatty phase. The nanoparticles are preferably of a size between 5 and 600 nm. The techniques for preparing these dispersions are well known to those skilled in the art. The composition may comprise at least one film-forming polymer which is a film-forming linear ethylenic block polymer. This polymer may comprise at least a first block and at least a second block having different glass transition temperatures (Tg), said first and second blocks being interconnected by an intermediate block comprising at least one constituent monomer of the first block and at least one constituent monomer of the second sequence. For example, the first and second sequences and the block polymer are incompatible with each other. Such polymers are described for example in EP 1411069 or WO 04/028488. Fatty phase Although the composition containing the photonic particles may be oil-free, the composition according to the invention may nevertheless comprise, in certain embodiments, a fatty phase. The photonic particles may or may not be contained in this fatty phase. The fatty phase can in particular be volatile.

The composition may comprise an oil such as, for example, esters and synthetic ethers, linear or branched hydrocarbons of mineral or synthetic origin, fatty alcohols having from 8 to 26 carbon atoms, partially hydrobromic oils, and / or silicone, silicone oils such as volatile or non-volatile polymethylsiloxanes (PDMS) with a linear or cyclic silicone chain, liquid or pasty at room temperature and mixtures thereof, other examples being given below. A composition according to the invention may thus comprise at least one volatile oil.

Volatile oils For the purposes of the present invention, the term "volatile oil" means an oil (or non-aqueous medium) capable of evaporating on contact with the skin in less than one hour, at ambient temperature and at atmospheric pressure. The volatile oil is a volatile cosmetic oil. liquid at ambient temperature, especially having a non-zero vapor pressure, at ambient temperature and atmospheric pressure. in particular having a vapor pressure of 0.13 Pa to 40 000 Pa (10-s to 300 mmHg), in particular ranging from 1.3 Pa to 13000 Pa (0.01 to 100 mmHg), and more particularly ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mm Hg). The volatile hydrocarbon oils may be chosen from hydrocarbon-based oils of animal or vegetable origin having from 8 to 16 carbon atoms, and especially branched C 8 -C 16 alkanes (also known as isoparaffins), such as isododecane (also called 2.2.4 , 4,6-pentamethylheptane), isodecane, isohexadecane, and for example the oils sold under the trade names Isopars® or Permethylse®.

As volatile oils, it is also possible to use volatile silicones, for example volatile linear or cyclic silicone oils, in particular those having a viscosity ≤ 8 centistokes (8 × 10 -6 m 2 / s), and having in particular from 2 to 10 silicon atoms, and in particular from 2 to 7 silicon atoms, these silicones optionally containing alkyl or alkoxy groups having from 1 to 10 carbon atoms. As volatile silicone oil that may be used in the invention, mention may be made in particular of dimethicones of viscosity 5 and 6 eSt. octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyl disiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane, and mixtures thereof. Fluorinated volatile oils such as nonafluoromethoxybutane or perfluoromethylcyclopentane and mixtures thereof can also be used. It is also possible to use a mixture of the above-mentioned oils, non-poultry oils. A composition according to the invention may comprise a non-volatile oil. For the purposes of the present invention, the term "non-volatile oil" means an oil having a vapor pressure of less than 0.13 Pa and especially oils of high molar mass. The non-volatile oils may in particular be chosen from fluorinated hydrocarbon oils which may be fluorinated and / or non-volatile silicone oils. As a nonvolatile hydrocarbon oil which may be suitable for setting. According to the invention, mention may be made in particular of: hydrocarbon-based oils of animal origin, hydrocarbon-based oils of vegetable origin, such as phytostearyl esters, such as phytostearyl oleate, physostearyl isostearate and lauroyl / oetyldodecyl glutanate / phytostearyl, for example sold under the name ELDEW PS203 by AJINOMOTO, triglycerides consisting of esters of fatty acids and of glycerol, the fatty acids of which can have various chain lengths of C4 to C24, these the latter may be linear or branched, saturated or unsaturated; these oils include heptanoic or oetanoic triglycerides, wheat germ, sunflower, grape seed, sesame, maize, apricot, castor, shea, avocado, olive, soya, sweet almond, palm, rapeseed, cotton, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, squash, blackcurrant, evening primrose, millet, barley, quinoa, rye, safflower, bancoulier, passionflower, muscat rose; shea butter or triglycerides caprylic / capric acids such as those sold by the company STEARINERIES DUBOIS or those sold under the names MIGLYOL 810th, 812® and 818 by the company DYNAMIT NOBEL, 30 - hydrocarbon oils of mineral origin or synthetic, for example: synthetic ethers having from 10 to 40 carbon atoms; e linear or branched hydrocarbons of mineral or synthetic origin such as petroleum jelly, polydecenes, hydrogenated polyisobutene such as parleam, squalane and their mixtures, and in particular hydrogenated polyisobutene, and synthetic esters such as oils of the formula R1COOR2 in which R1 represents the residue of a linear or branched fatty acid containing from 1 to 40 carbon atoms and R2 represents a particularly branched hydrocarbon-based chain containing from 1 to 40 carbon atoms, provided that R1 + R2 is> _ The esters may in particular be chosen from esters, in particular of fatty acids, for example: cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate or isopropyl palmitate. ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate or isostearate, isostearyl isostearate, octyl stearate, hydroxylated esters, and the like. e lactate isostearyl. octyl hydroxystearate, diisopropyl adipate, heptanoates, and especially isostearyl heptanoate, 15 octanoates, decanoates or ricinoleates of alcohols or polyalcohols such as propylene glycol dioctanoate, cetyl octanoate, tridecyl octanoate, 4-diheptanoate and 2-hexyl ethyl palmitate, alkyl benzoate, polyethylene glycol diheptanoate, propylene glycol diethyl-2-hexanoate and mixtures thereof, alcohol benzoates in C12 to C15, hexyl laurate, neopentanoic acid esters such as isodecyl neopentanoate, isotridecyl neopentanoate, isostearyl neopentanoate, octyldececyl neopentanoate, esters of isononanoic acid such as isononyl isononanoate, isotridecyl isononanoate, octyl isononanoate, hydroxylated esters such as isostearyl lactate, diisostearyl malate; Polyol esters, and pentaerythritol esters, such as dipentaerythritol tetrahydroxystearate / tetraisostearate, diol dimeric diol ester esters such as Lusplan DDDAS® and Lusplan DD-DA7®, marketed by NIPPON FINE CHEMICAL. and described in application FR 03 02809, e branched-chain and / or unsaturated carbon-chain liquid alcohols having from 12 to 26 carbon atoms, such as 2-octyldodecanol, isostearyl alcohol and oleic alcohol, 2-hexyldecanol, 2-butyloctanol, and 2-undecylpentadecanol, 2951078 1.8 ® higher fatty acids such as oleic acid, linoleic acid, linolenic acid and mixtures thereof, and • carbonates of di- alkyl, the 2 alkyl chains may be identical or different, such as dicaprylyl carbonate sold under the name Cetiol CC®, by Cognis, non-volatile silicone oils, as per non-volatile polydimethylsiloxanes (PDMSs), polydimethylsiloxanes comprising pendant alkyl and alkoxy groups and / or silicone chain ends, groups each having from 2 to 24 carbon atoms, phenyl silicones such as phenyl (1-trimethicones, phenyl dimethicones, phenyl trimethylsiloxy diphenylsiloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, and 2-phenylethyl trimethylsiloxysilicates, dimethicones or phenyltrimethicone with a viscosity less than or equal to 100 Cst, and mixtures thereof, and mixtures thereof. The composition containing the photonic particles may be free of oil, in particular containing no nonvolatile oil. COMPLEMENTARY FILTERS AND ADDITIVES The composition comprising the photonic particles may comprise at least one additive chosen from the usual adjuvants in the cosmetics field, such as fillers, coloring agents, hydrophilic or lipophilic gelling agents, and water-soluble active agents. or liposoluble, preservatives, moisturizers such as polyols and in particular glycerin, sequestering agents, antioxidants, solvents, perfumes, sunscreens, both physical and chemical, in particular with UVA and / or UVB, odor absorbers , pH adjusters (acids or bases) and their mixtures. The composition may contain at least one active agent having a complementary activity in the field of sun protection, such as the antioxidants of whiteners in the context of anti-pigmentation and depigmentation, anti-aging active agents. The additional organic, hydrophobic, hydrophilic or insoluble filters in the usual solvents may in particular be chosen from different families of chemical compounds. The organic filters are especially chosen from dibenzoylmethane derivatives; anthranilates; cinnamic derivatives; salicylic derivatives, camphor derivatives; benzophenone derivatives; O3-diphenylacrylate derivatives; triazine derivatives other than those of formula (1); benzalmalonate derivatives including those cited in US5624663; benzimidazole derivatives; imidazolines; p-aminobenzoic acid derivatives (PARA); benzotriazole derivatives; methylene bis (hydroxyphenyl benzotriazole) derivatives as described in US Pat. Nos. 5,237,071, 5,166,355, 0B2303549, DE 197 26 184 and EP893119, the benzoxazole derivatives as described in patent applications EP0832642. EP1027883, EP1300137 and DE10162844; filter and silicone screening polymers such as those described in particular in application WO-93 / 104,665: Crutylkylstyrene-derived dimers such as those described in the patent application DEI 98.55649; 4,4-diarylbutadienes as described in applications EP0967200, DE19746654, DE19755649, EP-A-1008586. EP1133980 and EP133981; merocyanine derivatives such as those described in applications W004006878 ,. W005058269 and W006032741 and mixtures thereof. The filters may be selected from the following filters. Hydrophobic filters capable of absorbing UV from 320 to 400 nm (UVA) Derivatives of dibenzoylmethane Butyl M. ethoxydibenzoylmethane sold in particular under the trade name "PARSOL 1789" by DSM Nutritional Products, Inc., Isopropyl Dibenzoylmethane. Aminobenzophenones n-hexyl 2- (4-diethylamino-2-hydroxybenzoyl) benzoate sold under the trade name "UVINUL A -" by BASE. Anthranilic Derivatives Menthyl anthranilate sold under the trade name "Neo Heliopan MA" by SYMRISE. Derivatives of 4; 4-diarylbutadicene 1,1-dicarboxy (2,2'-dimethyl-propyl) -4,4-diphenylbutadiene Preferred filters are butyl methoxydibenzoylmethane and 2- (4- (diethylamino) -2-hydroxybenzoyl) benzoate. n-hexyl. Hydrophobic filters capable of absorbing UV from 280 to 320 min. (UVB) Para-Arninobenzoates Ethyl PABA Ethyl Dihydroxypropyl PABA Ethylhexyl Dimethyl PARA. (Escalol 507 from ISP) Salicylic derivatives Ilomosalate sold under the name "Eusolex HMS" by RonaIEM Industries, Ethylhexyl Salicylate sold under the name "NEO HELIOPAN OS" by SYMRISE, Dipropylene glycol salicylate sold under the name "DIPSAL" by SCIIER, TEA Salicylate, sold under the name "NEC HELIOPAN TS" by SYMRISE.

Cinnainates Ethylhexyl Methoxycinnamate sold in particular under the trade name "PARSOL MCX" by DSM Nutritional Products, Iac, I.sopropyl Methoxy cinnamate, Isoamyl Methoxy cinnamate sold under the trade name "NEO 15 HELIOPAN E 1000" by SYMRISE, Diisopropyl Methylcinnamate, Cinoxate, Glyceryl Ethylhexanoate Dimethoxycinnam.ate. Derivatives of β, β-diphenyl acrylate Octocrylene, sold in particular under the trade name "UVINUL N539" by BASE, Etocrylene, sold in particular under the trade name "UVINUL N35" by BASE. Derivatives of henzylidene camphor 3-Benzylidene camphor manufactured under the name "MEXORYL SI" by CI-IIMEX, Vlethylbenzylidene camphor sold under the name "EUSOLEX 6300" by MER.CK, Polyacrylamidomethyl Benzylidene Camphor manufactured under the name "MEXORYL SW" by CIIIMEX. Triazine derivatives Ethylhexyl triazone sold in particular under the trade name Uvinul T150 by BASE. Diethylhexylbutamido triazone sold under the trade name "UVASOI HEB" by SIGMA 3V, S 2,4,6-tris (4'-amino benzalmalonate dineopentyl) -s-triazone 2,4,6-tris- (4'amino benzalmalonate of diisobutyl) -s-triazine, 2,4-bis (4'-amino benzalmalonate dineopentyl) -6- (4-n-butyl-4-aminobenzoate) -s-triazine, 2,4-bis (4'-amino) n-butyl benzoate) -6- (aminopropyltrisiloxane) s-triazine, 1 {) the symmetrical triazine filters described in US Pat. No. 6,225,467, WO 2004/085412 (see compounds 6 and 9) or the document "Symetrical Triazine Derivatives »IP.COM Journal, IP.COM INC. WEST HENRIETTA, NY, US (September 20, 2004) including 2,4,6-tris- (biphenyl) -1,3,5-triazines (in particular 2, 4,6-tris (biphenyl-4-yl-1,3,5-triazone) and 2,4,6-tris (terphenyl) -1,3,5-triazone which is incorporated in WO BEIERSDORF applications. 06/035000, WO 06/034982, WO 06/034991, WO 06/035007, WO 2006/034992, WO 2006/034985. Imidazoline derivatives Ethylhexyl Dimethoxybenzyliden e Dioxoimidazoline Propionate. Derivatives of benzalmalonate Benzalmalonate-functional polyorganosiloxanes such as Polysilicone-I5 sold under the trade name "PARSOL SLX" by DSM Nutritional Products, Inc., III-neopentyl 4'-methoxybenzalmaionate. Dereryenoyl Derivatives Octyl-5-N, N-diethylamino-2-phenysulfonyl-2,4-pentadienoate. Preferred filters are H.omosalate, Ethylhexylsalicylate, Octocrylene, Ethylhexyl, Methoxycinnamate v, Isoamyl Methoxy cinnamate, Ethylhexyl triazone, Diethylhexylbutamido triazone. Most preferred are ethylhexylsalicylate, octocrylene, ethylhexyl triazone, ethylhexyl methoxycinnamate. Mixed hydrophobic filters capable of absorbing both UVA and IVE Derivatives of benzophenone Benzophenone-1 sold under the trade name "UVINUL 400" by BASF, Benzophenone-2 sold under the trade name "UVINUL D50" by BA.SF Benzophenone -3 or Oxybenzone, sold under the trade name "UVINUL M40" by BASF, Benzophenone-5. Benzophenone-6 sold under the trade name "Helisorb 1 1" by Norquay Benzophenone-8 sold under the trade name "Spectra-Sorti UV-24" by American Cyanamid Benzophenone-10, Benzophenone-1, Benzophenone-12, Phenyl derivatives benzotriazole Drometrizole Trisiloxane sold under the name "Silatrizole" by Rhodia Chimie Methylene bis-Benzotriazolyl Tetramethylbutylphenol, sold in solid form under the trade name "M.1XX1M BB1100" by FAIRMOUNT CHEMICAL or in micronized form in aqueous dispersion under the trade name "TINOSORB M By CIBA SPECIALTY CHEMICALS. Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine bis-resor cinyi triazine derivatives sold under the trade name "TINOSORB S" by CIBA GEIGY. Benzoxazole derivatives 2,4-bis- [5- (dimethylpropyl) benzoxazol-2-yl- (4-phenyl) imino] -h- (2-ethylhexyl) imino-1, 7,5-triazine sold The preferred filters are: Drometrizole Trisiloxane, Methylene bis-Benzotriazolyl Tetramethylbutylphenol, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, and Benzophenone-3 or Oxybenzone. The most preferred filters are: Drometrizole Trisiloxane. and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine. Water-soluble filters capable of absorbing UV from 320 to 400 mn (UVA) Terephthalylidene Dicamphre Acid Sulfonic Acid manufactured under the name "MEXORYL SX" by CHIMEX. The bis-benzoazolyl derivatives as described in patents EP 669 323, and US 2,463,264 and more particularly the compound Disodium Phenyl Dibenzirnidazole Tetrasulfonate sold under the commercial non-commercial NEO HELIOPAN AP "by Haarmann and REIMER, the preferred filter is Terephthalyhden Dicamphor Sulfonic Acid Acid Water-soluble filters capable of absorbing UV radiation from 280 to 320 nm (UVBJ Derivatives of p-aminobenzoic acid (PABA) 10 PABA, Glyceryl PABA, and PEG-25 PABA sold under the name "UVINUL P25" by BASF, Phenylbenzimidazole Sulfonic Acid sold in particular under the trade name 'Eusolex 232' by Merck, Ferulic acid, Salicylic acid, DEA methoxycinnamate, Benzylidene Camphor Sulfonic acid manufactured under the name Mexoryl Si by Chimex, Camphor Benzalkonium Methosulfate manufactured under the name "MEXORYL SO" by CHIMEX .. and The preferential filter is Phenylbenzimidazole Sulfonic Acid Mixed water-soluble UVA and UVB filters Derivatives of benzophenon comprising at least one benzophenone-4 sulfonic radical sold under the trade name UVINUL MS40- by BASF. Benzophenone-5, and Benzophenone-9. The preferred filter is Benzophenone-4. The organic screening agent (s) according to the invention may be present in the compositions according to the invention at a concentration of between 0.1 and 15%, preferably between 0.2 and 10%. , by weight relative to the total weight of the composition. sunscreens or inorganic hot-protectors The inorganic photoprotective agents are chosen from coated or uncoated metal oxide pigments (average size of the primary particles: generally between 5 nm and 100 nm, preferably between 10 nm and 50 nm), for example titanium oxide pigments (amorphous or crystallized in rutile and / or anatase form), iron, zinc, zirconium or cerium which are all UV photoprotective agents well known per se. The pigments can be coated or uncoated. The coated pigments are pigments which have undergone one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with compounds as described, for example, in Cosmetics & Toiletries, February 1990, Vol. 105, p. 53-64, such as amino acids, beeswax, fatty acids, fatty alcohols, anionic surfactants, lecithins, sodium, potassium, zinc, iron or aluminum salts of fatty acids, metal alkoxides (titanium or aluminum), polyethylene, silicones, proteins (collagen, elastin), alcanolainins, silicon oxides, metal oxides or sodium hexametaphosphate. In known manner. the silicones are organosilicon polymers or oligomers with a linear or cyclic, branched or crosslinked structure, of variable molecular weight, obtained by polymerization and / or polycondensation of suitably functionalized silanes, and essentially constituted by a repetition of main motifs in which the Silicon atoms are connected to each other by oxygen atoms (siloxane bond), optionally substituted hydrocarbon radicals being directly bonded via a carbon atom to said silicon atoms. The term "silicones" also includes the silanes necessary for their preparation, in particular alkyl silanes. The silicones used for coating the pigments suitable for the present invention are preferably chosen from the group containing alkyl silanes, polydialkylsiloxanes, and polyalkylhydrogensiloxanes. Even more preferentially, the silicones are chosen from the group containing octyl trimethyl silane, polydimethylsiloxanes and polymethylhydro-genosiloxanes. Of course, the metal oxide pigments before their treatment with silicones, may have been treated with other surfactants, in particular with cerium oxide, alumina, silica, aluminum, silicon compounds, or mixtures thereof. The coated pigments are more particularly titanium oxides coated with: - silica, such as the product "SUNVEIL" from TKEDA, silica and iron oxide such as the product "SUNVEIL" from the company IKEDA_ - silica and alumina such as "MICROTITANIUM" products. DIOXIDE MT 500 SA "and" M1CROTITANIUM DIOXIDE MT 100 SA "company TAYCA," TIOVEIL, "from the company TIOXIDE, 10-alumina such as the products" TIPAQUE TTO-55 (B) "and" TIFAQUE TTO-55 ( A) "from the company ISHIHARA, and" UVT 1414 "from the company KEMIRA, - alumina and aluminum stearate such as the products" MICROTITANIUM DIOXIDE MT 100 T, MT 100 TX, MT 100 Z, MT-01 TAYCA, the Solaveil CT-10 W and Solaveil CT 100 products from UNIQEMA and the Eusolex T-AVO product from MERCK, silica, alumina and alginic acid such as the product "MT-100 AQ" from the company TAYCA, alumina and aluminum laurate such as the product "MICROTITANIUM DIOX.IDE MT 100 S" from the company TAYCA. iron oxide and iron stearate such as the product MICROTITANIUM DIOXIDE MT 100 F from TAYCA, zinc oxide and zinc stearate, such as the product "BR 351" from the company Tayca, 25 of silica and alumina and treated with a silicone such as the products "MICROTITANIUM DIOXIDE MT 600 SAS", "MICROTITANIUM DIOXIDE MT 500 SAS" with "MICROTITANIUM DIOXIDE MT 100 SAS" from TAYCA, silica, alumina , of aluminum stearate and treated with a silicone such as the product "STT-30-DS" from the company TITAN KOGYO, 30-silica and treated with a silicone such as the product "UV-TITAN X 195" of the KEMIRA company, - alumina and treated with a silicone such as the products TIPAQUE TTQ-55 (S) "ISHIHARA company, or" UV TITAN M 262 "KEM.IRA company, - triethanolamine such as the product "STT-65-S" from TITAN KOGYO, - stearic acid, such as the product "TIPAQUE TTO-55 (C) Of the company ISI-III TARA, sodium hexametaphosphate such as the product "MICROTITANIUM DIOXIDE MT 150 W" from the company TAYCA, the TiO 2 treated with octyl trimethyl silane sold under the trade name "T 805" by the company Degussa Silices, the TiO 2 treated with a polydimethylsiloxane sold under the trade name "70250 Cardre UF TiO2SI3" by CARDRE, the TiO2 anatase / rutile treated with a polydimethylhydrogensiloxane sold under the trade name "MICRO TITANIUM DIOXIDE USP GRADE 15 HYDROPHOBIC "by the company COLOR TECHNIQUES. The uncoated titanium oxide pigments are for example sold by the company Tayca under the trade names "MICROTITANIUM DIOXIN MT 500 E" or "MICROTITANIUM DIOXIDE MT600 B" by the company DEGUSSA under the name "P 25". by the company WACKHER under the name "transparent titanium oxide PW", by the company MIYOSHI KASEI under the name "UFTR_", by the company TOMEN under the name "ITS" and by the company TIOXIDE under the name "TIOVEIL AQ" . The uncoated zinc oxide pigments are, for example: those marketed under the name Z-cote by the company Sunsmart, those sold under the name Nanox by the company Elenientis, those marketed under the name "Nanogard WCD 2025" by the company Nanophase Technologies, the coated zinc oxide pigments are for example: those marketed under the name "zinc oxide CS-5" by the company Toshibi (ZnO coated with polyrnethylhydrogenesiloxane); sold under the name "Nanogard Zinc Oxide FN" by the company Nanophase Technologies (as a 40% dispersion in the Finsoiv TN, benzoate of C12-C1 alcohols), - those sold under the name "DAITOPERSI.ON ZN-30" And "DA.ITOPERSION Zn-50" by Daito (dispersions in oxyethylenated cyclopolymethylsiloxane Ipolydimethylsiloxane, containing 30% or 50% zinc nano-oxides coated with silica and polymethylhydrogensiloxane), those sold under the name "NFD Ultrafine ZnO" by the company Daikin (ZnO coated with per uoroalkyl phosphate and with a periluoroalkylethyl salt copolymer dispersed in cyclopentasiloxane). those sold under the name " SIT-Z1 by Shin-Etsu (ZnO coated with silicone grafted acrylic polymer. dispersed in cyclodimethylsiloxane), - those sold under the name "Escalol 2100" by the company ISP (ZnO treated alumina and dispersed in the mixture methoxycinnamate ethylhexylelcopolyane PVP-hexadecenelmethicone), - those sold under the name "Fuji ZnO-SMS- 10 "by the company Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane), - those sold under the name" Nanox Gel TN "by the company Elementis (ZnO dispersed at 55% in benzoate of C12-Cu alcohols with polycondensate d hydroxystearic acid). The uncoated cerium oxide pigments are sold under the name "COLLOIDAL CERIUM OSIDE" by R.IIONE POULENC. Uncoated iron oxide pigments are for example sold by ARNAUD under the names "NANOGARD WCD 2002 (FE 45B)", "NANOGARD IRON FE 45 BL AQ", "NANOGARD FE 45R AQ", "NANOGARD WCD 2006 (FE 45R) ", or by the company MITSUBISHI under the name" TY-220 ". The coated iron oxide pigments are for example sold by ARNAUD under the names "NANOGARD WCD 2008 (FE 4513 FN)", "NANOGARD WCD 2009 (FE 45B 556)", "NANOGARD FE 45 BL 345", "NANOGARD FE 45 BL", or by BASF under the name "OXYDE DE FER TRANSPARENT".

Mention may also be made of mixtures of metal oxides, in particular titanium dioxide and cerium dioxide, including the titanium dioxide / cerium-coated cerium-equalium mixture, sold by the company IKEDA under the name "SUNVEIL A". And the mixture of titanium dioxide and zinc dioxide coated with alumina, silica and silicone such as the product "M 261" sold by the company KEMIRA or coated with alumina, silica and glycerin such as that the product "M 211" sold by KEMIRA. The inorganic filter (s) may be present in the compositions according to the invention at a concentration of between 0.1 and 15%, preferably between 0.2 and 10%, by weight relative to the total weight of the composition. The additive (s) may be selected from those cited in the CTFA Cosmetic Ingredient Handsbook, 10th Edition Cosmetic and Fragrance Assn, Inc., Washington DC (2004). Photonic particles can be used in lotions, creams, milks, ointments, gels, films, patches, sticks, powders, pastes, for the skin, lips, hair or nails. Modes of Application The composition comprising the photonic particles may be applied by hand or using an applicator. The application can also be carried out by spraying or spraying using, for example, a piezoelectric device or by transferring a layer of composition previously deposited on an intermediate support. Packaging The composition may be packaged in any packaging device, in particular thermoplastic or any support provided for this purpose. The packaging device may be a bottle, a pump bottle, an aerosol bottle, a tube, a bag, a pot. EXAMPLE 30 The nanoparticles consist of 100% of 285 nm PMMA nanoparticles from Soken.

The photonic particles, obtained by spray drying, have a size of about 30 gin. FIG. 4 represents an absorption spectrum of different compositions comprising photonic particles according to the invention.

The expression "comprising one" must be understood as meaning "comprising at least one". unless the opposite is specified.

Claims (15)

REVENDICATIONS1. Photonic particle (1), of average size between 1 and 500 la, especially between 1 and 300 μam comprising a diffractive arrangement of hollow nanoparticles (10). 2. photonic particle (1) according to claim 1. the hollow nanoparticles (10) having a core and a bark, the difference in refractive index at a diffracted wavelength, between the core and the bark, being greater than or equal to 0.4. 3. Photonic particle (1) according to one of the two preceding claims, the hollow nanoparticles (10) comprising a core and a bark, the ratio between a larger dimension of the core and a larger dimension of the nanoparticle (10). ) being between 0.5 and 0.8. 4. photonic particle (1) according to any one of the preceding claims having a form factor of less than 2, said particle (1) being in particular substantially spherical shape. 5. Photonic particle (1) according to one of the preceding claims. the arrangement comprising hollow nanoparticles (10) aggregated without matrix. 6. Photonic particle (1) according to one of claims 1 to 4, the arrangement comprising hollow nanoparticles (10) aggregated or dispersed within a matrix (20). 7. photonic particle (1) according to any one of the preceding claims, the hollow nanoparticles (10) being substantially spherical in shape. 8. Photonic particle (1) according to any one of the preceding claims, the hollow nanoparticles (10) being monodisperse. 9. Photonic particle (1) according to any one of the preceding claims. the nanoparticles (10) comprising a core and a bark, the core of the nanoparticles being constituted by a gas. 10. photonic particle (1) according to any one of the preceding claims, comprising at least one other diffractive arrangement of nanoparticles, including two other diffracting arrangements, the arrangements having different diffraction spectra different. 11. photonic particle (1) according to the preceding claim, the diffraction-producing arrangements of respective different colors, including red, green and blue when illuminated by white light. 12. Cosmetic composition comprising, in a cosmetically acceptable medium, a dispersion of photonic particles according to any one of the preceding claims. 13. Process for the non-therapeutic photoprotection of human keratin materials with respect to solar UV radiation, comprising a step of applying to the substrate a composition as defined in claim 12. 1 [) 14. A process for staining and / or lightening human keratin materials comprising a step of applying to the substrate a composition as defined in claim 12. 15. A method of modifying the spectral reflectance of human keratin materials comprising a step of applying to the substrate a composition as defined in claim 12.