FR2971707A1 - AQUEOUS COSMETIC COMPOSITION CONTAINING PARTICLES OF COMPOSITE MATERIAL AND GAMMA-ORYZANOL - Google Patents

Abstract

The present invention relates to a composition containing in a cosmetically acceptable medium a) at least one aqueous phase and b) at least composite particles A of size between 100 nm and 30 μm comprising a matrix and an inorganic UV filter, said filter inorganic being present in a content ranging from 1% to 70% by weight relative to the total weight of the composite particle and c) gamma-oryzanol or a plant extract containing it.

Description

AQUEOUS COSMETIC COMPOSITION CONTAINING PARTICLES OF COMPOSITE MATERIAL AND GAMMA-ORYZANOL

The present invention relates to a composition containing in a cosmetically acceptable medium a) at least one aqueous phase and b) at least composite particles A of size between 100 nm and 30 μm comprising a matrix and an inorganic filter, said filter the inorganic compound being present in a content ranging from 1% to 70% by weight relative to the total weight of the composite particle and c) gamma-oryzanol or a plant extract containing it.

This composition is for topical use and more particularly for the photo-protection of the skin and / or the hair against ultraviolet radiation (UV).

It is known that light radiation with a wavelength of between 280 nm and 400 nm enables the browning of the human epidermis, and that the wavelength rays more particularly between 280 and 320 nm, known under the name UV-B, cause erythema and skin burns that can affect the development of natural tanning.

For these reasons, as well as for aesthetic reasons, there is a constant demand for control means of this natural tan to control the color of the skin and thus the UV-B radiation must be filtered.

It is also known that the UV-A rays, of wavelength between 320 and 400 nm, which cause browning of the skin, are capable of inducing an alteration thereof, particularly in the case of a skin sensitive or skin continuously exposed to solar radiation. UV-A rays cause in particular a loss of elasticity of the skin and the appearance of wrinkles leading to premature cutaneous aging.

Thus, for aesthetic and cosmetic reasons, such as the preservation of the natural elasticity of the skin, for example, more and more people desire to control the effect of UV-A on their skin. It is therefore desirable to also filter the UV-A radiation.

In order to protect the skin and keratinous material against UV radiation, antisolar compositions comprising organic screening agents which are active in the UV-A and active in the UV-B are generally used.

There are many cosmetic products comprising one or more inorganic and / or organic UV filters. These antisolar compositions are quite often in the form of an oil-in-water emulsion (that is to say a cosmetically and / or dermatologically acceptable support consisting of a continuous dispersing phase PR91893 / KLP / SF / cf 45 aqueous and dispersed oily dispersed phase) due in particular to their pleasant touch (close to water) and their presentation in the form of milk or non-fat cream.

However, one of the drawbacks of oil-in-water emulsions is that they very easily lose their effectiveness in UV protection when they come into contact with water; in fact, the filters they contain in their aqueous phase are entrained by the water, during bathing at sea or in the pool for example, or in the shower or during the practice of water sports and the overall photoprotective power of these compositions are greatly diminished.

Therefore, in some cases where a particularly high and durable protection is sought, as for the skins of children or for sensitive skin, it is preferred to use water-in-oil compositions which have good persistence to the skin. water and thus retain a very good photoprotective power even after several baths.

The water-in-oil emulsions generally contain emulsifiers to stabilize the dispersion of the discontinuous aqueous phase in the oily phase and to obtain a homogeneous composition. Silicone emulsifiers such as silicone copolyols have the disadvantage of being sometimes incompatible with the aqueous phase of the emulsions.

For children's skin or sensitive skin, it is most often used fine metal oxide particles such as titanium dioxide (TiO2) to protect the skin from UV rays.

These fine metal oxide particles generally have a mean elementary particle size of less than or equal to 100 nm, preferably between 5 nm and 100 nm, preferably between 10 nm and 100 nm, and preferably between 15 and 50 nm. .

One of the major drawbacks of inorganic filters lies in the fact that the conventional antisolar formulations based on metal oxide pigments lead, after application to the skin, to an irregular, inhomogeneous or even coarse distribution of said pigments on this skin. , which can affect the quality of the desired global photoprotective effect. This poor distribution of the filtering metal oxide pigments found on the surface of the skin is often linked to the fact that there is, at the level of the initial composition itself (before application), a substantial lack of homogeneity ( poor dispersion of the pigment in its support).

Another disadvantage of solar compositions based on inorganic filters and more particularly based on titanium oxide TiO 2, is that, when applied to the skin in the form of a film, they generate on the latter a whitening effect which is cosmetically undesirable and generally unappreciated by users. This effect is all the more marked as the concentration of mineral filters in the composition is high. To avoid this problem, it would be possible to use reduced amounts of inorganic filter (s), but the resulting compositions, which would certainly lead to films having an acceptable transparency on the skin, would then no longer offer a suitable protection in the UV field, which greatly limits the interest of such an option.

The applications FR2882371, WO2006 / 083326 and WO 98/37964 describe various processes for manufacturing composite particles made of a material comprising nanoparticles of metal oxides, such as titanium dioxide.

WO 2006/061835 discloses compositions comprising spherical composites based on metal oxide and a hydrophobic polymer.

JPO4198124 discloses makeup powders such as foundations of organic or inorganic material whose surface is covered and bonded to an organic or inorganic UV filter. These anhydrous filtering materials have the disadvantage of being difficult to apply to the body as a sunscreen product.

In the field of cosmetics, we know the application EP 1388550 which aims the use of composite particles comprising a core formed of a metal oxide coated with a silicone or fluorinated compound and its use as a photoprotective cosmetic composition and the application WO 98/22539 which describes a solar filter containing a particle of silicon and / or of another solid compound in which the silicon is in stoichiometric excess, said particle having a mean diameter of less than 120 nm and being covered with a layer of oxide with a thickness ranging from 1 to 300 nm.

Solar formulations are known which can contain, as filter system, spherical particles of composite material of average size of between 2 and 7 μm, TiO2 encapsulated in spherical silica particles such as those sold under the name EOSPOLY TR by CREATION COLOR or the denomination SUNSIL T50 by SUNJIN CHEMICAL.

These filtering materials have the drawbacks of leading to formulations whose effectiveness remains insufficient in solar aqueous formulations.

There remains a need for UV sunscreen compositions in the form of water-in-oil emulsion without silicone emulsifier that are effective in photoprotection and do not have the disadvantages presented above.

Unexpectedly and advantageously, the inventors have shown that this need can be met by means of the compositions according to the present invention. The present invention relates to a composition containing in a cosmetically acceptable medium a) at least one aqueous phase and b) at least composite particles A of size between 100 nm and 30 μm comprising a matrix and an inorganic UV filter, said inorganic UV filter being present in a content ranging from 1% to 70% by weight relative to the total weight of the composite particle and c) gamma-oryzanol or a plant extract containing it.

The following description and examples have other advantages, aspects and properties of the present invention.

Definitions The following definitions are used in this text.

The compositions according to the present invention are photoprotective compositions for filtering UV radiation, these compositions are also called sunscreen compositions or sunscreen compositions. By "water-in-oil emulsion" is meant a composition consisting of an oily dispersant continuous phase and an aqueous dispersed discontinuous phase.

By "cosmetically acceptable" is meant compatible with the skin and / or its integuments or mucous membranes which has a pleasant color, smell and feel and which does not generate unacceptable discomfort (tingling, tightness, redness), likely to divert the consumer from using this composition. By "average size" of the particles is meant the parameter D [4.3] measured using a "Mastersizer 2000" granulometer (Malvern). The light intensity scattered by the particles as a function of the angle at which they are illuminated is converted into a size distribution according to Mie's theory. The parameter D [4.3] is measured; it is the average diameter of the sphere having the same volume as the particle. For a spherical particle, we often speak of "average diameter".

"Elementary average size" means the size of non-aggregated particles. PR91893 / KLP / SF / cf 40 Gamma-Oryzanol Gamma-Oryzanol has the structure: and as CAS No. 11042-64-1. It is a ferulic acid ester and a terpene alcohol of formula: Gamma-oryzanol is derived from rice bran. It is extracted with organic solvent. Then it is concentrated, recrystallized and dried. The raw material obtained is a white powder.

Preferably, the plant extract will contain gamma-oryzanol at contents ranging preferably from 1 to 100% by weight and more preferably from 10 to 1000/0 by weight and even more particularly from 50 to 1000/0 by weight. weight relative to the total weight of the extract.

It is commercially available under the name Oryzanol by TSUNO RICE FINE CHEMICALS, Gamma Orizanol by IKEDA or Oryzanolgamma V from ICHIMARU PHARCOS.

FILTRATION COMPOSITE PARTICLES Composite particles A used in accordance with the present invention comprise a matrix and an inorganic UV filter. The matrix comprises one or more organic and / or inorganic materials.

The inorganic UV filter is generally selected from metal oxides, preferably titanium oxide, zinc oxide, iron oxide or mixtures thereof and more particularly from titanium dioxide, zinc oxide and mixtures thereof. In a particularly preferred manner, the inorganic UV filter is TiO2.

These metal oxides can be in the form of particles, of average elementary size generally less than 200 nm. Advantageously, the metal oxide particles used have an average elementary size of less than or equal to 100 nm.

These metal oxides may also be in the form of layers, preferably multilayers of average thickness generally less than 200 nm.

According to a first variant, the composite particles contain a matrix comprising an organic and / or inorganic material in which particles of inorganic UV filter are included. According to this embodiment, the matrix has inclusions and inorganic UV filter particles are placed in the inclusions of the matrix.

According to a second variant, the composite particles A contain a matrix made of an organic and / or inorganic material covered with at least one inorganic UV filter layer that can be connected to the matrix by means of a binder.

According to a third variant, the composite particles A contain an inorganic UV filter coated with at least one layer of an organic and / or inorganic material.

The matrix may also be formed of one or more organic or inorganic materials. It can then be a continuous phase of materials such as an alloy, that is to say a continuous phase in which the materials are no longer dissociable, or a discontinuous phase of materials, for example consisting of an organic or inorganic material covered with a layer of another organic or inorganic material different.

The mass content of metal oxide in the particles of the invention is between 10/0 and 700/0, preferably between 20/0 and 650/0, and more preferably between 3% and 60%.

According to a variant, in particular when the composite particles A comprise a matrix covered with a UV filter layer, the composite particles may also be covered with an additional coating, in particular chosen from biodegradable or biocompatible materials, lipid materials such as for example, surfactants or emulsifiers, polymers, and oxides.

The particles A filtering composites may be chosen from those of spherical shape, those of non-spherical shape or mixtures thereof.

By "spherical" is meant that the particle has a sphericity index, that is to say the ratio between its largest diameter and smaller diameter, less than 1.2.

"Non-spherical" means particles in three dimensions (length, width, thickness or height) for which the ratio of the largest dimension PR91893 / KLP / SF / cf large to the smallest dimension is greater than 1.2. . The dimensions of the particles of the invention are evaluated by scanning electron microscopy and image analysis. They comprise parallelepipedal (rectangular or square surface), discoidal (circular surface) or ellipsoidal (oval surface) particles, characterized by three dimensions: a length, a width and a height. When the shape is circular, the length and width are identical and correspond to the diameter of a disc, while the height corresponds to the thickness of the disc. When the surface is oval, the length and the width respectively correspond to the major axis and the minor axis of an ellipse and the height corresponds to the thickness of the elliptical disk formed by the wafer. When it is a parallelepiped, the length and the width may be of identical or different dimensions: when they are of the same size, the shape of the surface of the parallelepiped is square; otherwise, the shape is rectangular. As for the height, it corresponds to the thickness of the parallelepiped.

Preferably, the content of composite particles of the composition according to the invention ranges from 1 to 700/0, preferably from 1.5 to 45%, preferably from 2 to 20% by weight relative to the total weight of the composition. cosmetic. Particles A spherical filter composites

The inorganic materials usable in the matrix of the spherical composite particles according to the present invention are selected from the group consisting of mica, synthetic mica, talc, sericite, boron nitride, glass, calcium carbonate, barium sulfate, hydroxyapatite, silica, silicate, magnesium sulfate, magnesium carbonate, magnesium trisilicate, aluminum oxide, aluminum silicate, calcium silicate, phosphate calcium, magnesium oxide, bismuth oxychloride, kaolin, hydrotalcite, mineral clays, synthetic clays and mixtures thereof.

The organic materials that can be used to form the matrix are chosen from the group formed by poly (meth) acrylates, polyamides, silicones, polyurethanes, polyethylenes, polypropylenes, polystyrenes, polyhydroxyalkanoates, polycaprolactams, poly (butylene) succinates, polysaccharides, polypeptides and polyvinylalcohols. , polyvinyl resins, fluoropolymers, waxes, polyesters, polyethers, and mixtures thereof.

Preferably, the matrix of the spherical composite particle contains a material 40 or a mixture of materials chosen from: - SiO 2, - polymethyl methacrylate, - copolymers of styrene and an alkyl (meth) acrylate derivative in C1 / C5, polyamides such as nylon. Composite particles A in spherical form are characterized by a mean diameter of between 100 nm and 30 μm, preferably between 200 nm and PR91893 / KLP / SF / cf20 of 20 μm and more preferably between 300 nm and 10 μm, advantageously between 500 nm and 10pm.

According to a first variant, the spherical composite particles contain a matrix comprising an organic and / or inorganic material in which particles of inorganic UV filter are included.

According to this first variant, the particles A of inorganic UV filter are characterized by an average elementary size generally less than 200 nm. Advantageously, the metal oxide particles used have an average elementary size of less than or equal to 100 nm.

By way of composite particles corresponding to this variant, mention may be made of the Sunsil TIN 50 and Sunsil TIN 40 products marketed by SUNJIN CHEMICAL. These spherical composite particles of average size between 2 and 7 pm are formed of TiO2 encapsulated in a silica matrix.

The following particles may also be mentioned: spherical composite particles having a mean size of between 4 and 8 μm, containing TiO2 and SiO2 with the trade name Eospoly TR marketed by the company Creations Couleurs, composite particles containing TiO 2 and a matrix of styrene / alkyl acrylate copolymer sold under the name Eospoly UV TR22 HB 50 by the company Couleurs Couleurs, 25-composite particles containing TiO2 and ZnO and a PMMA matrix of the trade name Sun PMMA-T50 sold by the company SUNJIN Chemical.

According to a second variant, the spherical composite particles contain a matrix of an organic and / or inorganic material covered with at least one inorganic UV filter layer connected to the matrix by means of a binder.

According to this second variant, the average thickness of the inorganic UV filter layer is generally between 1 and 200 nm, preferably between 10 and 100 nm.

The spherical composite particles A used according to the invention have a size of between 100 nm and 30 μm, preferably between 300 nm and 20 μm, and even more preferably between 500 nm and 10 μm. Among the composite particles A that can be used according to the invention also includes spherical composite particles containing TiO2 and SiO2 of the trade name STM ACS-0050510, supplied by JGC Catalysts and Chemical.

According to a third variant, the spherical composite particles A contain an inorganic UV filter covered with at least one layer of an organic and / or inorganic material. According to this third variant, the inorganic UV filter particles are characterized by an average elementary size generally of between 1 and 200 nm. Advantageously, the metal oxide particles used have an average elementary size of between 10 nm and 100 nm.

The spherical composite particles A used according to the invention have a size of between 100 nm and 30 μm, preferably between 300 nm and 20 μm, and even more preferably between 500 nm and 10 μm.

Non-spherical filtering particles A The organic materials that can be used to form the matrix of non-spherical filtering particles A are chosen from the group formed by poly (meth) acrylates, polyamides, silicones, polyurethanes, polyethylenes, polypropylenes, polystyrenes, polyhydroxyalkanoates, polycaprolactams, poly (Butylene) succinates, polysaccharides, polypeptides, polyvinylalcohols, polyvinyl resins, fluoropolymers, waxes, polyesters, polyethers, and mixtures thereof.

Preferably, the organic materials that can be used include: - triethoxycaprylylsilane, - acrylic polymers such as polymethyl methacrylate and acrylic copolymers comprising other types of monomers such as styrene, - polyamides such as nylon.

The inorganic materials that can be used in the matrix of non-spherical composite particles A are chosen from the group formed by mica, synthetic mica, talc, sericite, boron nitride, glass, calcium carbonate and barium sulphate. , hydroxyapatite, silica, silicate, magnesium sulfate, magnesium carbonate, magnesium trisilicate, aluminum oxide, aluminum silicate, calcium silicate, calcium phosphate, magnesium oxide, bismuth oxychloride, kaolin, hydrotalcite, mineral clays, synthetic clays and mixtures thereof. Preferably, these inorganic materials are chosen from: - silica, - talc, - mica, - alumina.

The nonspherical composite particles A of the invention are characterized by three dimensions, of which: the smallest is greater than 100 nm, preferably 300 nm and even more preferably 500 nm, the largest is less than 30 micrometers, preferably 20 micrometers, and even better 10 micrometers.

The ratio of the largest to the smallest dimension is greater than 1.2. PR91893 / KLP / SF / cf The dimensions of the particles A of the invention are evaluated by scanning electron microscopy and image analysis.

The non-spherical filtering composite A particles that may be used according to the invention will preferably be platelet-forming.

By "platelet" is meant a parallelepipedal shape. They can be smooth, rough, or porous.

The platelet composite particles A preferably have an average thickness of between 100 nm and 10 μm, the average length is generally between 500 nm and 30 microns and the average width between 500 nm and 30 microns.

The thickness is the smallest of the dimensions, the width the average dimension, and the length is the largest of the dimensions.

According to a first variant, the composite particles A contain a matrix 20 comprising an organic and / or inorganic material in which particles of inorganic UV filter are included.

According to this first variant, the particles of inorganic UV filter are characterized by an average elementary size generally less than 200 nm. Advantageously, the metal oxide particles used have an average elementary size of less than or equal to 100 nm.

According to a second variant, the composite particles A contain a matrix made of an organic and / or inorganic material covered with at least one inorganic UV filter layer connected to the matrix by means of a binder.

According to this second variant, the average thickness of the inorganic UV filter layer is generally about ten nanometers. The average thickness of the inorganic UV filter layer is advantageously between 1 and 200 nm, preferably between 10 and 200 nm.

According to a third variant, the non-spherical composite particles A contain an inorganic UV filter coated with at least one layer of an organic and / or inorganic material. According to this third variant, the particles of inorganic UV filter are characterized by an average elementary size generally between 1 and 200 nm. Advantageously, the metal oxide particles used have an average elementary size of between 10 nm and 100 nm.

The non-spherical composite particles A used according to the invention have a size of between 100 nm and 30 μm, preferably between 500 nm and 10 μm. PR91893 / KLP / SF / cf. Preferably, the inorganic UV filter used in the composite particle A is chosen from metal oxides, in particular from titanium, zinc or iron oxides and more particularly titanium dioxide (TiO 2).

Preferably, the matrix of the composite particle contains a material or a mixture of materials chosen from: - SiO 2, - alumina, - mica, - the mixture alumina / triethoxycaprylylsilane, - talc, - PMMA (polymethyl methacrylate) , - Nylon.

More preferably, the matrix of the composite particle A consists of a material or a mixture of materials chosen from: - alumina, - the mixture alumina / triethoxycaprylylsilane - talc. - Silica - Mica.

Among the composite particles A that may be used according to the invention, mention may also be made of the following particles: TiO 2 -containing composite particles and a MATLAKE OPA alumina matrix marketed by the company SENSIENT LCW; composite particles containing TiO 2 and a matrix alumina / triethoxycaprylylsilane of the trade name MATLAKE OPA AS sold by the company SENSIENT LCW, - Composite particles containing ultrafine TiO2 particles deposited on the surface of talc platelets with the commercial name TTC 30 marketed by the company MYOSHI KASEI. Composite particles containing ultrafine TiO2 particles deposited on the surface of talc platelets with the trade name SILSEEM MISTYPEARL YELLOW marketed by the company NIHON KOKEN KOGYO (NKK)

Preferably, use will instead be made of platelet composite A particles.

PARTICLES B OF INORGANIC UV FILTER TREATED HYDROPHOBIC BY OIL OR NATURAL WAX According to a particularly preferred form of the invention, the Applicant has established that the filtering efficiency obtained with the combination of filtering particles A with gamma-orizanol such as previously described could be improved by using in addition at least hydrophobic inorganic PR91893 / KLP / SF / cf UV filter particles B treated with at least one oil or wax of natural origin.

The inorganic UV filter constituting these particles B is generally chosen from metal oxides, preferably titanium oxide, zinc oxide, iron oxide or their mixtures and more particularly from titanium dioxide, zinc oxide and mixtures thereof. In a particularly preferred manner, the inorganic UV filter is TiO2.

These metal oxides can be in the form of particles, of average elementary size generally less than 200 nm. Advantageously, the metal oxide particles used have an average elementary size of less than or equal to 100 nm.

These metal oxides may also be in the form of layers, preferably multilayers of average thickness generally less than 200 nm.

The oil of natural origin used to treat said particles B so as to render them hydrophobic is preferably chosen from jojoba esters which are in general a complex mixture of esters produced by transesterification / interesterification from Jojoba oil. (Simmondsia Chinensis) or esters from hydrogenated jojoba oil or mixtures thereof.

The wax of natural origin used to treat said particles B so as to render them hydrophobic is preferably a Jojoba wax obtained which is the final product of the controlled hydrogenation of Jojoba oil.

Hydroxyl esters of the jojoba esters, such as the commercial product sold under the name FLORAESTER 70 by the company Floratee, will be used more particularly.

Hydrophobic treated inorganic UV filter particles B with an oil or wax of natural origin are described and synthesized in patent application US20100136065.

Alumina-treated titanium dioxide particles and jojoba esters INCI TITANIUM DIOXIDE (and) ALUMINA (and) JOJOBA ESTERS will be used more particularly as the products sold under the name MPT-40154-NJE8 or TTO- NJE8 by the company KOBO.

Preferably, the content of particles B of the composition according to the invention is between 0.10 / 0 and 200/0, preferably between 0.50 / 0 and 100/0 by weight and even more preferably between 0.50 / 0 and 100/0. Relative to the total weight of the composition. PR91893 / KLP / SF / cf MODIFIED HYDROPHOBIC UV INORGANIC FILTER C PARTICLE OIL DISPERSION

According to a particularly preferred form of the invention, the applicant has found that the filtering efficiency obtained with the combination of filtering particles A and B as described above could be further improved by using in addition an oily dispersion of particles C hydrophobic modified inorganic UV filter having an average size greater than 100 nm; said particles C being different from particles B.

The inorganic UV filter constituting these particles C is generally chosen from metal oxides, preferably titanium oxide, zinc oxide, iron oxide or their mixtures and more particularly from titanium dioxide, zinc oxide and mixtures thereof. In a particularly preferred manner, the inorganic UV filter is TiO2.

These metal oxides preferably have an average elementary size generally between 100 nm and 200 nm.

Particles C of inorganic filter, in particular hydrophobic modified metal oxide, may be coated by undergoing 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), alkanolamines, silicon oxides, metal oxides or sodium hexametaphosphate.

In a 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 units 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.

Preferably, metal oxide particles coated with at least one linear or branched C12-C18 fatty acid and more particularly stearic acid will be used.

Hydrophobic modified inorganic UV filter particles C can also be treated with other surfactants, in particular with cerium oxide, alumina, silica, aluminum compounds, compounds and the like. silicon, or mixtures thereof. PR91893 / KLP / SF / cf The oil present in the oily dispersion of particles C of inorganic UV filter is preferably selected from C12-C15 alkyl benzoates or triglycerides such as Caprylic / Capric Triglyceride. The oily dispersions of particles C of hydrophobic modified inorganic UV filter may further comprise at least one dispersing agent such as polyhydrostearic acid.

More particularly, the oily dispersions of TiO 2 C particles treated with a mixture of stearic acid, polyhydroxystearic acid and alumina are as follows: TITAN IUM DIOXIDE (and) C12-C15 Alkyl Benzoate (and) POLYHYDROXYSTEARIC ACID ( and) STEARIC ACID (and) ALUMINA as the product sold under the trade name SOLVEIL XT-100 by the company CRODA; - TITANIUM DIOXIDE (and) CAPRYLIC / CAPRIC TRIGLYCERIDE (and) POLYHYDROXYSTEARIC ACID (and) STEARIC ACID (and) ALUMINA as the product sold under the trade name SOLVEIL XT-300 by the company CRODA;

Preferably, the oily dispersion content of particles C of the composition according to the invention is between 0.10 / 0 and 300/0, preferably between 0.50 / 0 and 200/0 by weight and even more preferably between 10/0 and 100/0 relative to the total weight of the composition.

25 POLAR OILS

According to a particularly preferred form of the invention, the compositions may comprise at least one anhydrous phase comprising at least one polar oil.

The term "anhydrous phase" means any phase comprising less than 30% by weight of water, or even less than 10% by weight of water, or even more particularly less than 0.50% by weight of water. relative to the total weight of the composition or even free of water.

By "polar oil" is meant any lipophilic compound having at 25 ° C a bd solubility parameter characteristic of dispersive interactions greater than 16 and a solubility parameter 8p characteristic of polar interactions greater than strictly 0. The solubility parameters bd and 8p are defined according to Hansen's classification. For example, these polar oils may be selected from esters, triglycerides, ethers.

The definition and calculation of the solubility parameters in the HANSEN three-dimensional solubility space are described in the article by C. M. HANSEN: "The three dimensional solubility parameters" J. Paint Technol. 39, 105 (1967). According to this Hansen space: - Vp characterizes the LONDON dispersion forces resulting from the formation of dipoles induced during molecular shocks; PR91893 / KLP / SF / cf 45 - 8p characterizes the DEBYE interaction forces between permanent dipoles as well as the KEESOM interaction forces between induced dipoles and permanent dipoles; bh characterizes the specific interaction forces (hydrogen bond, acid / base, donor / acceptor type, etc.); and - ba is determined by the equation: ba = (bp2 + Sh2) 'i2. The parameters 8p, 8h, 8p and ba are expressed in (J / cm3) '2.

The polar oil may be a hydrocarbon, silicone and / or fluorinated, volatile or non-volatile oil.

These oils can be of vegetable, mineral or synthetic origin.

By "polar hydrocarbon oil" is meant an oil formed essentially or even consisting of carbon and hydrogen atoms, and optionally oxygen, nitrogen, and not containing a silicon atom or of fluorine. It may contain alcohol, ester, ether, carboxylic acid, amine and / or amide groups.

Silicone oil is understood to mean an oil containing at least one silicon atom, and in particular containing Si-O groups.

By fluorinated oil is meant an oil containing at least one fluorine atom.

By fluorinated oil is meant an oil containing at least one fluorine atom. Preferably, the polar oil according to the invention has a surface tension greater than 10 mN / m at 25 ° C. and at atmospheric pressure.

Surface activity is measured by static tensiometry using the Du Noüy ring.

The principle of measurement is as follows (measurement carried out at 25 ° C, at atmospheric pressure).

The weight of the ring is neutralized by a tare. The ring is immersed entirely in the liquid to be evaluated, then removed very slowly until the force reaches its maximum. From this maximum force Finax, the surface tension is calculated according to the equation:

40 6 = Finax / 4nR torr (r, R, p)

with torr: correction factor of the ring according to the geometry of the ring and the density p.

The parameters r and R respectively denote the inner and outer radii of the ring. PR91893 / KLP / SF / cf According to a first embodiment, the polar oil may be a non-volatile oil. In particular, the non-volatile polar oil may be chosen from the following list of oils, and their mixtures: polar hydrocarbon oils such as phytostearyl esters, such as phytostearyl oleate, isostearate of physostearyl and Iauroyl glutamate / octyldodecyl / phytostearyl (AJINOMOTO, ELDEW PS203), triglycerides consisting of esters of fatty acids and of glycerol, in particular whose fatty acids may have chain lengths ranging from C4 to C36, and in particular from C18 to C36, these oils being linear or branched, saturated or unsaturated; these oils may in particular be heptanoic or octanoic triglycerides, wheat germ, sunflower seed, grape seed oil, sesame seed (820.6 g / mol), maize, apricot, castor oil, shea butter, avocado, olive, soya, sweet almond, palm, rapeseed, cotton, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, squash, black currant, evening primrose, millet, barley, quinoa, rye, safflower, bancoulier, passionflower, muscat rose; shea butter; or alternatively caprylic / capric acid triglycerides, such as those sold by the company STEARINERIES DUBOIS or those sold under the names MIGLYOL 810®, 812 ° and 818 ° by the company DYNAMIT NOBEL; synthetic ethers having from 10 to 40 carbon atoms, such as dicaprylyl ether, hydrocarbon esters of formula RCOOR 'in which RCOO represents a carboxylic acid residue containing from 2 to 40 carbon atoms, and R' represents a hydrocarbon chain containing from 1 to 40 carbon atoms, such as cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, palmitate 2-ethyl-hexyl, isopropyl stearate or isostearate, isostearyl isostearate, octyl stearate, diisopropyl adipate, heptanoates, and especially isostearyl heptanoate, 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, diheptanoate of polyethylene glycol, diethyl 2 propylene glycol hexanoate and mixtures thereof, C12-C15 alcohol benzoates, hexyl Iaurate, neopentanoic acid esters such as isodecyl neopentanoate, isotridecyl neopentanoate, neopentanoate; isostearyl, octyl-2-dodecyl neopentanoate, esters of isononanoic acid such as isononyl isononyl ester, isotridecyl isononate, octyl isononanoate, oleyl eucrate; Iauroyl isopropyl sarcosinate, diisopropyl sebaccate, isoketyl stearate, isodecyl neopentanoate, isostearyl behenate, myristyl myristate; the polyesters obtained by condensation of dimer and / or trimer of unsaturated fatty acid and of diol, such as those described in patent application FR 0 853 634, such as in particular dilinoleic acid and 1,4-diol; butanediol. Mention may in particular be made of the polymer marketed by Biosynthis under the name Viscoplast 14436H (INCI name: dilinoleic acid / butanediol copolymer), or also the copolymers of polyols and diacid dimers, and their esters, such as Hailuscent ISDA, PR91893. / KLP / SF / cf - polyol esters and pentaerythritol esters, such as dipentaerythritol tetrahydroxystearate / tetraisostearate, - fatty alcohols having 12 to 26 carbon atoms such as octyl dodecanol, 2-butyloctanol, 2 hexyl decanol, 2-undecyl pentadecanol, oleic alcohol; higher C12-C22 fatty acids, such as oleic acid, linoleic acid, linolenic acid, and mixtures thereof; fluorinated oils that may be partially hydrocarbon-based and / or silicate; fatty acids having from 12 to 26 carbon atoms, such as oleic acid; di-alkyl carbonates, the 2 alkyl chains being identical or different, such as dicaprylyl carbonate sold under the name CETIOL CC®, by COGNIS; and non-volatile oils of high molecular weight, for example ranging from 400 to 10,000 g / mol, in particular from 650 to 10,000 g / mol, for example: i) copolymers of vinylpyrrolidone such as vinylpyrrolidone / 1-copolymer; hexadecene, ANTARON V-216 sold or manufactured by ISP (MW = 7300 g / mol), -ii) esters such as: a) linear fatty acid esters having a total carbon number ranging from 35 to 70 such as pentaerythrityl tetrapelargonate (MW = 697.05 g / mol), b) hydroxylated esters such as polyglycerol-2 triisostearate (MW = 965.58 g / mol), c) aromatic esters such as tridecyl trimellitate (MW = 757.19 g / mol), C12-C15 alcohols benzoate, benzoic acid 2-phenyl ethyl ester, butyl octyl salicylate, d) fatty alcohol or fatty acid esters branched C24-C28 such as those described in application EP-AO 955 039, and in particular triisoarachidyl citrate (MW = 1033.76 g / mol), the head pentaerythrityl reasononanoate (MW = 697.05g / mol), glyceryl triisostearate (MW = 891.51 g / mol), glyceryl tri-2-tetradecanoate (MW = 1143.98 g / mol), pentaerythrityl tetraisostearate ( MW = 1202.02 g / mol), polyglyceryl-2 tetraisostearate (MW = 1232.04 g / mol) or pentaerythrityl tetradecyl-2 tetradecanyl (MW = 1538.66 g / mol), e) the esters and diol dimer and mono- or dicarboxylic acid polyesters, such as dimer diol fatty acid esters and diol dimer and dicarboxylic acid dimer esters, such as Lusplan DD-DA5® and Lusplan DD- DA7® marketed by the company NIPPON FINE CHEMICAL and described in the application US 2004-175338, the contents of which are incorporated herein by reference - and mixtures thereof.

The polar oil is preferably chosen from C12-C15 alcohols benzoate, diisopropyl sebaccate, lauroyl isopropyl sarcosinate, dicaprylyl carbonate, benzoic acid 2-phenyl ethyl ester and butyl octyl. salicylate, octyl-2-dodecyl neopentanoate, dicaprylyl ether, isoketyl stearate, isodecyl neopentanoate, isononyl isononate, isopropyl myristate, isopropyl palmitate, PR91893 / KLP / SF / cf isostearyl behenate, myristyl myristate, octylpalmitate, and tridecyltrimillitate. Preferably, the polar oil is a benzoate of C12-C15 alcohols.

The mass content of polar oil relative to the total weight of the composition is between 100/0 and 1000/0; preferably between 150/0 and 900/0.

The "fatty phase" of the compositions according to the invention may also comprise a wax, an apolar oil or their mixtures.

Apolar oils and waxes conventionally used in cosmetic compositions can be used in the compositions according to the present invention.

The compositions according to the invention may also comprise additional cosmetic and / or dermatological active ingredients.

The skilled person will choose said active (s) depending on the desired effect on the skin, hair, eyelashes, eyebrows, nails. Additives

The compositions in accordance with the present invention may furthermore comprise conventional cosmetic adjuvants, chosen in particular from organic solvents, ionic or nonionic, hydrophilic or lipophilic thickeners, softeners, humectants, opacifiers, stabilizers, emollients, silicones, anti-foam agents, perfumes, preservatives, anionic, cationic, nonionic, zwitterionic or amphoteric surfactants, fillers, polymers, propellants, alkalinizing or acidifying agents or any other ingredient usually used in the cosmetic and / or dermatological field.

Among the organic solvents, mention may be made of lower alcohols and polyols. These may be selected from glycols and glycol ethers such as ethylene glycol, propylene glycol, butylene glycol, dipropylene glycol or diethylene glycol.

As hydrophilic thickeners, mention may be made of carboxyvinyl polymers such as Carbopols (Carbomers) and Pemulen (acrylate / C10-C30-alkyl acrylate copolymer); polyacrylamides, for example crosslinked copolymers sold under the names Sepigel 305 (CTFA name: polyacrylamide / C13-C14 isoparaffin / Laureth 7) or Simulgel 600 (CTFA name: acrylamide / sodium acryloyldimethyltaurate copolymer / isohexadecane / polysorbate 80) by the company Seppic ; polymers and copolymers of 2-acrylamido-2-methylpropanesulphonic acid, optionally cross-linked and / or neutralized, such as Poly (2-acrylamido-2-methylpropanesulphonic acid) marketed by the company Clariant under the trademark "Hostacerin AMPS" ( CTFA name: ammonium polyacryloyldimethyl taurate or SIMULGEL 800 sold by PR91893 / KLP / SF / cf20 the company SEPPIC (CTFA name: sodium polyacryolyldimethyl taurate / polysorbate 80 / sorbitan oleate), copolymers of 2-acrylamido-2-methylpropanesulfonic acid and hydroxyethyl acrylate such as SIMULGEL NS and SEPINOV EMT 10 sold by the company SEPPIC, cellulose derivatives such as hydroxyethylcellulose, polysaccharides and especially gums such as Xanthan gum, and mixtures thereof.

Mention may be made, as lipophilic thickeners, of synthetic polymers such as the poly C10-C30 alkyl acrylates sold under the name "IPA INTELIMER 13-1" and "INTELIMER IPA 13-6" by the company Landec, or modified clays such as I hectorite and its derivatives, such as the products marketed under the Bentone name.

The compositions according to the invention may also comprise, in addition, additional cosmetic and dermatological active ingredients.

Among the active ingredients, mention may be made of: vitamins (A, C, E, K, PP) and their derivatives or precursors, alone or in mixtures, antioxidant agents; - anti-radical agents; anti-glycation agents; the soothing agents; the NO-synthase inhibitors; agents stimulating the synthesis of dermal or epidermal macromolecules and / or preventing their degradation; agents stimulating the proliferation of fibroblasts; agents stimulating the proliferation of keratinocytes; - muscle relaxants; tensing agents, mattifying agents, keratolytic agents, desquamating agents; - Moisturizing agents such as polyols such as glycerin, butylene glycol, propylene glycol. anti-inflammatory agents; agents acting on the energetic metabolism of cells; insect repellents; antagonists of substances P or CRGP. - anti-hair loss and / or hair regrowth agents - anti-wrinkle agents. Of course, one skilled in the art will take care to choose the optional additional compound (s) mentioned above and / or their amounts in such a way that the advantageous properties intrinsically attached to the compositions in accordance with the invention are not, or substantially, not, altered by the addition or additions envisaged. PR91893 / KLP / SF / cf The skilled person will choose the active agent (s) depending on the desired effect on the skin, the hair, the eyelashes, the eyebrows, the nails.

Qalenic Forms The aqueous compositions according to the invention can be prepared according to the techniques well known to those skilled in the art.

They may be in the form of lotion, milk, cream, gel-cream, aqueous or hydroalcoholic gel, cream or mousse.

They may additionally comprise at least one fatty phase and be in the form of an emulsion, simple or complex (O / W, W / O, O / W / H or W / O / W) such as milk; a cream, a cream gel. They may optionally be packaged in an aerosol and be in the form of a spray.

Preferably, the compositions according to the invention are in the form of an oil-in-water or water-in-oil emulsion.

The emulsification processes that can be used are of the pale or helix type, rotor-stator and high pressure homogenizer (HHP).

In order to obtain stable emulsions with a low level of emulsifying compounds (oil / emulsifier ratio> 25), it is possible to disperse in concentrated phase and then to dilute the dispersion with the remainder of the aqueous phase.

It is also possible, by HHP (between 50 and 800 bar), to obtain stable dispersions with drop sizes down to 100 nm.

The emulsions generally contain at least one emulsifier chosen from amphoteric, anionic, cationic or nonionic emulsifiers, used alone or as a mixture. The emulsifiers are suitably selected depending on the emulsion to be obtained (W / O or HIE). The emulsions may also contain other types of stabilizers, for example fillers, gelling or thickening polymers.

For the HIE emulsions, examples of emulsifiers which may be mentioned include nonionic emulsifiers such as oxyalkylenated (more particularly polyoxyethylenated) fatty acid esters of glycerol; oxyalkylenated fatty acid and sorbitan esters; oxyalkylenated fatty acid esters (oxyethylenated and / or oxypropylenated) such as the PEG-100 Stearate / Glyceryl Stearate mixture marketed for example by the company ICI under the name Arlacel 165; Oxyalkylenated (oxyethylenated and / or oxypropylenated) fatty alcohol ethers; sugar esters such as sucrose stearate; fatty alcohol and sugar ethers, especially alkylpolyglucosides (APG) such as decylglucoside and laurylglucoside sold for example by Henkel under the respective PR91893 / KLP / SF / cf5 denominations Plantaren 2000 and Plantaren 1200, cetostearylglucoside optionally in a mixture with cetostearyl alcohol, sold for example under the name Montanov 68 by Seppic, under the name Tegocare CG90 by Goldschmidt and under the name Emulgade KE3302 by Henkel, and arachidyl glucoside, for example in the form of a mixture of arachidic and behenic alcohols and arachidylglucoside sold under the name Montanov 202 by the company Seppic. According to one particular embodiment of the invention, the mixture of the alkylpolyglucoside as defined above with the corresponding fatty alcohol may be in the form of a self-emulsifying composition, as described, for example, in WO- A-92/06778.

Among the other emulsion stabilizers, it is also possible to use isophthalic acid or sulphoisophthalic acid polymers, and in particular phthalate / sulphoisophthalate / glycol copolymers, for example the diethylene glycol / phthalate / isophthalate / 1,4-diol copolymer. cyclohexane-dimethanol (INCI name: Polyester-5) sold under the names "Eastman AQ Polymer" (AQ35S, AQ38S, AQ55S, AQ48 Ultra) by the company Eastman Chemical.

Among the other emulsion stabilizers, mention may also be made of hydrophobically modified 2-acrylamido-2-methylpropanesulfonic acid polymers such as those described in patent application EP1069142.

In the case of an emulsion, the aqueous phase thereof may comprise a nonionic vesicular dispersion prepared according to known methods (Bangham, Standish and Watkins, J. Mol Biol 13, 238 (1965)). FR 2 315 991 and FR 2 416 008).

As emulsifying surfactants that can be used for the preparation of W / O emulsions, mention may be made, for example, of emulsifying surfactants having an HLB of less than or equal to 5 at 25 ° C.

The term HLB (Hydrophilic Lipophilic Balance) is well known to those skilled in the art, and refers to the hydrophilic-lipophilic balance of a surfactant. The HLB of the surfactant (s) used according to the invention is HLB according to GRIFFIN defined in J. Soc. Cosm. Chem. 1954 (Volume 5), pages 249-256.

Non-limiting examples of HLB surfactants up to and including 5 are in particular given in Mc Cutcheon's Emulsifiers & Detergents, 1998 International Edition, MC Publishing Company, chapter HLB Index.

As examples of W / O emulsifying surfactants, mention may be made of alkyl esters 45 or ethers of sorbitan, of glycerol, of polyol, of glycerol or of sugars; silicone surfactants such as dimethicone copolyols such as the mixture of cyclomethicone and dimethicone copolyol, sold under the name "DC 5225 C" by Dow Corning, and alkyl dimethicone copolyols such as PR91893 / KLP / SF / cf35 Laurylmethicone copolyol sold under the name "Dow Corning 5200 Formulation Aid" by the company Dow Corning; cetyl dimethicone copolyol such as the product sold under the name Abil EM 90R by Goldschmidt and the mixture of cetyl dimethicone copolyol, polyglycerol isostearate (4 moles) and hexyl laurate sold under the name ABIL WE 09 by the company Goldschmidt. It is also possible to add one or more coemulsifiers, which advantageously may be chosen from the group comprising the alkylated polyol esters.

Non-silicone emulsifiers, in particular the alkyl esters or ethers of sorbitan, of glycerol, of polyol or of sugars, are preferred.

Examples of alkylated polyol esters that may be mentioned include polyethylene glycol esters such as PEG-30 dipolyhydroxystearate, such as the product marketed under the name Arlacel P135 by the company ICI.

Examples of glycerol and / or sorbitan esters that may be mentioned are polyglycerol isostearate, such as the product sold under the name Isolan GI 34 by the company Goldschmidt; sorbitan isostearate, such as the product sold under the name Arlacel 987 by the company ICI; sorbitan isostearate and glycerol, such as the product sold under the name Arlacel 986 by the company ICI, and mixtures thereof.

According to a particularly preferred form of the invention, the compositions are in the form of a water-in-oil emulsion.

As W / O emulsifiers, polyglycerolated diesters and polyesters, chosen in particular from: - Polyglyceryl-3-Polyricinoleate (Akoline PGPR sold by Aarhus Karlshamn AB), - Polyglyceryl-4-Polyricinoleate (Sunsoft 818DG from Taiyo Kagaku Company, Ltd.), - Polyglyceryl-S-Polyricinoleate (Sunsoft AZ-18 from Taiyo Kagaku Company, Ltd.), Polyglyceryl-6-Polyricinoleate (Nikkol Hexaglyn PR-15 from Nikko Chemicals Co., Ltd., PELEMOL 6GPR of Phoenix Chemical, Inc., Polycare P 5 of Biogenico World Wide, Sunsoft 818H, 818SK, 818TY of Taiyo Kagaku Company, Ltd.) - Polyglyceryl 10 Polyricinoleate (Phytoglyn AO from Maruzen 40 Pharmaceuticals Co., Ltd.) - Polyglyceryl-2 Diisostearate (Prisorine 3792 from Croda Europe, Ltd., Dermol DGDIS from Alzo / Bern) Chemical) - Polyglyceryl-3 -Diisostearate (Lameform TGI sold by the company COGNIS), - Polyglyceryl-6 Diisostearate (Emalex DISG-6 from the company Nihon Emulsion 45 Company, Ltd.) - Polyglyceryl-10 Diisostearate (Emalex DISG-10 from the company Nihon Emulsion Company, Ltd.). ) and their mixtures PR91893 / KLP / SF / cf A mixture of Polyglyceryl-3-Polyricinoleate and Polyglyceryl-3-Diisostearate will be used even more particularly.

The following examples serve to illustrate the invention. Examples

The following compositions 1 to 2 were produced. The ingredients are used in weight percentage of active ingredient relative to the total weight of the composition. Phase Ingredients EX 1 EX2 (except invention) A ~ TOCOPHEROL 0.50 0.50 SIMMONDSIA CHINENSIS (JOJOBA) SEED OIL 8.00 8.00 POLYGLYCERYL-3 DIISOSTEARATE 2.00 2.00 BEESWAX 0.50 0.50 ORYZANOL ( TSUNO RICE FINE CHEMICALS) - 3.00 DICAPRYLYL ETHER 8.00 8.00 POLYGLYCERYL-3 POLYRICINOLEATE 2.00 2.00 TITANIUM DIOXIDE (and) POLYHYDROXYSTEARIC ACID A2 (and) ALUMINA (and) STEARIC ACID (and) CAPRYLIC / CAPRIC TRIGLYCERIDE (SOLAVEIL XT 300 CRODA) 3.80 3.80 B ~ SODIUM PHYTATE 0.15 0.15 POTASSIUM SORBATE 0.30 0.30 WATER (QS) 47.01 GLYCERIN 5.00 5.00 SODIUM BENZOATE 0.50 0.50 B2 XANTHAN GUM 0.20 0.20 B3 MAGNESIUM SULFATE 1.50 1.50 B4 CITRIC ACID 0.04 0.04 C TALC (and) TITANIUM DIOXIDE (and) MAGNESIUM STEARATE (and) ALUMINUM HYDROXIDE (TTC MYOSHI) 9,65 9,65 PR91893 / KLP / SF / cf ALUMINUM OXIDE HYDRATED (and) TITANIUM DIOXIDE (and) 5.85 5.85 JOJOBA ESTERS (KOBO MPT-154-NJE8) D ALCOHOL 5.00 5.00 These compositions were evaluated on filtering efficiency

Method of preparing the emulsions: AI is heated to 75/80 ° C (clear solution). At the same time, all BI compounds are weighed into another beaker and stirred under deflocculation until solubilization. B2 is dusted and stirred until solubilization / gelation. B3 and then B4 are added. Introduce B in A emulsifier slowly (1 to 2 minutes 10) to 2000T then 6 to 7min 3000T. It is cooled under butterfly axis. C. is added. At a temperature below 30 ° C., D is added for 5 min.

In vitro evaluation protocol for filtering efficiency. 15 SPF in vitro

The sun protection factor (SPF) is determined according to the "in vitro" method described by B. L. Diffey in J. Soc. Cosmet. Chem. 40, 127-133, (1989). The measurements were carried out using a UV-2000S spectrophotometer from the company Labsphere. Each composition is applied to a rough PMMA plate, in the form of a homogeneous and regular deposit at a rate of 0.6 mg / cm 2.

In vitro PPD index

The UV-A protection index, the PPD (Persistent Pigment Darkening) method, which measures the skin color observed 2 to 4 hours after exposure of the skin to UV-A, is particularly recommended and used. This method has been adopted since 1996 by the Japanese Cosmetic Industry Association (JCIA) as the official test procedure for UV-A labeling of products and is frequently used by testing laboratories in Europe and the United States; (Japan Cosmetic Industry Association Technical Bulletin, Measurement Standards for UVA protection efficacy, Issued November 21, 1995 and efective of January 1, 1996).

The UVAppp sun protection factor (FP UVAppp) is mathematically expressed by the ratio of the UV-A radiation dose required to reach the UV filter pigmentation threshold (MPPDp) with the UV-A radiation dose required for reach the threshold of pigmentation without UV filter (MPPDnp). The measurements were performed according to an in vitro test using a UV-2000S spectrophotometer from the company Labsphere. Each composition is applied to a rough PMMA plate, in the form of a homogeneous and regular deposit at a rate of 0.6 mg / cm 2.

Results

TABLE 1 Examples SPF in vitro PPD in vitro Example 1 SPF = 46 +/- 8 (outside the invention) PPD = 9 +/- 0.8 Example 2 SPF = 69 +/- 12 (invention) PPD = 10.9 + / These results show that the addition of gamma-orizanol in the aqueous composition 2 of the invention based on filtering composite particles makes it possible to increase the efficiency significantly compared to Example 1 without gamma. -orizanol. PR91893 / KLP / SF / cf

Claims (15)

REVENDICATIONS1. Composition containing in a cosmetically acceptable medium a) at least one aqueous phase and b) at least composite particles A of size ranging from 100 nm to 30 μm comprising a matrix and an inorganic UV filter, said inorganic filter being present in a content ranging from from 1% to 70% by weight relative to the total weight of the composite particle and c) gamma-oryzanol or a plant extract containing it. 2. Composition according to claim 1 wherein the matrix comprises one or more organic and / or inorganic materials. 3. Composition according to claim 1 or 2 wherein the composite particles A consist of a matrix comprising an organic and / or inorganic material in which particles of inorganic UV filter are included. The composition of claim 1 or 2 wherein the composite A particles contain a matrix of an organic and / or inorganic material coated with an inorganic UV filter layer connected to the matrix with a binder. 5. Composition according to any one of claims 1 to 4, wherein the inorganic UV filter is selected from metal oxides. 6. Cosmetic composition according to claim 5 wherein the inorganic UV filter is selected from metal oxides, in particular from oxides of titanium, zinc or iron and more particularly titanium dioxide (TiO2). 7. Composition according to any one of claims 1 to 6, wherein the organic materials constituting the matrix are chosen from - acrylic polymers such as polymethyl methacrylate and acrylic copolymers comprising other types of monomers such as styrene polyamides such as nylon. 8. Composition according to any one of claims 1 to 7, wherein the inorganic materials constituting the matrix are selected from - silica, - talc, - mica, - alumina. 9. Composition according to any one of claims 1 to 8, wherein the matrix of composite particles A contains a material or a mixture of materials chosen from: - alumina, - the mixture alumina / triethoxycaprylylsilane - talc, PR91893 / KLP / SF / cf - silica, - mica .. 10. Composition according to any one of claims 1 to 9, wherein the composite particles A are platelet. 11. Composition according to any one of claims 1 to 10, wherein the oily phase comprises at least one polar oil preferably having a surface tension greater than or equal to 10 mN / m at 25 ° C and at atmospheric pressure and more. especially dicaprylyl ether. 12. Composition according to any one of claims 1 to 11, further comprising particles B hydrophobic inorganic UV filter treated with at least one oil or wax of natural origin and optionally in addition to an oily dispersion of particles C filter Hydrophobic modified inorganic UV having an average size greater than 100 nm; said particles C being different from particles B. 13. Composition according to any one of claims 1 to 12, characterized in that it is in the form of a water-in-oil emulsion. 14. Composition according to claim 13, comprising at least one emulsifying surfactant preferably having an HLB of less than or equal to 5 at 25 ° C and more preferably chosen from alkyl esters or ethers of sorbitan, polyol, glycerol or sugars. 15. A composition according to claim 14, wherein the emulsifying surfactant is chosen from polyglycerolated diesters and polyesters and in particular chosen from: Polyglyceryl-3-Polyricinoleate, Polyglyceryl-4-Polyricinoleate, Polyglyceryl-5-Polyricinoleate, Polyglyceryl-6-Polyricinoleate, Polyglyceryl-10-Polyricinoleate, Polyglyceryl-2-Diisostearate, Polyglyceryl-3-Diisostearate, Polyglyceryl-6 Diisostearate, Polyglyceryl-10 Diisostearate, and mixtures thereof, and more particularly a mixture of Polyglyceryl-3-Ricinoleate and Polyglyceryl-3-diisostearate. 27 PR91893 / KLP / SF / cf