L'oreal

Commissariat a L'energie Atomique

Photonetics

L&prime;oreal

Bruno Biatry

Alain J Ribier

Jean-Thierry Simonnet

Eric Lheureux

Guillaume Cassin

Didier J Saint-Leger

Gilbert Boisde

Pascal Richart

Bernard Sebille

Romuald Sanchez

The present invention relates to an emulsion not containing any emulsifying surfactant, in particular to an oil-in-water emulsion not containing any emulsifying surfactant, characterized in that it comprises, especially in a physiologically acceptable medium, at least composite particles comprising a core comprising at least organic or inorganic particles A; said core being covered at the surface, continuously or discontinuously, with an envelope comprising at least organic or inorganic particles B; said particles A and B having different polarities.

Emulsions stabilised by amphiphilic composite particles

Individualized porous particles having a volume-average diameter of less than or equal to 10 &#x3bc;m and a specific surface area of greater than or equal to 1 m/g, and that include at least one cosmetically or pharmaceutically active compound present at least inside the particles.

Porous particles loaded with cosmetically or pharmaceutically active compounds

A method for depigmenting and/or lightening the skin and/or hair, including body hair, including applying a composition including at least one oxidation-sensitive hydrophilic active principle chosen from ascorbic acid and its derivatives and at least one maleic anhydride copolymer, comprising one or more maleic anhydride comonomers and one or more comonomers chosen from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins comprising from 2 to 20 carbon atoms, and styrene, in a physiologically acceptable medium comprising an aqueous phase, to the skin and/or hair.

Cosmetic and/or dermatological use of a composition comprising at least one oxidation-sensitive hydrophilic active principle stabilized by at least one maleic anhydride copolymer

The invention relates to a composition for topical use containing at least one oxidation sensitive hydrophilic active principle and at least one maleic anhydride copolymer, comprising one or more maleic anhydride comonomers and one or more comonomers selected from the group consisting of vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins containing from 2 to 20 carbon atoms, and styrene, in a physiologically acceptable medium containing an aqueous phase. The invention also relates to the use of a maleic anhydride copolymer as defined above for stabilizing an oxidation-sensitive hydrophilic active principle, in particular in the aqueous phase.

Oxidation-sensitive hydrophilic active principle containing composition and use thereof

The invention relates to a composition for topical use containing, in a physiologically acceptable medium having an aqueous phase, at least one oxidation-sensitive hydrophilic active principle and at least one non-crosslinked N-vinylimidazole polymer or copolymer, the active principle and the said polymer or copolymer both being in the aqueous phase.

Cosmetic and/or dermatological composition containing at least one oxidation-sensitive hydrophilic active principle and at least one N-vinylimidazole polymer or copolymer

Nanocapsules based on poly(alkylene adipate), process for their preparation and cosmetic or dermatological compositions containing them

Microcapsules with an aqueous core containing at least one water-soluble cosmetic or dermatological active principle and cosmetic or dermatological compositions containing them

W/O or O/W stable dispersions are formed by mixing an oily phase and an aqueous phase when the dispersion is stabilized with cubic gel particles formed by the combination of two amphiphilic compounds, one of the amphiphilic compounds being capable of forming a lamellar phase in the presence of water, and the other being capable of forming an inverse hexagonal phase in the presence of water.

Cosmetic or dermatological composition in the form of a dispersion of an oily phase and an aqueous phase, stabilized with cubic gel particles

A composition in the form a dispersion for cosmetic, dermatological or pharmaceutical use containing: (a) 60 to 98% by weight of an aqueous phase and (b) 2 to 40% by weight of an oily phase dispersed in the aqueous phase, said oily phase being dispersed and stabilized by using cubic gel particles, said particles being essentially formed of: ( ) 0.1 to 15% by weight relative to the total weight of the composition of at least one unsaturated fatty acid monoglyceride having a C.sub.16 -C.sub.22 unsaturated fatty chain in a mixture with phytanetriol, and 0.05 to 3% by weight relative to the total weight of the composition of a dispersing and stabilizing agent, said agent being a surface active substance, water-soluble at room temperature, containing a linear or branched, saturated or unsaturated, fatty chain having 8 to 22 carbon atoms. Also claimed are methods of making said compositions.

Oily phase in aqueous phase dispersion stabilized by cubic gel particles

Cosmetic or dermatological composition in the form of an aqueous and stable dispersion of cubic gel particles based on 3,7,11,15-tetramethyl-1,2,3-hexadecanetriol or phytanetriol and use thereof for hydrating the skin. This composition essentially comprises:

Cosmetic or dermatological composition in the form of an aqueous and

Composition in the form of a stable dispersion. This composition comprises: (a) from 60 to 98% by weight of an aqueous phase, and (b) from 2 to 40% by weight of an oily phase, said oily phase being dispersed in said aqueous phase and stabilized using cubic gel particles, said particles being essentially formed of: (i) 0.1 to 15% by weight, relative to the total weight of the composition, of at least one component selected from the group consisting of 3,7,11,15-tetramethyl-1,2,3-hexadecanetriol or phytanetriol, N-2-alkoxycarbonyl derivatives of N-methylglucamine and unsaturated fatty acid monoglycerides, and (ii) 0.05 to 3% by weight, relative to the total weight of the composition, of a dispersing and stabilizing agent, said agent being selected from the group consisting of surface-active agents which are water-soluble at room temperature, containing a linear or branched, saturated or unsaturated fatty chain having from 8 to 22 carbon atoms. Use in particular in the cosmetic, dermatological and pharmaceutical fields.

Oily phase in an aqueous phase dispersion stabilized by cubic gel

Active chemical sensor with optical fiber and its production process. The chemical sensor according to the invention makes it possible to measure a given quantity or magnitude of a fluid. It has a chemical reagent suitable for the measurement and for reacting with the fluid, a support means (20a, 28) for the reagent and a single optical fiber (20) for supplying light to the reagent and recovering the light reflected by the reagent, said sensor being characterized in that the support means incorporates a vinyl imidazole polymer or copolymer film (28) in which the reagent is immobilized, said polymer being in particular directly grafted on to one of the ends (20a) of the optical fiber (20).

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Vincennes, France

Bruno Biatry