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
AssigneeL'oreal
InventorBruno Biatry
Life of this patent
Estimating the term…
Abstract
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.
Claims19
A method for lightening and/or depigmenting the skin and/or hair comprising applying thereto a composition comprising at least one oxidation-sensitive hydrophilic active principle selected from the group consisting of ascorbic acid, 5,6-di-O-dimethylsilylascorbate, the dl-α-tocopheryl dl-ascorbyl phosphate potassium salt, magnesium ascorbyl phosphate, sodium ascorbyl phosphate, ascorbyl glucoside, and mixtures thereof, and at least one water-soluble maleic anhydride copolymer comprising one or more hydrolyzed maleic anhydride comonomer units and one or more comonomer units selected from the group consisting of vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins comprising from 2 to 20 carbon atoms, and styrene, said composition further comprising a physiologically acceptable medium comprising an aqueous phase, wherein the oxidation-sensitive active principle and the copolymer are in the same aqueous phase.
A composition comprising at least one oxidation-sensitive hydrophilic active principle selected from the group consisting of ascorbic acid, 5,6-di-O-dimethylsilylascorbate, the dl-α-tocopheryl dl-ascorbyl phosphate potassium salt, magnesium ascorbyl phosphate, sodium ascorbyl phosphate, ascorbyl glucoside, and mixtures thereof and at least one hydrolyzed maleic anhydride copolymer comprising one or more maleic anhydride comonomer units and one or more comonomer units selected from the group consisting of vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins comprising from 2 to 20 carbon atoms, and styrene, wherein the oxidation-sensitive active principle and the copolymer are both in the aqueous phase.
Dependencies are inferred from the claim text.