Cosmetic composition containing a reducing agent for hair perming, based on cysteamine and/or its N-acetyl derivatives and cationic polymer, and its use in a process for hair perming alterations

摘要

Reducing cosmetic composition, containing a combination of a reducing agent and a cationic polymer. The reducing agent is cysteamine or one of its salts and/or N-acetylcysteamine, and the cationic polymer is a copolymer of 45 to 99.5 mol% of N-vinylpyrrolidone and of 55 to 0.5 mol% of unquaternised di(C1-C4 alkyl)amino(C1-C18 alkyl) acrylate or methacrylate. …??Use of the composition in a cold permanent hair-setting process.