REDUCING COMPOSITION FOR PERMANENT HAIR DEFORMATION COMPRISING AS A REDUCING AGENT AN AMINO MERCAPTOALKYLAMIDE OR ONE OF ITS SALTS AND THEIR USEUSE IN PERMANENT HAIR DEFORMATION PROCESS

摘要

Cosmetic composition for the first step of a permanent hair shaping operation. This composition contains, in a suitable cosmetic vehicle, as reducing agent, at least one amino mercaptoalkylamide having the following general formula: (See formula I) wherein: A represents the divalent radical ~ CH2 ~, n being an integer between 2 and 5, or the divalent radical ~ CH2) 2-O- (CH2 ~ m is 0 or an integer between 1 and 4, (i) when m is 0, R1 represents a hydrogen atom, a methyl radical, an ethyl radical, an isopropyl radical, an isobutyl radical, a methyl-2 -butyl, benzyl, amino-4-butyl group, a guanidino-3-propyl, 2-methylthio ethyl, carboxymethyl radical or a 2-carboxy-ethyl, ii) when m is an integer from 1 to 4, R1 represents a hydrogen atom or a lower alkyl radical having 1 to 5 carbon atoms, and salts of said compounds of formula (I).