Acidic compositions or dermatological composition containing a crosslinked poly (2-acrylamido-2-methylpropanesulfonic acid) neutralized to at least 90%

摘要

The invention relates to a cosmetic or dermatological composition containing an acidic aqueous medium and at least one crosslinked poly(2-acrylamido-2-methylpropanesulfonic acid) polymer neutralized to at least 90%. The composition contains, distributed randomly:(a) from 90 to 99.9% by weight of units of formula (1); andin which X+ denotes a cation or a mixture of cations, it being possible for at most 10 mol % of the cations X+ to be protons H+;(b) from 0.01 to 10% by weight of crosslinking units originating from at least one monomer having at least two olefinic double bonds; the proportions by weight being defined with respect to the total weight of the polymer. The invention also relates to the use of this composition in the cosmetic treatment of keratinous substances, in particular of the skin, hair and mucous membranes, and in particular to a non-therapeutic process for depigmentation of the skin.