Composition for dyeing keratin fibers, especially human hair, includes a polymer substituted by amino or ammonium groups, to improve color intensity

摘要

Composition for dyeing keratin fibers, especially human hair, comprises, in a carrier, at least one color-providing composition (C) and at least one polymer (P) that contains amino groups, or its salt. Composition for dyeing keratin fibers, especially human hair, comprises, in a carrier, at least one color-providing composition (C) and at least one polymer (P) that contains amino groups and has formula (I), or its salts. -[CH2-CH(NHR)-]n (I) n : integer; R : hydrogen, 1-8C alkyl, formyl, 2-10C acyl, omega -hydroxy(2-10C)acyl, 2-10C hydroxyalkyl or R'NHCO-, or R together with the rest of the polymer molecule forms a 6-membered ring; R' : hydrogen, 1-8C alkyl or 2-10C hydroxyalkyl . An independent claim is also included for a method for treating keratin fibers by application of the new composition, then rinsing.