主权项 |
1. An agent for cosmetic treatment of keratin-containing fibers, in particular human hair, comprising:
(a) about 0.1 wt. % to about 5.0 wt. %, relative to the weight of the agent, of at least one copolymer (a) comprising at least one structural unit of formula (I) and at least one structural unit of formula (II), in whichR1 denotes a hydrogen atom or a methyl group,X1 denotes an oxygen atom or an NH group,A1 denotes an ethane-1,2-diyl, propane-1,3-diyl or butane-1,4-diyl group,R2 and R3 mutually independently denote a (C1 to C4) alkyl group, and (b) about 0.1 wt. % to about 5.0 wt. %, relative to the weight of the agent, of at least one copolymer (b) comprising at least one structural unit of formula (A1) and at least one structural unit of formula (A2) in whichR1 denotes a (C1 to C8) alkyl group,R2 denotes a (C1 to C6) alkyl group,M denotes a hydrogen atom or an equivalent of a mono- or polyvalent cation; and a cosmetically acceptable carrier wherein the ratio (W/W) of the at least one copolymer (a) to the at least one copolymer (b) is about 5:1 to 1:5. |