Agent for keratinous fibres, containing at least one specific amphiphilic cationic polymer and at least one specific copolymer

A cosmetic agent for cosmetic treatment of keratin-containing fibers comprising a cosmetically acceptable carrier;

• and
• (a) about 0.05 wt % to about 8.0 wt %, based on the total weight of the agent, of at least one amphiphilic cationic polymer comprising at least one structural unit of formula (I), at least one structural unit of formula (II), at least one structural unit of formula (III), and at least one structural unit of formula (IV),
• in which
• R1 and R4 mutually independently denote a hydrogen atom or a methyl group,
• X1 and X2 mutually independently denote an oxygen atom or an NH group,
• A1 and A2 mutually independently denote an ethane-1,2-diyl group, propane-1,3-diyl group, or butane-1,4-diyl group,
• R2, R3, R5, and R6 mutually independently denote a (C1 to C4) alkyl group,
• R7 denotes a (C8 to C30) alkyl group,
• and
• (b) about 0.05 wt % to about 8.0 wt %, based on the total weight of the agent, of at least one copolymer comprising at least one structural unit of formula (A1), at least one structural unit of formula (A2), and at least one structural unit of formula (A3),
• in which
• R1, R3, and R7 mutually independently denote a hydrogen atom or a methyl group,
• R2 denotes a (C1 to C4) alkyl group,
• R4 denotes a hydroxy-(C2 to C6) alkyl group
• wherein the ration (W/W) of the amphiphilic cationic polymers of component (a) and the copolymers of component (b) is about 5:1 to 1:5.