Hair treatment agents having substituted silicone(s)

A hair treatment agent, including—in each case with respect to the weight of the hair treatment agent—

• a) 0.1 to 20 wt % of at least one silicone, which has groups of formula (I)
• wherein
• n stands for values from 1 to 1000, and
• A stands for a group
• in which R1 stands for —H or —CH3 and R stands for a straight-chained or branched alkyl group having 8 to 24 C atoms and a stands for an integer from 1 to 20;
• b) 0.1 to 20 wt % of at least one copolymer, which has monomer units of formulas (V) and (VI)
• wherein R2 stands for —H or —CH3 and X stands for —H, an alkali metal cation, or a straight-chained or branched alkyl group having 1 to 24 C atoms;
• and
• c) 0.1 to 10 wt % of (RS)-2-cyano-3,3-diphenylacrylic acid-2-ethylhexylester.