Cosmetic agents and methods for the temporary deformation of keratin-containing fibers using the cosmetic agents are provided herein. In one embodiment, the cosmetic agent for the temporary shaping of keratinic fibers includes a cosmetic preparation. The cosmetic preparation includes at least one copolymer a1), made up of at least the following monomer units: N-tert-octylacrylamide, acrylic acid, and tert-butylaminoethyl methacrylate. The cosmetic preparation further includes at least one copolymer a2), made up of at least the following monomer units: (meth)acrylic acid, (meth)acrylic acid alkyl ester, and (meth)acrylic acid hydroxyalkyl ester. The weight proportion of copolymers a1) and a2) in terms of the total weight of the cosmetic preparation is about 10 to about 30% by weight.
