The invention relates to cosmetic agents for temporarily shaping keratin fibers, a method for temporarily shaping keratin fibers using said agents, and the use of said agents for temporarily shaping keratin fibers. The polymer combination of at least one specific anionic polyurethane polymer and a specific silicone-containing cationic copolymer used according to the invention results in excellent straightening properties and excellent protection of hair from damage during straightening.
