Hairspray with especially high longevity

摘要

Hair treatment agent comprises a cationic amphoteric film-forming polymer containing the monomer such as vinylpyrrolidone, tert-butyl acrylate, methacrylic acid, dimethylaminopropyl methacrylamide and methacryloyloxyethyldimethylethyl ammonium ethyl sulfate, with the requirements that the amount of methacrylic acid is lower than the amount of dimethylaminopropylmethacrylamide and the polymer is neutralized with a suitable acid, and at least an additive to improve the drying behavior of the polymer film.