PROBLEM TO BE SOLVED: To provide a hair-dressing cosmetic with which it is easy to arrange the hair to favorite hair style by shaping hair bundles firmly and then loosening the hair bundles, and the hair style can be sustained for a long period of time.SOLUTION: The hair-dressing cosmetic contains organopolysiloxane graft polymer represented by the following formula. [Rand Rare a methyl group or the like Ris an alkylene group which may include a hetero atom Ris H or a methyl group and Ris a hydrocarbon group.