An object of the present invention is to establish means for reliably incorporating a poorly soluble UV-absorbing agent into a hair cosmetic composition, to thereby provide a hair cosmetic composition which has excellent effect of preventing UV-hair damage and which exhibits favorable sensation in use thereof. Specifically, the object can be attained through provision of a hair cosmetic composition including the following ingredients (1) and (2): (1) a polyoxy(lower alkylene) addition compound represented by formula (I): wherein R represents a phytosterol residue or a phytostanol residue; m is a number from 0 to 100; and n is a number from 5 to 100, and (2) a UV-absorbing agent having a triazine group.