PROBLEM TO BE SOLVED: To provide a cosmetic composition which has an excellent ultraviolet ray protection effect and suppresses stimulation.SOLUTION: There is provided a cosmetic composition which comprises the following components (A), (B) an ultraviolet-absorbing component and (C) water. (A) is a copolymer containing constitutional units (a), (b) and (c) represented by the general formulas (1), (2) and (3), respectively, and 1 to 30 mass% of (a) and 5 to 55 mass% of (c) in which the mass ratio of (c) to (b) ((c)/(b)) is 0.06 to 1.43 (R1 to R9 represent a hydrogen atom or an alkyl group having 1 to 2 carbon atoms, R10 represents an alkylene group having 2 to 4 carbon atoms, R11 represents an alkyl group having 8 to 30 carbon atoms or an alkenyl group, X1 represents OM or NHC(CH3)2CH2SO2M (M is a hydrogen atom or a cation group), X2 represents NR12R13 (R12 or R13 is a hydrogen atom or the like) or OR14 (R14 is an alkyl group having 2 to 3 carbon atoms having a hydroxy group), X3 represents an oxygen atom or NH, and n is an integer of 0 to 3.)COPYRIGHT: (C)2015,JPO&INPIT【課題】紫外線防御効果に優れ、刺激が抑制された化粧料組成物を提供する。【解決手段】次の成分(A)、(B)紫外線吸収成分、及び(C)水を含有する化粧料組成物。(A)一般式(1)、(2)、(3)で表される、それぞれ構成単位(a)、(b)(c)を含み、共重合体中、(a)を1~30質量%、(c)を5~55質量%含み、(b)に対する(c)の質量比((c)/(b))が0.06~1.43である共重合体;(R1~R9は水素原子又はC1~2のアルキル基、R10はC2~4のアルキレン基、R11はC8~30のアルキル基又はアルケニル基、X1はOM又はNHC(CH3)2CH2SO2M(Mは水素原子又は陽イオン基)、X2はNR12R13(R12及びR13は水素原子等)又はOR14(R14はヒドロキシ基を有するC2又はC3のアルキル基)、X3は酸素原子又はNH、nは0~3の整数)【選択図】なし
