PROBLEM TO BE SOLVED: To provide a cosmetic composition which has an excellent antiseptic effect and suppresses irritation.SOLUTION: There is provided a cosmetic composition which comprises the following components (A), (B) a preservative component containing at least one selected from a paraoxybenzoic acid ester and phenoxy ethanol and (C) water. (A) is a copolymer containing constitutional units (a) to (c) represented by the general formulas (1) to (3), respectively, and 1 to 30 mass% of (a) and 5 to 47.5 mass% of (c) in which the mass ratio of (c) to (b) is 0.06 to 1.2 (R1 to R9 represent a hydrogen atom or the like, R10 represents an alkylene group having 2 to 4 carbon atoms, R11 represents an alkyl group having 8 to 30 carbon atoms or the like, X1 represents OM or 2CH2SO2M (M is a hydrogen atom or a cation group), X2 represents NR12R13(R12 and R13 are a hydrogen atom or the like) or OR14 (R14 is an alkyl group having 2 or 3 carbon atoms having a hydroxy group), X3 represents an oxygen atom or the like, and n is an integer of 0 to 3.)COPYRIGHT: (C)2015,JPO&INPIT【課題】防腐効果に優れ、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)パラオキシ安息香酸エステル及びフェノキシエタノールから選ばれる少なくとも1種を含む防腐剤成分、(C)水、を含有する化粧料組成物。(A)一般式(1)~(3)でそれぞれ表される構成単位(a)~(c)を含み、共重合体中(a)を1~30質量%、(c)を5~47.5質量%含み、(b)に対する(c)の質量比が0.06~1.2である共重合体;(R1~R9は、水素原子等、R10はC2~4のアルキレン基、R11はC8~30のアルキル基等、X1はOM等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は酸素原子等、nは0~3の整数)【選択図】なし
