A hair shampoo composition characterized by comprising components (A) and (B) mentioned below, wherein the ratio of the mass of the component (A) to the mass of the component (B), i.e., (A)/(B), is 0.5 to 8: (A) 0.5 to 15% by mass of a taurine salt of an N-acylmethyl taurine which is represented by general formula (1) R1CON(CH3)CH2CH2SO3 -X+ (wherein R1CO represents an acyl group having 8 to 24 carbon atoms； X represents H3N+CH2CH2SO3 -M+； and M represents an alkali metal or an organic ammonium)； and (B) 0.3 to 10% by mass of an alkylene oxide derivative represented by general formula (2) R2COO(BO)mH (wherein R2CO represents an acyl group having 8 to 14 carbon atoms； BO represents an oxybutylene group； and m represents an average number of moles added, wherein 1 ≤ m ≤ 2).本發明提供一種洗髮劑組合物，含有下述（A）成分以及（B）成分： （A）成分為以下通式（1）所表示的N-醯基甲基牛磺酸的牛磺酸鹽，0.5~15品質%， R1CON(CH3)CH2CH2SO3-X+･･･（1） 式中，R1CO為碳原子數8~24的醯基，X為H3N+CH2CH2SO3-M+、M為鹼金屬或有機胺； （B）成分為以下通式（2）所表示的烯化氧衍生物，0.3~10質量%， R2COO(BO)mH ･･･（2） 式中，R2CO表示碳原子數8~14的醯基，BO表示氧化丁烯基，m表示平均加成莫耳數，1≤m≤2。其中，（A）成分與（B）成分的質量比（A）/（B）＝0.5~8。
