PROBLEM TO BE SOLVED: To provide a hair cleansing composition having creamy foam, light and fluffy feeling, and excellent cohesiveness and fluffy feeling even under high humidity conditions of dried hair. A hair cleansing composition containing the following components (a) to (d). (A) Anionic surfactant: 1 to 20% by mass (b) (b1) contains alkyl betaine and / or alkylamide betaine and (b2) alkylaminodicarboxylate, and has a mass ratio of (b1) / ( b2) = 1/2 to 3/1 Amphoteric surfactant: 1 to 15% by mass (c) Nonionic surfactant represented by the formula (1): 0.01 to 3% by mass R10-O- (CH2-CH2-O) n-O-R11 ... In formula (1) (in formula (1), R10 and R11 represent acyl groups having 10 to 18 carbon atoms. N is the average addition of ethylene oxide. It is the number of moles and indicates an integer of 50 to 200.) (D) Methacrylic copolymer having a phosphorylcholine group: 0.005 to 0.5% by mass [Selection diagram] None【課題】泡がクリーミーで、軽く且つふわふわ感に優れ、乾燥後の毛髪が高湿度条件下においてもまとまり感、ふんわり感に優れる毛髪洗浄剤組成物の提供。【解決手段】下記の(a)成分~(d)成分を含有する毛髪洗浄剤組成物。 (a)アニオン性界面活性剤:1~20質量% (b)(b1)アルキルベタインおよび/またはアルキルアミドベタインと、(b2)アルキルアミノジカルボン酸塩とを含有し、質量比(b1)/(b2)=1/2~3/1である両性界面活性剤:1~15質量%(c)式(1)で表されるノニオン性界面活性剤:0.01~3質量% R10-O-(CH2-CH2-O)n-O-R11 ・・・・式(1)(式(1)中、R10およびR11は、炭素数10~18のアシル基を示す。nはエチレンオキサイドの平均付加モル数であり、50~200の整数を示す。) (d)ホスホリルコリン基を有するメタクリル共重合体:0.005~0.5質量%【選択図】なし