Provided is an aqueous hair cleansing composition, including the following components (A) to (D) and water, in which the aqueous hair cleansing composition has a pH of from 2 to 5 when diluted 20-fold: (A) an anionic surfactant； (B) a cationized hydroxypropyl cellulose having a main chain derived from an anhydroglucose, and having a degree of substitution with cationized ethyleneoxy groups of from 0.01 to 2.9 and a degree of substitution with propyleneoxy groups of from 0.1 to 4.0； (C) an organic solvent selected from (C1) and (C2): (C1) an aromatic alcohol； and (C2) a polypropylene glycol having a molecular weight of from 200 to 1,000； and (D) a hydroxy monocarboxylic acid or a dicarboxylic acid.本發明係關於一種水性毛髮清潔劑，其含有成分(A)~(D)及水，稀釋20倍時之pH值為2~5。(A)陰離子界面活性劑(B)陽離子化羥丙基纖維素，其具有源自脫水葡萄糖之主鏈，且陽離子化伸乙基氧基之取代度為0.01~2.9，伸丙基氧基之取代度為0.1~4.0(C)選自(C1)及(C2)中之有機溶劑(C1)芳香族醇(C2)分子量200~1000之聚丙二醇(D)羥基單羧酸或二羧酸
