An aqueous hair cleansing agent containing the following components (A),(B) and (C): (A): an anionic surfactant (B): a cationized tara gum and (C): a dimethylpolysiloxane present as dispersed particles having an average particle size of from 2 to 100 μm.本發明為一種水性毛髮洗淨劑,係含有下述成分(A)、(B)及(C):(A)陰離子界面活性劑;(B)陽離子化塔拉膠(tara gum);(C)以平均粒徑2~100 μm之分散粒子存在的二甲基聚矽氧烷。