The present invention relates to an aqueous hair cleansing agent, comprising: a sulfate type anionic surfactant having a specific structure, an ether carboxylate type anionic surfactant having a specific structure, and an organic carboxylic acid or a salt thereof, and having a pH of 1-5 at 25℃ when diluted with water to 20 times weight.本發明係一種水性毛髮洗淨劑，其含有：具有特定構造之硫酸鹽型陰離子界面活性劑、具有特定構造之醚羧酸鹽型陰離子界面活性劑及有機羧酸或其鹽；且用水稀釋為20重量倍時之25℃之pH為1～5。
