Problem: To provide a skin washing agent which is excellent in the foaming speed and the foam creaminess in washing therewith, and which, after washing therewith, is excellent in the moist feeling and the absence of pulling feeling of the skin and does not change the moisture content of skin. Means for Resolution: A foamable skin washing agent comprising (a) a fatty acid salt, (b) one or more selected from a homopolymer, a dipolymer and a terpolymer derived from a specific cationated monomer (e.g., dimethyldiallylammonium chloride), (c) a polyglyceryl monoalkyl ether, and (d) one or more selected from an acylmethyltaurine salt and a hydroxy ether carboxylate salt.本發明係揭示含有(a)脂肪酸鹽、及(b)自特定之陽離子化單體(例如二甲基二烯丙基氯化銨等)所衍生之均聚物、二聚物、及三元共聚物中所選擇之1種或2種以上、及(c)聚甘油基單烷基醚、及(d)自醯基甲基牛磺酸鹽、羥基醚羧酸鹽中所選擇之1種或2種以上之起泡性皮膚洗淨料。依據本發明，提供洗淨時起泡速度、泡沫綿密度優異，且洗淨後之滋潤感及無緊繃感優異，肌膚水分量無變化之皮膚洗淨料。
