This skin cleansing agent composition contains 15 to 30 mass % of a non-ionic surfactant having a HLB value of higher than 9 but not higher than 20, 1 to 15 mass % of a non-ionic surfactant having a HLB value of not lower than 5 but not higher than 9, 10 to 40 mass % of an oil agent having a viscosity of 30 mPas or lower at 30 DEG C, 10 to 40 mass % of a water-soluble solvent having 3 or more hydroxyl groups in the molecule, 10 to 30 mass % of a water-soluble solvent having 1 or 2 hydroxyl groups in the molecule, 0.05 to 1.0 mass % of a water-soluble polymer having (meth)acrylic acid as a constituent unit and/or an acryloyl methyl taurate-vinyl pyrrolidone copolymer, 0.001 to 2.0 mass % of a water-soluble inorganic salt and/or an organic salt having 1 to 8 carbon atoms, and water； the skin cleansing agent composition has an isotropic single liquid phase having a bi-continuous structure.本發明之皮膚清潔劑組合物含有：HLB大於9且為20以下之非離子界面活性劑15~30質量%；HLB為5以上且9以下之非離子界面活性劑1~15質量%；於30℃下之黏度為30 mPa‧s以下之油劑10~40質量%；於分子內具有三個以上之羥基之水溶性溶劑10~40質量%；於分子內具有一個或兩個羥基之水溶性溶劑10~30質量%；包含(甲基)丙烯酸作為結構單元之水溶性聚合物、及/或丙烯醯基甲基牛磺酸鹽-乙烯基吡咯啶酮共聚物0.05~1.0質量%；水溶性之無機鹽及/或碳數1~8之有機鹽0.001~2.0質量%；及水；且具有雙連續結構之各向同性單液相。
