PROBLEM TO BE SOLVED: To provide a hair-treating agent composition which can ensure a merit due to oil-compounding inhibition and dissolve a demerit accompanied by the compounding inhibition.SOLUTION: This hair-treating agent composition comprises the following components (A) to (E). The component (A): 0.1 to 3.0 mass% of a cationized oligosaccharide. The component (B): 0.1 to 10.0 mass% of an oil which is liquid at 25°C. The component (C): 80.0 to 98.0 mass% of water. The component (D): 0.1 to 5.0 mass% of a water-soluble polymer. The component (E): 1.0 to 5.0 mass% of a cationic surfactant.COPYRIGHT: (C)2008,JPO&INPIT【課題】油分の配合抑制によるメリットの確保と、その配合抑制に付随して生じるデメリットの解消とを両立させた毛髪処理剤組成物を提供する。【解決手段】下記の(A)成分~(E)成分を含有する毛髪処理剤組成物。(A)成分:カチオン化オリゴ糖 0.1質量%~3.0質量%(B)成分:25°Cにおいて液状の油分 0.1質量%~10.0質量%(C)成分:水 80.0質量%~98.0質量%(D)成分:水溶性高分子 0.1質量%~5.0質量%(E)成分:カチオン性界面活性剤 1.0質量%~5.0質量%【選択図】なし