PROBLEM TO BE SOLVED: To provide a cleaning agent composition which can remarkably improve, in the hair cleaning field, all of foaming in hair cleaning, rinse aid in rinsing and no hair spreading after drying, and which can remarkably improve, in the skin cleaning field, foaming in cleaning, rise aid in rising and no skin dryness after drying.SOLUTION: The cleaning agent composition contains: at least (A) an anionic surfactant in an amount of 5-30 mass% (B) a cationic surfactant in an amount of 0.1-10 mass% (C) a dimethylpolysiloxane having a kinematic viscosity of &ge4 million mm2/s at 25°C in an amount of 0.01-2 mass% and (D) a maltooligosaccharide.COPYRIGHT: (C)2012,JPO&INPIT【課題】毛髪洗浄分野では、洗髪時の泡立ち、すすぎ時の泡切れ、及び乾燥後の髪の広がりのなさのすべてを顕著に向上させることができ、皮膚洗浄分野では、洗浄時の泡立ち、すすぎ時の泡切れ、及び乾燥後の皮膚のかさつきのなさのすべてを顕著に向上させることができる洗浄剤組成物の提供。【解決手段】(A)アニオン性界面活性剤5質量%~30質量%、(B)カチオン性界面活性剤0.1質量%~10質量%、(C)25℃での動粘度が400万mm2/s以上のジメチルポリシロキサン0.01質量%~2質量%、及び(D)マルトオリゴ糖を少なくとも含有する洗浄剤組成物である。【選択図】なし