To provide shampoo compositions that have an excellent foaming speed and the elasticity (stiffness) of bubbles when washing the hair, have excellent finger combing properties when rinsing, imparting suppleness and elasticity feel to the hair after drying, and further hardly drip bubbles when washing the hair.SOLUTION: Provided is a shampoo composition containing component (a): 3 to 30% by mass of an acylhydroxyalkylalanine salt represented by the formula (1) of claim 1, component (b): 2 to 20% by mass of an alkylhydroxysulfobetaine represented by the formula (2) of claim 1, and component (c): 50 to 95% by mass of water.SELECTED DRAWING: None【課題】洗髪時の泡立ちの速さや泡の弾力（コシ）に優れ、すすぎ時の指通りが良く、乾燥後の毛髪にハリコシ感を与え、さらに洗髪時に泡が垂れ落ちにくい毛髪洗浄剤組成物の提供。【解決手段】（ａ）成分：請求項１の式（１）で表されるアシルヒドロキシアルキルアラニン塩を３～３０質量％、（ｂ）成分：請求項１の式（２）で表されるアルキルヒドロキシスルホベタインを２～２０質量％、（ｃ）成分：水を５０～９５質量％含有する毛髪洗浄剤組成物。【選択図】なし
