PROBLEM TO BE SOLVED: To provide a bathing agent composition which is excellent in a sufficient warming effect and in a carbon dioxide bubbling property, has a granule strength capable of resisting to handling, and is excellent in storage stability.SOLUTION: A method for producing the bubbling powder bathing agent composition comprises a process 1: for mixing an oily ingredient, a nonion surfactant, a water-soluble binder, and an organic acid to obtain an intermediate composition, a process 2: for granulating the intermediate composition obtained in the process 1 to obtain granules of a component (A), and a process 3: for mixing the component (A) with the carbonate of a component (B). The composition produced by the method has good storage stability, forms fine bubbles to enhance the concentration of carbon dioxide in a bath, and therefore gives an excellent blood circulation-promoting effect.COPYRIGHT: (C)2011,JPO&INPIT【課題】十分な温まり効果と炭酸ガスの発泡性に優れ、更にハンドリングに耐えうる顆粒の粒子強度を有し、保存安定性にも優れる入浴剤組成物の提供。【解決手段】工程1:油性成分、非イオン界面活性剤、水溶性バインダー、及び有機酸を混合し、中間組成物を得る工程、工程2:工程1で得られた中間組成物を造粒し、(A)成分の造粒物を得る工程、工程3:(A)成分と(B)成分の炭酸塩を混合する工程、を含む発泡性粉末入浴剤組成物の製造方法。前記方法により製造された組成物は、保存安定性が良く、微細な泡が発生されることにより、浴中の炭酸ガス濃度が高められるため、優れた血行促進効果が得られる。【選択図】なし