PROBLEM TO BE SOLVED: To provide a foamable bath agent exhibiting excellent stability with time lapse in storage, sound-generating properties when dissolved in bath water and excellent foaming properties.SOLUTION: The powdery bath agent is obtained by physically mixing a base agent for the bath agent, containing a silica powder and an oily component as assistant components, and a gas-including solid material obtained by sealing a high-pressure gas in the inside of a saccharide-containing solid material. The oil absorption of the silica powder is 180-390 mL/100 g, and the ratio (by weight) of the oily component to the silica powder is 0.8-10. The bath agent has the sufficient sound-generating properties and the foaming properties even after a long-term storage because the stability with the time lapse of the gas-including solid material is heightened by the silica powder contained in the bath agent, and the deterioration with time of the gas-including solid material is suppressed.COPYRIGHT: (C)2012,JPO&INPIT【課題】保存時の経時的安定性に優れ、浴湯への溶解時の発音性、発泡性に優れた発泡性入浴剤を提供する。【解決手段】補助成分としてシリカ粉末及び油性成分を含む入浴剤基剤と、糖類含有固形物の内部に高圧ガスを封入してなるガス含有固形物とを物理的に混合してなる粉末状入浴剤であって、シリカ粉末の吸油量が、180~390mL/100gであり、かつ、シリカ粉末に対する油性成分の比率(重量比)が、0.8~10である粉末状入浴剤。入浴剤基剤が含有するシリカ粉末がガス含有固形物の経時安定性を高めるため、ガス含有固形物が経時劣化を抑制して、長期保存後にも十分な発音性、発泡性を有する。【選択図】なし
