PROBLEM TO BE SOLVED: To provide a composition that contains ethanol and water, and has a colorless, clear appearance and does not cause the deterioration of foaming even in an acidic state.SOLUTION: The present invention provides a composition that is foamable in an acidic state, the composition containing a) PEG/PPG-20-35/5-30 dimethicone, b) ethanol of 40 w/v% or more relative to the whole composition, and c) water.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】本発明はエタノールと水を含み酸性下でも、外観が無色澄明で、泡立ちが低下しない組成物を提供すること。【解決手段】a)PEG/PPG-20~35/5~30ジメチコン、 b)組成物全体に対して40w/v%以上のエタノール、及び c)水を含む酸性で起泡性の組成物。【選択図】なし