PURPOSE: A foamable bathing agent obtained by blending a carbonate with an organic acid to give a foamable bathing composition and mixing the composition with polyethylene glycol and macrogol as a stabilizer.

CONSTITUTION: 5W80wt% carbonate (e.g. dried NaHCO3, Na2CO3, etc.) is blended with 10W200wt% organic acid (e.g. succinic acid, citric acid, etc.) to give a foamable bathing composition, which is mixed with 0.5W20wt% based on the whole composition of polyethylene glycol and 5W15wt% macrogol 6,000 especially preferably having fine molecules to give a foamable bathing agent. Further the agent is blended with one or more of perfume, dyestuff, vitamins, active ingredients of hot spring, protease, etc., selectively a binder, a disintegrator, lubricant, vehicle, etc., besides the above-mentioned essential components and formed into powder or solid state. The agent is packed with a waterproof packaging material (e.g. metallic laminate film, etc.) before use or stored in a closed container.