Abstract: A bath medicine is provided which comprises a water swelling gel of a natural or synthetic sodium montmorillonite or a composite of the water swelling gel and urea as the main component, and one or more components selected from among humectants, oils, fats, crude drugs, extracts, enzymes and other medicines, and which always maintains the wet state; preferably, the humectants being 1,3-butylene glycol, sodium lactate, etc., the oils and fats being jojoba oil, squalane oil, rice germ oil, etc., the crude drugs being Rehmannia root extract, peach leaf extract, loquat leaf extract, etc., the extracts being fermented rice extract, orris extract, etc., the enzymes being trypsin, papain, etc., and the other medicinal ingredients being nucleic acid, deoxyribonucleic acid, peptides obtained by the hydrolysis or enzymolysis of silkworm yarns or silk proteins, and which exhibits a remarkable effect on atopic dermatitis, pruritus cutaneus senilis, etc.