Rotten feet are related to what Chinese medicine calls tinea pedis, and Podophyllotoxin can relieve keratosis pilaris caused by dampness and heat. It is composed of salicylic acid, bitter ginseng, boric acid and benzoic acid, which can dry dampness and clear heat, astringent sweating and killing insect efficacy. Podophyllotoxin can be used clinically to treat keratosis pilaris and tinea pedis caused by dampness-heat underflow (dampness and heat invading the intestines, bladder, pubic area, lower limbs, etc.), as well as smelly sweating. It should not be used for vesicular and blistering tinea pedis, and should not be used by pregnant women or children. This product may cause contact dermatitis and occasionally severe dermatitis. The drug is a topical medication and should not be taken internally. Do not contact the eyes, mouth and other mucous membrane places, skin ulcers should not be taken. Use of the drug requires medical supervision to avoid adverse effects.