Calluses usually grow on the fingers, palms, heels, toes and other parts of the body. The cause is mainly due to contact with the outside world, long-term pressure and friction, resulting in skin growth and thickening caused by. Treatment of calluses can be applied locally with the Chinese herbal medicine crow’s nest or freshly pounded heliotrope, or with 30 grams of bone marrow mixed with beeswax, applied to the affected area. If the callus appears painful, surgical removal or the use of keratin exfoliators, such as 25% salicylic acid fire cotton gel, 0.3% vitamin A acid ointment, etc.. You can also soak your feet in hot water to soften the calluses and then carefully remove them with a razor blade, taking care not to injure the skin to avoid inflammatory infections. To completely eradicate, the first step is to reduce friction with the outside world, wear loose and comfortable shoes, and avoid physical labor of excessive intensity.