Almost everyone has calluses on their feet. Callus is one of the most common foot problems. It is an area of thickened skin caused by irritation or friction from the shoes, for example when wearing high heels or shoes that are too big or too small. Due to the Corns and Calluses ointments and the Foot Balm Soft, calluses is a thing of the past! It is a painless, fast and very effective way to remove calluses.