Urea in high concentration strengthened with glycerin and Allantoin loosens the cell bond of the hard callus layers. The cream removes annoying calluses within 28 days, it immediately softens and noticeably reduces callus within a few days. Lipids strengthen and protect; silk extract provides moisture and smoothes the skin. Do not use the cream on cracked or inflamed skin - in this case GEHWOL med Salve for Cracked Skin is recommended.