Active ingredients: Urea Effect: The Callus remover is an alkalescent product which accelerates the process of softening calloused skin due to the added Sodium carbonate and Urea. It is designed to clean the nail fold and cuticle and to remove hardened areas on the feet. For professional use only. Application: For cleaning the nail fold: Apply the Callus Remover in the area of the nail fold and leave to work for about 5-10 min. Clean the area with a suitable tool. For cleaning calloused areas on the feet: Apply a decent amount of Callus remover on the hardened areas. Wrap the foot in a polyethylene bag or foil for 10-15 min. Remove the softened tissue with a pedicure file.