Cleans, softens and protects the leather PREVENT Glycerin Soap - reconditions, protects and softens leather. Cuts through dirt, grease and sweat residue. The glycerin fill and seal the pores in the leather and protects against salt, dirt, grease and water. Tips for leather care: Keep the leather clean to prevent mechanical damage from dirt and gravel. Always rinse away loose dirt with water. Never dry leather over heat!