Be Natural Callus Eliminator The One, The Only, The Original. Be Natural Callus Eliminator saves you time and effort by doing the work for you. It breaks down calluses in 3-5 minutes, then, file or buff them away. Directions: After soaking, liberally spread Callus Eliminator over callus. Let it set for 3-5 minutes depending on callus buildup. Then wipe away excess and use a file or buffer to gently remove callus. Wash off with water. Wear gloves or rinse fingers after applying.