Kalliston - Pumice Stone : natural, white pumice, a gray volcanic rock that floats on water. It is formed from volcanic eruptions of silicate lavas, rich in volatiles. It is a natural accessory for care and beauty. It removes dead skin cells and reduces calluses on the feet. It rubs hard areas without causing injuries to the skin. It can be used on heels, elbows or anywhere else there are hard areas on the skin, providing smooth and soft skin. It has a cord for ease of use and storage. Use: Use Kalliston Pumice Stone on slightly damp skin. Gently rub your heels or elbows or any part of your body that has calluses. For softer skin, use 2-3 times a week.