A natural pumice stone will not wear out and can be soaked in hot, soapy water overnight for cleaning. It works far better than synthetic.
Wash skin with soap and water. Gently rub the skin with the pumice stone to remove calluses.
Cooled volcanic lava infused with magnesium, iron and oxygen make this a natural for exfoliating calluses, rough spots and build-up of dead skin. Use on damp daily to reveal the soft and smooth skin beneath.