This foot mask is suitable for all skin types, including rough and dry skin, cracked heels, and calluses. It contains lactic acid and a gentle formula to moisturize and soften the skin. Package includes 3 pairs (6 pieces) of foot masks. For best results, follow the instructions carefully, which include soaking your feet in hot water before application and wearing socks afterwards. Do not use if you have open cuts or wounds. Peeling of dead skin may take 3-5 days and varies for each individual. Patch test before use and discontinue if irritation occurs.