Two different emery surfaces ? one fine and one coarse ? gently smooth rough, dry or hardened skin. Works great on corns and calluses. Ergonomically-designed, non-slip handle provides precise control. DIRECTIONS Before use, we recommend soaking your feet in warm, soapy water to cleanse and soften skin. Dry thoroughly. With repeated strokes in the same direction, move the file across affected area to take off unwanted skin. Stop use if area becomes painful or irritated. For best results, apply moisturizer to feet after use. Regular use of this file helps keep feet soft and well groomed day after day. CARE Hand wash in warm soapy water. rinse thoroughly. Air dry before reuse.