Directions Directions for Use: Briefly soak skin in warm, sudsy water. Gently scrape dry, callused skin with the metal surface being careful not to rub too hard on the skin. Next, gently smooth rough edges with the black surface. Repeat as needed to maintain soft, smooth skin. Directions for Cleaning: Remove metal residue receptacle by pressing thumb into depression and pushing away. Empty shavings, rinse and allow to air dry. Replace receptacle for next use.