1. Soak your nail in warm water for 5 minutes. 2. Use straight end to file the ingrown corner to reduce its thickness. 3. Use lifter to lift up the sharp ingrown part away from flesh. 4. Use cured end file slide into lifted area to file inner surface. 5. File the outer surface with straight end. 6. Repeat until file away ingrown part and you feel relief. 7. Use ingrown nail lifer to clean the debris. 8. Clean the tools with warm water after use