How to Use Korean Derma Roller at Home Safely
Quick Answer: Sterilize your 0.25mm Korean derma roller in 70% isopropyl alcohol for 5–10 minutes before every use — skipping this is the #1 cause of breakouts. Roll in a cross-hatch pattern: 5–10 vertical passes per section, then 5–10 horizontal passes. Keep the pressure light (no pain, no bleeding). Apply a hyaluronic acid or niacinamide … Read more