GOOD SKIN NIACINAMIDE MASK SHEET [1+1] Sale! from ₱115.00 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Niacinamide helps skin look clear and luminous. How to Use: 1. After washing the face, apply toner to prepare the skin for the next step of skin care. 2. Open the pouch, pull out the sheet, apply on the face using the eye area to aligh correctly. 3. Remove after 10-20 minutes and gently pat for better absorption.