This is a serum with a W-care formula, containing 25% high-concentration Vitamin C and moisturizing the skin with 6 types of ceramides. I purchased this new, but it didn't suit my skin, so I'm selling it. I used about 3-4 drops. - Brand: KINUI - Ingredients: High-concentration Vitamin C (25% concentration) - Ceramides: Contains 6 types of ceramides - Features: W-care formula - Usage: Daily skincare KINUI skincare pore care Thank you for looking.