This is Kiehl's DS Line Concentrate Serum, 15ml. This serum contains 12.5% Vitamin C and Hyaluronic Acid, which reduces fine lines and wrinkles and improves skin radiance. - Brand: Kiehl's - Product Name: Powerful-Strength Line-Reducing Concentrate - Contents: 15 ml - Main Ingredients: 12.5% Vitamin C + Hyaluronic Acid - How to Use: Apply to clean skin, avoiding the eye area. - Suitable for: All skin types Unused item for sale. Purchased last week and just arrived.