No purified water or retinol derivatives. Formulated using 0. 5% stabilized, pure retinol for powerful anti-aging care. Best for skin accustomed to retinol but still experiencing progressive signs of aging such as loss of elasticity and dryness. For intermediate-level retinol users looking for a highly concentrated, youth booster. Key Ingredients:Pure retinol (Vitamin A): Accelerates collagen production and skin turnover to improve fine linesPlant-derived squalane: Protects the skin from external irritationTocotrienol (Super Vitamin E): Reduces visible signs of aging and skin damage | COSRX The Retinol 0. 5 Oil, 20 ml | Dermstore