Cosrx The Retinol 0.5 Oil is a anti aging face oil for all skin types. An intensive treatment to give your skin youthfulness and radiance. The Retinol 0.5 Oil is a powerful formula that contains no purified water or retinol derivatives. With 0.5 percent pure stabilized retinol, this anti-aging treatment is ideal for skin accustomed to retinol but still showing signs of aging such as loss of elasticity and dryness. Perfect for those seeking a highly concentrated product to maintain a radiant, rejuvenated complexion.