Retinol Cream, with .50% retinol, applied externally, penetrates deep into the skin, where it becomes fully operative. Retinol is Vitamin A in its purest and most active form. Retinol not only improves the appearance of existing wrinkles, but also helps to prevent wrinkles. Studies have shown that retinoids counteract the physiological processes that actually lead to wrinkled, photoaged (sundamaged) skin. This product can also be used to treat acne and helps prevent new breakouts. This product contains retinol that has been stabilized with antioxidants and will provide a consistent activity level with each application. This gentle formula contains an anti-irritant agent to minimize potential irritation typically associated with the use of products containing retinoic acid. Rose Hip Oil, a source of trans-retinoic acid in a natural bio-available form, has been added to the formula as a tissue hydrator with a high level of absorption, penetrating dry skin almost instantly to restore the balance of moisture in the skin.