All the power of Retinol – no irritation. Yes, you read that correctly. Powered by a 2.5% blend of Retinol and Granactive Retinoid suspended in eight soothing natural oils, the Black Diamond Retinol Oil delivers all the age-defying benefits of Vitamin A – clinically proven to reduce visibility of fine lines and wrinkles in just four weeks**. And it does so without aggravating your skin. The precision blend of actives helps encourage cell turnover which in turn reduces the appearance of wrinkles and leaves your skin looking younger and smoother.