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.