What it is: An intensive anti-aging treatment oil formulated with a retinol blend to boost skin regeneration. What it does: The oil utilizes a 2.5% retinol blend to boost skin regeneration that improves skin texture, brightens skin and reduces the appearance of wrinkles and age spots. The Black Diamond Retinol Oil is proven to visibly smooth, brighten and even tone for younger looking skin without the irritation. Dr. Yannis applied his surgical expertise to deliver results precisely and effectively whilst also respecting skin sensitivity. The powerful formula is suitable for sensitive skin via the luxuriously soothing blend of eight oils that suspend the actives, resulting in no redness or flaking. The 2.5% retinol blend is clinically proven to reduce the appearance of fine lines and wrinkles in just four weeks by speeding up cell-turnover and promoting collagen production. A multifaceted formula-while erasing lines, it shrinks open pores and reduces acne scars. Thanks to the brand's Black Diamond Technology, which includes fine black diamond powder and 111SKINs propriety NAC Y² complex, age-defying actives penetrate the skin deeper to better target advanced signs of aging. How to use: At night, apply 2-3 drops of the retinol oil by gently pressing product onto skin using your fingertips. Always use SPF the following morning. Start by using 1-2 times per week and increase frequency gradually. Follow with Black Diamond or NAC Y2 Cream (sold separately). Paraben-free Made in the Switzerland