Discover youthful skin with Medik8 Crystal Retinal, the ground-breaking serum that reinvented vitamin A skincare. Featuring retinaldehyde, the next-generation retinoid that is 11x faster acting than retinol[1], now available in a series of 5 progressive strengths to accompany you on your journey to Beautiful Skin For Life. KEY BENEFITS Retinaldehyde is the star of Crystal Retinal; a next-generation form of vitamin A that is proven to deliver results up to 11x faster than retinol[1]. Yes, this is retinAL, faster-acting than retinOL, the classic form of vitamin A. RESULTS Uniquely stabilised for optimum potency, Crystal Retinal is clinically proven to provide incredible age-defying results in just one tube: think visibly brighter, firmer and smoother-looking skin. KEY INGREDIENTS Encapsulated Retinaldehyde, Patent-Pending Stabilisation System, Hyaluronic Acid, ​Vitamin E & Glycerin