Rediscover youthful skin with Crystal Retinal™, Medik8’s ground-breaking vitamin A serum. Available in a series of progressive strengths to follow you on your journey to Beautiful Skin For Life. Discover more in the Crystal Retinal Showcase 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 quicker than retinol. Yes, this is retinAL, faster-acting than retinOL. RESULTS Uniquely stabilised for optimum potency, Crystal Retinal is renowned for providing incredible age-defying results: think visibly brighter, firmer, smoother-looking skin in just 4 weeks.*