Our iconic vitamin A night serum contains next-generation retinAL (not retinol) which is clinically proven to act 11x faster than retinol,* to visibly smooth, brighten and firm skin. Unlike others, our globally patented stability system ensures maximum retinal potency and effectiveness until the very last drop. All this without irritation, thanks to our industry-leading encapsulation technology which delivers gentle yet powerful results - even on sensitive skin. Recommended by professionals and dermatologists worldwide, our unique ladder of 6 progressive strengths means you can keep experiencing ever-improving benefits that tackle the most stubborn fine lines, wrinkles and dark spots. Crystal Retinal is THE age-defying night serum for every serious skincare routine.