Reveal younger-looking skin with just 1 tube of Crystal Retinal. Our iconic vitamin A night serum is clinically proven to visibly smooth stubborn wrinkles, brighten dark spots, decongest and firm your skin - without irritation. Crystal Retinal contains retinAL; a next-generation vitamin A which acts 11x faster than standard retinOL. And, unlike others, our patented retinal stability system ensures unmatched retinal potency and effectiveness until the very last drop. It’s no wonder Crystal Retinal is the UK’s No.1 dermatological face serum. felt their skin had a more youthful appearance* 20% reduction in the appearance of wrinkles* 20% reduction in visible hyperpigmentation* 11% increase in skin firmness* 100% felt Crystal Retinal was gentle on their skin* *Proven via independent clinical study on 1 tube of Crystal Retinal 6. Tested on 33 participants over 12 weeks.