Medik8 Crystal Retinal 3 Brand New Originally $68 Reveal younger-looking skin with just 1 tube of Crystal Retinal, the retinal facial serum that transforms your nightly skincare routine. Our iconic anti-aging vitamin A night serum is clinically proven to visibly smooth stubborn facial wrinkles, brighten dark spots, decongest and firm your skin - without irritation. [1] Crystal Retinal contains retinAL; a next-generation vitamin A which acts 11x faster than standard retinOL. [2] 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 No.1 Retinal Serum Worldwide and a favorite retinal/retinaldehyde product among skincare experts.[3]