Medik8 Crystal Retinal 6 serum delivers a youthful complexion. This stable retinal night serum employs next-generation vitamin A to visibly improve wrinkles, texture, and tone. The crystal encapsulation system releases vitamin A gradually throughout the night, preventing overwhelmed skin. Hyaluronic acid and glycerin work to moisturize and hydrate, reducing dryness. Crystal Retinal 6 is suited for those familiar with Crystal Retinal 3 or other high-strength retinol products.