RENEW AND REVIVE. Reveal smoother, youthful skin with Medik8 Crystal Retinal night serum, an advanced face serum and hyaluronic acid serum for face. Formulated with retinaldehyde, hyaluronic acid, glycerin, and vitamin E to reduce fine lines. SMOOTH SKIN, SIMPLIFIED. The star of this hydrating serum is Retinaldehyde, a classic form of vitamin A that delivers rapid anti-aging results up to 11 times faster than retinol. This face serum for women and men resurfaces skin for a radiant look. CHOOSE YOUR SKIN-SMOOTHING STRENGTH. Our Crystal Retinal skin serum comes in progressive strengths, ideal for beginners or experienced users. This night serum for face delivers wrinkle-reducing results while supporting radiant, smooth skin. EXPERIENCED RETINOID USERS. Crystal Retinal 6 is great if you’ve finished 3 or already use a retinoid. This anti aging serum and hydrating serum for face contains 0.06 percent retinaldehyde to help reduce wrinkles and promote smoother skin. CUTTING-EDGE SKINCARE TECHNOLOGIES. Medik8 leads in innovation with anti aging skin care products and advanced skin serum for face, designed by in-house scientists to deliver the most well-researched results for visibly healthier, youthful skin. Medik8 Crystal Retinal Serum is a gluten-free formula that helps reveal younger-looking skin with just one tube. This iconic vegan night serum smooths stubborn wrinkles while evening skin tone for a refined complexion. As a face serum, it firms skin without irritation. Formulated as a hyaluronic acid serum, it features next-generation retinal, a vitamin A that acts 11 times faster than standard retinol. This anti-aging formula uses a patented retinal stability system to maintain maximum potency and effectiveness until the last drop.