Delivering professional-grade results, this Medik8 Crystal Retinal 6 is perfect for those who want to upgrade their high-strength retinol results, improving the brightness, firmness, and clarity of your skin to reveal a radiant and youthful complexion. Smoothing the appearance of stubborn lines in just seven days, this serum is clinically proven to provide a 20% reduction in the appearance of wrinkles, a 20% reduction in visible hyperpigmentation, and an 11% increase in skin firmness*, leaving your skin fresh, youthful, and smooth.   This ground-breaking cream serum reveals younger-looking skin with just one tube, the 0.06% Retinaldehyde formula, a super-charged derivative of vitamin A, promoting your skin's natural collagen production, rebuilding lost collagen and increasing cell turnover, to leave your complexion smooth, bright and healthy. By requiring only one conversion to retinoic acid, the Crystal Retinal works 11 x faster than other forms of retinol, delivering results comparab