Youth Intelligence Age Defying Serum from Zelens is infused with a targeted complex of active ingredients and eight fermented algae, combined to reduce the signs of ageing for a smoother and firmer complexion. Developed by skin health expert Dr Marco Lens, the Youth Intelligence Age Defying Serum is a concentrated formula inspired by your skin cell's biological clock, helping to diminish fine and wrinkles ' leaving your complexion looking notably smoother and plumper. Gliding seamlessly onto the skin to lift the appearance of fine lines and wrinkles, it's the ultimate age-defying solution that'll leave your complexion looking healthy and renewed.