Lumene Vitamin C Hyaluronic Essence
$24; amazon.com
💗 Recommended product
"I think vitamin C is maybe the number-one, top antiaging ingredient of all time," says New York dermatologist Dennis Gross, MD. "It's the only ingredient that both directly stimulates fibroblast cells to make collagen and protects the collagen you already have by acting as an antioxidant." However, vitamin C—also a champion brightener by virtue of its melanin-disrupting properties—has historically been tricky to deliver topically: It's easily deactivated by exposure to light and air, and its most common form, ascorbic acid, is naturally water-soluble, meaning that it's repelled by the skin's lipid components.
