Resveratrol
Also known as: trans-resveratrol, grapevine-extract
The polyphenol from red wine grapes that makes more sense on your face than in your glass. Caudalie's whole thesis.
What It Does
Deep Dive
Resveratrol โ a stilbenoid found in grape skins, berries and peanuts โ is a potent antioxidant that activates SIRT1 (the "longevity gene" pathway) in skin cells. Topically, it neutralizes free radicals, complements vitamin C, and reduces UV-induced damage when used AM. Caudalie built an entire Vinoperfect and Premier Cru line on it; SkinCeuticals uses it in the overnight Resveratrol B E. It is finicky โ oxidizes when exposed to air and light โ so decant-style packaging and amber glass actually matter. Expect gradual luminosity over 6โ8 weeks rather than a dramatic flip.

