What it is
Resveratrol is a stilbene polyphenol found naturally in plants such as grapes, berries, and Japanese knotweed. In skincare and sunscreen formulations it is used primarily as an antioxidant that helps protect the formula and skin against oxidative stress, and as a skin-conditioning agent. It is typically incorporated at low concentrations and benefits from formulation that supports its stability.
Safety & warnings
Generally well tolerated in cosmetic use at typical low levels. It is not a known fragrance allergen and is not associated with comedogenicity. Because it can be sensitive to light and oxidation, it is usually stabilized within the formula.
Origin & sourcing
Natural or synthetic; obtained from plant sources such as Japanese knotweed (Polygonum/Reynoutria) or grapes, or produced synthetically.
Questions everyone asks
Why is resveratrol used in skincare?
It is valued as a polyphenol antioxidant that helps defend against oxidative stress and conditions the skin; it is not a UV filter.
Where does resveratrol come from?
It is a polyphenol found in plants such as grapes, berries, and Japanese knotweed, and can also be made synthetically.