Ingredient reference
Resveratrol
Resveratrol is a polyphenol — a class of plant compounds — best known from grape skin. In cosmetics it is used as an antioxidant ingredient, and it is sensitive to light.
Where it comes from
Grapes are the famous source, but most cosmetic resveratrol is extracted from Japanese knotweed, which contains far more of it and is cheaper to process. Both routes give the same compound.
Why the packaging matters
Resveratrol degrades on exposure to light and air. Formulas containing it are often housed in opaque or tinted packaging with a pump rather than an open jar. If a product containing it comes in clear glass, keep it in a drawer rather than on a windowsill.
What antioxidant means here
Antioxidant describes chemical behaviour: these compounds react readily with oxygen. Inside a formula that is useful for the formula itself, helping to slow the oxidation of the oils around it. Anything about a specific product belongs on that product's page, not here.
What this page does not do
This is an ingredient reference. It describes what the ingredient is, how it behaves in a formula, and where it appears in our catalogue. It does not make a performance, safety, suitability or timeline claim, and it does not replace the complete ingredient list on a product page.
Quick answers
Does cosmetic resveratrol come from red wine?
The compound is present in grape skin, and so in red wine. Most cosmetic resveratrol is extracted from Japanese knotweed, a richer source.
How should I store a product containing it?
Closed, away from direct light and heat. Resveratrol degrades with light and air exposure.
Is antioxidant a claim about my skin?
No. It describes how the compound behaves chemically. Product-specific information is on the relevant product page.
Where do I find the complete formula?
On the product page for the item you are considering. Read the complete ingredient list there before purchasing.
In these formulas
Each product page carries its own complete ingredient list. Read it there before purchasing.
