Ingredient Beauty BenefitsAntioxidant · Resveratrol
Resveratrol: in the first trial of this ingredient alone, wrinkles moved only in the arm that both swallowed and applied it
2025 brought the first study to test this as a sole active. A 134-person, 8-week placebo-controlled trial split oral and topical into four combinations, and wrinkle scores fell significantly only in the arm that was active on both. Meanwhile sebum rose significantly in the arms applying the active cream. Nothing else differed.
Last checked Sep 21, 2026
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- What it is
A polyphenol found in grape skin, peanuts and Japanese knotweed. Used in cosmetics and in supplements.
- What it is used for
Serums and creams sold on wrinkles and firmness, and capsules to swallow.
- How it is said to work
It is said to cut reactive oxygen species and act on cellular ageing pathways. Most of that account comes from the laboratory.
There are no numbers and no citations in this box. What has been established, and how far, is below.
At a glance
- In pregnancy
- Not established
- Irritation
- Minimal
- Daytime use
- ✓ Fine
- How well established
- Early research
- Concentration studied
- 1.5%
- Length of the studies
- 2–8 weeks
Not a measurement — reported irritation grouped into five steps. It varies between people.
“Concentration studied” and “Length of the studies” are taken straight from the research on this page. They are not a recommended dose, and the figure for each finding is written out in the text.
This is not how large the effect is but how well confirmed it is. It shows the highest grade among the findings on this page.
Resveratrol is a polyphenol found in grape skin and peanuts. It has been sold alongside the word 'anti-ageing' for a long time, and there is plenty of laboratory work.
But until 2025 there was no human trial of this ingredient on its own. The authors say so in the abstract — it had never been tested as the sole active, orally or topically.
That first trial is well designed. Four arms: oral (placebo/active) × topical (placebo/active). A design like that can separate whether the swallowing did the work, whether the applying did, or whether both are needed.
And the answer split.
Wrinkles reached significance only in the arm active on both sides. And sebum rose — in the arms applying the active cream.
Three entries below. The first two are the front and back of the same trial; the third is a different one.
Contents
What is established
The same ingredient at a different strength, in a different formula, is a different product. These are the conditions the studies used.
Wrinkles fell significantly only in the arm that both swallowed and applied it
A 2025 trial in Front Aging. Double-blind, randomised, placebo-controlled, in healthy women aged 40 and over.
Four arms:
- P/P — oral placebo plus topical placebo
- A/P — oral resveratrol plus topical placebo
- P/A — oral placebo plus topical resveratrol
- A/A — active on both
The doses were a 75 mg capsule and 1 g of 1.5% cream, twice daily, for 8 weeks. 134 enrolled and 122 completed.
A great many things were measured — wrinkles, skin age, temperature, pore size, forehead lines, glabellar lines, crow's feet, nasolabial folds, pigmentation, sebum, moisture, elasticity, a self-assessment questionnaire, and serum resveratrol levels.
Results:
- At week 8, wrinkle scores were significantly lower in A/A than in P/P.
- No other skin parameter differed significantly.
- Serum resveratrol conjugate levels rose significantly in the arms that swallowed it (A/P, A/A).
How to read it.
First, what reached significance was A/A. Neither swallowing alone nor applying alone beat placebo. Separating exactly that is what the design was built for, and the answer it separated out is 'it moved only with both'.
How to read that answer is open. It may really take both together. Or each effect may be small enough that 134 people split four ways could not catch them separately. That is about thirty per arm.
Second, a lot was measured and one thing reached significance. Look at that list again. More than ten parameters were measured, and wrinkles was the one. The more parameters, the higher the chance that one reaches significance by luck.
Third, two ingredient companies appear in the author affiliations — Lallemand Bio-Ingredients and Evolva AG. We mark that on the badge as 'industry funding'.
We still place it at 'early evidence'. It is the first trial to ask about this ingredient alone properly, and the design itself is honest — including that it reported the combination-only result as it came.
- Randomised controlled trial in people · 134 participants · 8 weeks · Compared with vehicle (same formula minus the active) · Funding manufacturer-funded · Endpoint instrument measurement PMID 41488277
And sebum rose on the side that applied it
Same trial, same people.
- Sebum rose in all treatment groups.
- And U-zone sebum in the active-topical arms (P/A, A/A) was significantly higher at week 8 than in the placebo-topical arms (P/P, A/P).
Why this has its own entry.
This site records what moved in the wanted direction and what moved in the unwanted direction at the same size. And here both came out of the same cream.
The cream that reduced wrinkles is the cream that raised sebum.
Some people welcome more sebum. On dry skin that can be true. But for anyone whose concern is oiliness it runs the other way — which is part of why this site keeps that concern separate.
And this result is not what 'antioxidant' would predict. The trial does not explain why sebum rose. Nor does it separate the cream base from the resveratrol — sebum rose in the placebo-topical arms too. The active arms were simply higher.
We think it is a number worth seeing when choosing a product, so we put it here.
- Randomised controlled trial in people · 134 participants · 8 weeks · Compared with vehicle (same formula minus the active) · Funding manufacturer-funded · Endpoint instrument measurement PMID 41488277
It beat saline after a laser procedure — but two serums were used together
A 2024 trial in Shanghai. Randomised, investigator-blinded, split-face — and unusually for this layer, the comparator was saline.
51 people aged 18 to 65 who had ablative fractional CO2 laser took part. Mean age 29.8; 29 (56.9%) were women.
- One side of the face — a vitamin C and ferulic acid serum plus a resveratrol night serum
- The other side — normal saline
Applied for 14 days.
Results:
- erythema index at day 14 — 308.9 vs 325.3 (p = 0.034)
- median time to complete scabbing detachment — 6.0 vs 6.5 days (p = 0.018)
- change in melanin index — −7.4% on the serum side against +0.2% on saline (Δ = −7.6%, p = 0.044)
- hydration was higher on the serum side throughout the 14 days
How to read it.
First, the comparator was saline. That is uncommon in this layer, and it makes this trial firmer than most pages here. But saline is not a moisturiser either. So part of this result may belong to 'something damp was applied' rather than to resveratrol.
Second, there were two serums. A vitamin C and ferulic acid serum went on as well. This site has separate pages for ascorbic acid and ferulic acid, and there is evidence on that side too. So this result cannot be read as resveratrol's.
Third, the authors' own limitations — contamination between sides in a split-face design, and adherence.
Fourth, look at the size of the numbers. The median difference in scabbing detachment is half a day. Statistically significant and visibly different in the mirror are two different statements.
So it sits at 'early evidence'.
- Randomised controlled trial in people · 51 participants · 2 weeks · Compared with vehicle (same formula minus the active) · Funding not declared · Endpoint instrument measurement PMID 38828801
How to use it
- The trial used 1 g of 1.5% cream twice daily and a 75 mg oral capsule. Product concentrations are usually not stated.
- It ran 8 weeks. That is not a basis for judging it sooner.
- Wrinkles moved only in the arm doing both. If you plan to do one, do it knowing that.
- Think again if oiliness is your concern. Sebum was higher in the active-topical arms above.
- For thicker evidence on wrinkles and firmness, retinol, retinaldehyde and sunscreen are far thicker on this site.
Cautions
- The trials reported adverse events as mild. But they ran 8 weeks and 14 days.
- There is a swallowed form. If you take other medicines, check in a consultation. Interactions with platelets and liver enzymes are discussed for resveratrol.
- Sebum can rise. U-zone sebum was significantly higher in the active-topical arms above.
- We could not find data on use in pregnancy.
- There is one human trial of it alone, from 2025.
With a new ingredient, apply a small amount somewhere inconspicuous, such as the inner arm, for two days first. Stop if it reddens or stings.
Related skin concerns
What this article relies on
- PubMed — 미국 국립의학도서관 문헌 데이터베이스National Library of Medicine · Checked on 2026-09-16