SNAP-8 is a trade name for acetyl octapeptide-3, a lab-made eight-amino-acid peptide used in anti-wrinkle skin care. We found no published human study of it on its own: the only trials we found tested it inside microneedle patches mixed with other active ingredients, so its own effect is unknown.
Also known as: acetyl octapeptide-3, SNAP 8.
There is no standard strength, and the two studies below do not give the amount of acetyl octapeptide-3 in their patches in the abstract.
Skin-care peptides are sold as cosmetic ingredients. FDA does not approve cosmetics before they go on the market. FDA says a product that only moisturizes so lines look less noticeable is a cosmetic, but a product intended to remove wrinkles or increase the skin's production of collagen is a drug or a medical device, even if it is sold as a cosmetic.
Both human studies we found used dissolving microneedle patches, tiny needles made of hyaluronic acid that dissolve into the skin, and both were written mainly by company researchers. In a 12-week study (Avcil 2020), patches containing acetyl octapeptide-3 plus four other active ingredients were applied to the corner of the eyes and the forearm; fine lines fell by 25.8% and no skin reactions were reported, but the abstract describes no placebo group. In a 24-person study (Shin 2024), a patch with acetyl octapeptide-3, a vitamin C compound and another active was compared with a plain hyaluronic acid patch on the other eye for 28 days; wrinkles improved more on the active side, with no side effects reported.
Because each patch had several actives and the needles themselves affect the skin, neither study shows what acetyl octapeptide-3 does by itself. A 2026 review of cosmetic peptides (Yi) notes that microneedles and other delivery systems make it hard to credit results to the peptide.
We could not find a published half-life or time to peak for acetyl octapeptide-3. It is applied to the skin, and the studies we found measured the skin, not levels in the blood, so we do not list one.
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