SNAP-8
SNAP-8 (acetyl octapeptide-3, also marketed as acetyl glutamyl octapeptide-1) is a synthetic eight-amino-acid peptide used in topical cosmetics to soften the appearance of expression lines such as forehead creases and crow's feet. It is an extended analog of the earlier hexapeptide Argireline (acetyl hexapeptide-8) and is applied to the skin rather than injected. It is a cosmetic ingredient, not a drug, and is not a substitute for injectable neuromodulators.
Adults looking for a non-injectable, over-the-counter topical option to reduce the look of dynamic expression wrinkles around the forehead and eyes.
SNAP-8 is a synthetic octapeptide (acetyl glutamyl octapeptide-1 / acetyl octapeptide-3) developed as a longer analog of acetyl hexapeptide-8, itself modeled on the N-terminal end of the SNAP-25 protein. SNAP-25 is a component of the SNARE complex that vesicles use to release the neurotransmitter acetylcholine at the neuromuscular junction. In laboratory and supplier models, the peptide is proposed to compete with SNAP-25 for a position in the SNARE complex, modestly reducing the efficiency of catecholamine/acetylcholine vesicle release and thereby lessening the muscle contractions that create dynamic expression lines.
This is a topically applied, cosmetic-strength effect and is far weaker and more superficial than the intramuscular action of botulinum toxin. Independent, peer-reviewed clinical evidence for meaningful wrinkle reduction from topical octapeptides is limited, and skin penetration of these relatively large, charged peptides is a real pharmacological question. SNAP-8 is sold as a cosmetic ingredient for research and topical formulation use; it is not an FDA-approved drug, has not been evaluated by the FDA for treating or preventing any condition, and it should not be injected or ingested.
Anyone with skin conditions, allergies, or specific aesthetic goals should consult a qualified physician or dermatologist rather than relying on cosmetic peptide claims.
Topical only: SNAP-8 is formulated into a serum or cream at roughly 3-10% of a peptide solution and applied to clean skin over the target areas once or twice daily. It is not injected or taken systemically; the 'dose' is the applied volume of the finished topical product, so follow the specific product's directions rather than a fixed milligram amount.
Marketing and small supplier studies suggest a gradual softening of wrinkle appearance over about 4-8 weeks of consistent twice-daily use, with effects reversing after discontinuation.
Commonly combined in topical formulations with acetyl hexapeptide-8 (Argireline), Matrixyl (palmitoyl peptides), and hydrating agents like hyaluronic acid; typically used as part of a topical skincare routine rather than a systemic stack.
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This page is educational reference material about compounds studied in research settings. It is not medical advice, and nothing here is a recommendation to buy, possess, or use any compound. Research findings described are from published literature; individual compounds may not be approved for human use. Talk to a licensed clinician about anything that affects your health.