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Argireline (Acetyl Hexapeptide-3)
Also known as: Acetyl Hexapeptide-3, Acetyl Hexapeptide-8, Ac-EEMQRR-NH2
Confidence
Updated 2026-03-20
Argireline is a synthetic hexapeptide developed by Lipotec (now part of Lubrizol/Berkshire Hathaway) and widely marketed as "Botox in a bottle." It is one of the most commercially successful cosmeceutical peptides, found in thousands of skincare products targeting expression lines and dynamic wrinkles. It works topically by inhibiting neurotransmitter release at the neuromuscular junction, providing a mild muscle-relaxing effect without injection.
Class
Cosmeceutical Peptide
Routes
Topical
Half-Life
N/A (topical cosmeceutical — not systemically absorbed)
Argireline is a fragment analog of the SNAP-25 (Synaptosomal-Associated Protein 25) N-terminal domain. It competes with native SNAP-25 for binding to the SNARE complex (SNAP-25, syntaxin, VAMP), which is required for synaptic vesicle fusion and acetylcholine release at the neuromuscular junction. By partially inhibiting SNARE complex assembly, Argireline reduces acetylcholine release, leading to decreased muscle contraction intensity and softer dynamic wrinkles (expression lines).
Half-Life
N/A (topical cosmeceutical — not systemically absorbed)
Bioavailability
Topical penetration only — limited to upper dermis. No systemic bioavailability.
No FDA-approved indications (cosmetic use). Cosmeceutical: dynamic wrinkles (forehead lines, crow's feet, frown lines), expression line prevention, anti-aging skincare.
Blanes-Mira et al. (2002, International Journal of Cosmetic Science) first demonstrated SNARE complex inhibition in vitro. Lipotec-sponsored studies showed up to 30% reduction in wrinkle depth after 30 days of twice-daily application at 10% concentration. Independent studies confirm modest wrinkle reduction, though effect size is significantly less than botulinum toxin. A 2013 review concluded evidence supports mild anti-wrinkle activity. Effect is dose-dependent and reversible upon discontinuation.
Human Studies
8
Animal Studies
5
Topical: excellent safety profile. Well-tolerated at concentrations up to 10%. Rare skin irritation or contact sensitization. No systemic effects (peptide does not penetrate to systemic circulation). Non-toxic in standard cosmetic safety testing. Safe for daily long-term use.
Unclassified — cosmetic ingredient. Not regulated as a drug. One of the most successful anti-aging peptide ingredients commercially. Found in products from The Ordinary, Peter Thomas Roth, and hundreds of other brands. No prescription required.
Drug Interactions: None known for topical use. Can be layered with retinoids, vitamin C, hyaluronic acid, and other anti-aging actives. Does not interact with botulinum toxin injections — some practitioners recommend combining both. Monitoring: Visual/photographic wrinkle assessment. Skin profilometry in research settings. Research Gaps: Optimal concentration for maximal SNARE inhibition. Depth of dermal penetration with various delivery vehicles. Head-to-head comparison with SNAP-8 (acetyl octapeptide-3). Long-term cumulative efficacy data.
Topical (facial application)
Common Range
5–10% concentration in serum or cream formulation
Timing
Morning and evening after cleansing
Frequency
Twice daily
Cycling
Continuous use. Effects build over 2–4 weeks and are maintained with ongoing use. Effects reverse upon discontinuation.
Important Note
Cosmeceutical — not a drug. Apply to areas of dynamic wrinkles (forehead, around eyes, between brows). Best results at 10% concentration. Often combined with SNAP-8 for enhanced SNARE inhibition. More effective as preventive/maintenance than treatment of deep established wrinkles.
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Cosmetic / Anti-Wrinkle Peptide
Snap-8 is an octapeptide used in cosmeceutical formulations as a topical anti-wrinkle agent. It is an elongated analog of Argireline (Acetyl Hexapeptide-3) designed to modulate the SNARE complex involved in neuromuscular junction signaling, thereby reducing muscle contraction intensity and expression line depth. It is marketed as a "topical Botox alternative," though this comparison significantly overstates its efficacy.
Skin / Collagen-Stimulating Peptide
Palmitoyl Pentapeptide-4 (Matrixyl) is one of the most well-studied cosmeceutical peptides, developed by Sederma. It is a lipopeptide fragment of pro-collagen I that stimulates collagen and extracellular matrix production in the skin. It was one of the first peptides to demonstrate anti-aging efficacy in peer-reviewed dermatology studies and has become a staple ingredient in anti-aging skincare formulations worldwide.
Disclaimer: This content is for educational and informational purposes only and does not constitute medical advice. Always consult with a licensed healthcare provider before starting, stopping, or modifying any peptide therapy. PeptideSupplierMatch does not prescribe, sell, or distribute peptides.
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