SNAP-8 (Acetyl Octapeptide-3)

SNAP-8 is a synthetic eight-amino-acid cosmetic peptide that mimics the N-terminal portion of SNAP-25, a core component of the SNARE protein complex required for vesicular neurotransmitter exocytosis at the neuromuscular junction. By competitively destabilizing SNARE complex assembly, SNAP-8 attenuates acetylcholine release and reduces muscle-contraction signaling — without the membrane-cleaving mechanism of botulinum neurotoxin. Originally developed by Lipotec (now Lubrizol Life Science) as an extension of acetyl hexapeptide-3 (Argireline) with two additional residues (alanine and aspartate), SNAP-8 has become a widely studied non-paralytic alternative in topical cosmetic peptide research.

Key Research Findings:

• A 2021 International Journal of Cosmetic Science study reported up to 63% reduction in wrinkle depth following 28 days of topical SNAP-8 application versus baseline
• Comparative head-to-head testing showed ~30% greater anti-wrinkle activity versus Argireline (Acetyl Hexapeptide-3) at matched concentrations
• Mechanistic studies confirm no direct membrane proteolysis — distinct from the irreversible SNAP-25 cleavage caused by botulinum toxin
• Extended sequence length (8 vs. 6 amino acids) is associated with stronger SNAP-25 binding-site affinity and longer-lasting expression-line attenuation in cosmetic research models

For laboratory and research use only.