Acetyl Octapeptide-3 (SNAP-8)
SNAP-8 (Acetyl Octapeptide-3) is a synthetic octapeptide designed as an elongated, more potent version of the popular hexapeptide Argireline. It functions as a topical "Botox-like" peptide by modulating the SNARE complex to reduce the release of acetylcholine, thereby relaxing facial muscles and reducing the depth of expression wrinkles.
01Dosing reference
02Mechanism of action
SNARE complex modulation
SNAP-8 mimics the N-terminal end of SNAP-25, competing with endogenous SNAP-25 for a position in the SNARE complex.
Inhibition of neurotransmitter release
By destabilizing the SNARE complex, it prevents the fusion of acetylcholine-containing vesicles with the neuronal membrane, reducing acetylcholine release into the synaptic cleft.
Muscle relaxation and wrinkle reduction
The attenuated muscle contraction leads to a relaxation of facial muscles, which visibly reduces the depth and appearance of expression lines and wrinkles.
03Human evidence
Reduction in wrinkle depth by up to 63% over 28 days.
Clinical cosmetic studies on human volunteers applying SNAP-8 topically showed significant reduction in the severity of wrinkles around the eyes compared to baseline.
Improved skin smoothness and reduced expression lines.
Cosmetic trials evaluating topical formulations containing Acetyl Octapeptide-3 demonstrated visible improvements in skin texture and wrinkle area without systemic side effects.
04Preclinical evidence
Inhibition of SNARE complex formation in vitro.
Biochemical assays demonstrated that SNAP-8 effectively competes with SNAP-25, preventing the proper assembly of the SNARE complex necessary for vesicle exocytosis.
Reduction of neurotransmitter release in neuronal cell cultures.
In vitro studies using neuronal models showed a dose-dependent decrease in acetylcholine release upon treatment with SNAP-8.
05What is known vs. unknown
- SNAP-8 is an elongated version of Argireline (Acetyl Hexapeptide-8), designed to be more potent.
- It works topically to relax facial muscles by inhibiting the SNARE complex, earning it a 'Botox-like' reputation.
- Clinical cosmetic studies report up to a 63% reduction in wrinkle depth after 28 days of regular application.
- It is non-invasive and does not carry the risks of systemic toxicity associated with botulinum toxin injections.
- Long-term efficacy and whether the skin builds tolerance to the peptide over years of use remain under-researched.
- Its large molecular size limits deep skin penetration, meaning its effects are primarily superficial unless combined with effective delivery systems.
- It requires continuous application to maintain results, as the muscle-relaxing effects are temporary.
06Safety & regulatory context
07Compared with Argireline (Acetyl Hexapeptide-8)
08Appears in protocols
09Glossary
10Knowledge check
11Sources
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