SNAP-8 vs PE-22-28
Side-by-side comparison of key properties, dosing, and research.
- Summary
- SNAP-8 is a synthetic octapeptide cosmetic ingredient that reduces the depth of expression lines and wrinkles by competitively inhibiting the SNARE complex involved in acetylcholine release at neuromuscular junctions, providing a topical 'Botox-like' effect.
- PE-22-28 is a synthetic analog of spadin derived from sortilin, designed to block TREK-1 potassium channels with rapid-onset antidepressant and neurogenic effects. It shows fast-acting depression relief (within 24 hours) and promotes hippocampal neurogenesis.
- Half-Life
- N/A — topical application; local effect duration depends on formulation
- Relatively short; CNS effects may persist due to neurogenic mechanisms
- Admin Route
- Topical
- SubQ, Intranasal
- Research
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- Typical Dose
- 3–10% concentration in formulation
- 200–400 mcg
- Frequency
- 1–2x daily
- Once daily
- Key Benefits
- Reduces depth of dynamic expression wrinkles
- Smooths forehead lines, crow's feet, glabellar lines
- Non-invasive topical Botox alternative
- Can be incorporated into serums, creams, eye contour products
- Reduces muscle contraction without paralysis
- Improves skin texture and firmness over time
- Complements other anti-aging peptides (Argireline, Matrixyl)
- Rapid-onset antidepressant effects (within 24 hours)
- Promotes hippocampal neurogenesis
- Improves cognitive performance and memory
- Reduces anxiety and depressive behavior
- Novel mechanism — does not act on serotonin/dopamine/GABA receptors directly
- May help treatment-resistant depression
- Neuroprotective effects
- Side Effects
- Generally excellent tolerability
- Rare: mild redness in sensitive individuals
- Not suitable for injection (topical use only)
- Generally well tolerated in animal models
- Limited human data available
- Possible mild headache or transient mood changes at initiation
- Injection site reactions (SC)
- Stacks With
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