New — Free Peptide Starter Guide (2026): 13 chapters, 34 cited studies

Get it free
ToolsCompareSNAP-8 vs Selank

SNAP-8 vs Selank

Side-by-side comparison of key properties, dosing, and research.

Skin & Cosmetic
SNAP-8
Cognitive Enhancement
Selank
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.
Selank is a synthetic heptapeptide analog of tuftsin developed in Russia. It is a potent anxiolytic that reduces anxiety and enhances cognitive function without sedation or addiction. It is approved for clinical use in Russia for anxiety disorders.
Half-Life
N/A — topical application; local effect duration depends on formulation
Minutes (but effects persist for hours)
Admin Route
Topical
SubQ, Intranasal
Research
Typical Dose
3–10% concentration in formulation
250–500 mcg
Frequency
1–2x daily
1–3 times 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)
  • Reduces anxiety without sedation
  • Enhances memory and learning
  • Improves focus and concentration
  • Stabilizes mood
  • Reduces physiological stress response
  • May enhance motivation
  • No addiction potential or withdrawal
  • Fast-acting — effects within 20–30 minutes
  • Approved clinically in Russia for anxiety disorders
Side Effects
  • Generally excellent tolerability
  • Rare: mild redness in sensitive individuals
  • Not suitable for injection (topical use only)
  • Mild sedation at higher doses (paradoxical)
  • Fatigue (rare)
  • Irritability during discontinuation (uncommon)
Stacks With