Pentapeptide-18 vs KPV
Side-by-side comparison of key properties, dosing, and research.
Skin & CosmeticAnti-Aging & Longevity
Pentapeptide-18Immune SupportRecovery & Repair
KPV- Summary
- Pentapeptide-18 (Leuphasyl) is a synthetic pentapeptide that mimics the sequence of enkephalin, an endogenous neuropeptide. It acts on neuronal pain receptors in facial muscles to reduce muscle contraction intensity and depth of expression lines, functioning similarly to Argireline (Acetyl Hexapeptide-3) but via a different receptor mechanism.
- KPV is a naturally occurring anti-inflammatory tripeptide derived from the C-terminal of alpha-MSH. It powerfully suppresses intestinal and systemic inflammation via melanocortin receptors, making it valuable for IBD, gut healing, and wound repair.
- Half-Life
- Not applicable (topical)
- Short half-life (~15–30 minutes), but effects persist longer due to receptor-level anti-inflammatory cascades
- Admin Route
- Topical
- Oral, SubQ, Topical
- Research
- —
- —
- Typical Dose
- 0.005–0.05% in formulation
- 500 mcg – 1 mg
- Frequency
- Twice daily
- Once to twice daily
- Key Benefits
- Reduces depth of expression lines (forehead, crow's feet, glabellar)
- Inhibits acetylcholine release for muscle-relaxing effect
- Complementary mechanism to Argireline for enhanced anti-wrinkle activity
- Reversible and well-tolerated
- No risk of systemic paralysis at cosmetic concentrations
- Suitable for daily use in serums and creams
- Reduces intestinal inflammation (IBD, Crohn's, colitis)
- Promotes gut mucosal healing and barrier integrity
- Accelerates wound healing topically
- Suppresses systemic inflammatory cytokines
- Antimicrobial properties against pathogens
- Reduces neuroinflammation when administered systemically
- May improve symptoms of inflammatory skin conditions
- Side Effects
- Generally very well-tolerated topically
- Rare skin sensitivity or mild irritation
- Theoretical opioid receptor desensitization with very prolonged high-dose use (not documented cosmetically)
- Generally very well tolerated
- Mild injection site reactions (SC)
- Rare: transient flushing
- Stacks With
- —
- —