Nonapeptide-1 vs KPV
Side-by-side comparison of key properties, dosing, and research.
Skin & Cosmetic
Nonapeptide-1Immune SupportRecovery & Repair
KPV- Summary
- Nonapeptide-1 is a synthetic 9-amino acid peptide that inhibits melanin production by blocking α-MSH (alpha-melanocyte stimulating hormone) receptor binding. Used in cosmetic formulations for skin lightening and evening skin tone, it is particularly effective for UV-induced and hormonal hyperpigmentation.
- 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
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- Typical Dose
- 0.05–0.5% concentration in formulation
- 500 mcg – 1 mg
- Frequency
- Twice daily
- Once to twice daily
- Key Benefits
- Inhibits UV-induced tanning and hyperpigmentation
- Reduces hormonal melasma
- Evens skin tone at receptor level
- Well-tolerated with minimal irritation
- Complementary to tyrosinase inhibitors for enhanced brightening
- Reduces post-inflammatory hyperpigmentation
- 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
- Rare contact sensitivity in susceptible individuals
- Theoretical risk of excessive depigmentation with prolonged high-concentration use
- Generally very well tolerated
- Mild injection site reactions (SC)
- Rare: transient flushing
- Stacks With
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