Nonapeptide-1
What do these badges mean?
Evidence tier
- AHuman-validated — Human trials showing positive results and good safety.
- BAnimal-grade — No human trials yet, but solid animal/preclinical evidence of effect and safety.
- CAnecdotal — No human or animal trials — only anecdotal/observational reports.
- DInsufficient evidence — No or insufficient evidence (encyclopedia only — never recommended by the builder).
Safety light
- 🟢 Green — Only mild, manageable side effects; reasonable safety data.
- 🟡 Yellow — Needs active management, has a meaningful contraindication/interaction, or has thin long-term data.
- 🔴 Red — Risk of a hospital-level event — treat with serious caution.
Browse-only — not on the protocol builder's curated shortlist, so the builder won't recommend it.
What is it?
Nonapeptide-1 (marketed as Melanostatine) is a pigment-pathway peptide alongside Decapeptide-12, targeting melanocyte signaling rather than the tyrosinase enzyme directly.
What does it do in my body?
Nonapeptide-1 antagonizes α-MSH at the MC1R receptor on melanocytes, reducing cAMP-mediated activation of tyrosinase and downstream melanin synthesis.
How can it help me?
- Where the science stands: Moderate — 4 studies, 1 RCT (tested as part of a proprietary combination product, not isolated)
The full evidence — every human, animal, and lab study, graded — is one tap away: use the See the deeper science → toggle at the top.
Is it dangerous? What are the side effects?
No adverse-effect data specific to Nonapeptide-1 in isolation was captured — the RCT tested the proprietary combination product, not the isolated peptide. Family-wide read: topical delivery carries a benign safety record.
Regulatory status: Cosmetic-grade OTC topical ingredient — not an FDA-reviewed drug.
Typical dosing
Talk to your medical provider before starting any protocol. That said, here are the doses most people commonly use — shared for educational purposes so you can have an informed conversation. These peptides are sold for research use only and are not FDA-approved drugs, and this isn't medical advice.
Topical-only cosmetic ingredient, tested in the referenced RCT as part of a proprietary combination product used for melasma maintenance vs. sunscreen. No standalone concentration figure was captured in the source profile.
What should I avoid combining — and what's synergistic?
Nonapeptide-1 doesn't have a dedicated stacking protocol in our notes — the interactions that matter most are in the safety section above. For how people combine it with other peptides, the deeper-science view has the full detail.
How can I buy this?
We don't have a verified affiliate source for Nonapeptide-1 yet, so there's no coupon or vendor link here — we won't point you to a seller we haven't vetted. When buying any research-use-only peptide, the single biggest variable is the supply chain: insist on a vendor that publishes third-party Certificates of Analysis (COAs) confirming identity and >99% purity. Working with a peptide-literate clinician is one solid route — see our provider directory — or check back as our verified sources list grows.
Real RCT signal for melasma maintenance — with the usual cosmetic-trial caveat that it was tested inside a combination product, not in isolation.
| Class | Pigment / brightening peptide — topical cosmetic peptide |
| Mechanism (one line) | Antagonizes α-MSH at the MC1R receptor on melanocytes → reduces cAMP-mediated tyrosinase activation and downstream melanin synthesis |
| Evidence base | Moderate — 4 studies, 1 RCT (tested as part of a proprietary combination product, not isolated) |
| Safety record | Topical-only; benign safety record (Safety: green) |
| Regulatory status | Cosmetic-grade OTC skincare ingredient, not an FDA-reviewed drug |
What it is
Nonapeptide-1 (marketed as Melanostatine) is a pigment-pathway peptide alongside Decapeptide-12, targeting melanocyte signaling rather than the tyrosinase enzyme directly.
How it works
Nonapeptide-1 antagonizes α-MSH at the MC1R receptor on melanocytes, reducing cAMP-mediated activation of tyrosinase and downstream melanin synthesis.
What the research shows
Public profile grade: Moderate — 4 studies, 1 RCT. The RCT (Chatterjee et al., 2021, Indian J Dermatol Venereol Leprol, PMID 34379946) tested a proprietary combination containing Nonapeptide-1 vs. sunscreen for melasma maintenance and found it efficacious — so the peptide is one component of the tested formula, not isolated. Supporting in-vitro work covers the α-MSH/MC1R melanogenesis pathway (e.g. PMID 35645678, PMID 39260749, both).
OHM’s internal 0035 categorization pass grades Nonapeptide-1 Tier C / green / recommend-eligible (Mela-X / Lipotec).
Status: real RCT signal for melasma maintenance, with the usual cosmetic-trial caveat that it was tested in a combination product.
Real-world protocol
Topical-only cosmetic ingredient, tested in the referenced RCT as part of a proprietary combination product used for melasma maintenance vs. sunscreen. No standalone concentration figure was captured in the source profile.
Side effects & management
No adverse-effect data specific to Nonapeptide-1 in isolation was captured — the RCT tested the proprietary combination product, not the isolated peptide. Family-wide read: topical delivery carries a benign safety record.
Regulatory status
Cosmetic-grade OTC topical ingredient — not an FDA-reviewed drug.
Sources
- (thepeptidelist.com directory, captured 2026-06-07) — profile grade: Moderate, 4 studies, 1 RCT. Studies cited: Chatterjee et al., 2021, Indian J Dermatol Venereol Leprol, PMID 34379946; PMID 35645678; PMID 39260749.
- OHM tier/safety grading: Tier C / green / recommend-eligible, Mela-X / Lipotec.
- Migrated from
cosmetic-topical-peptides-cluster.md(2026-06-10 cluster build) as part of the cluster-to-standalone-article migration.
Related: Decapeptide-12
Sources & references
- (thepeptidelist.com directory, captured 2026-06-07) — profile grade: Moderate, 4 studies, 1 RCT. Studies cited: Chatterjee et al., 2021, Indian J Dermatol Venereol Leprol, PMID 34379946; PMID 35645678; PMID 39260749.
- OHM tier/safety grading: Tier C / green / recommend-eligible, Mela-X / Lipotec.
- Migrated from
cosmetic-topical-peptides-cluster.md(2026-06-10 cluster build) as part of the cluster-to-standalone-article migration.
Related: Decapeptide-12