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PeptiBrief
Cosmetic peptide

Nonapeptide 3

Nonapeptide 3 is used or marketed in cosmetic formulations, with evidence that is usually formulation-dependent and rarely peptide-isolated.

Evidence confidence

Human
Not yet assessed
Trust Engine review pending.
Animal
Not yet assessed
Trust Engine review pending.
Mechanistic
Not yet assessed
Trust Engine review pending — see editorial links below.
Editorial evidence links exist, but this category has not yet completed Trust Engine assessment.
Safety
Not yet assessed
Trust Engine review pending.

Claimed uses

Mechanisms

Safety notes

Topical irritation or sensitisation is possible; ingredient-specific long-term evidence is limited.

Regulation
  • Cosmetic ingredient or formulation component; not an approved medicine.
Last reviewed
12 July 2026
Important PeptiBrief is an educational information platform. It does not diagnose, prescribe, sell peptides, recommend dosing, encourage self-experimentation or replace qualified medical care. Published scientific evidence is kept separate from community observations and uncertainty.