Peptide Academy · Cosmetic
Also known as GHK
Educational research summary, not medical advice. Many compounds here are not approved for human use. Talk to a licensed clinician before making any health decision.
The Peptide Academy is free to read. Members also get the research protocols for Tripeptide-1, dose and vial tracking, and an AI Advisor with cited sources. Try it all free for 7 days, no card needed.
Start my free 7-day trialThe copper-free form of GHK, used topically as a matrikine repair signal.
Stimulates collagen and glycosaminoglycan synthesis; carrier peptide for copper in skin.
Cosmetic-grade evidence.
Common side effects
Histamine reactions
Itching or a rash can occur in sensitive skin.
Common fixes
Stop and get help
Basis: Cosmetic-ingredient safety assessments. Educational only, not medical advice.
Prescription retinoids (tretinoin), acids and benzoyl peroxide
Applied on the skin, these peptides have no meaningful medication interactions; layering with strong actives can raise irritation.
Basis: Topical cosmetic peptides with minimal absorption into the body. Educational only, not medical advice. Never stop or change a prescribed medicine without your prescriber.
Protocols & tracking are members-only
Members see the research protocols for Tripeptide-1, plan schedules, track every dose and vial, and ask the AI Advisor questions with cited sources. Try every Researcher feature free for 7 days, no card needed.