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GHK-Cu

Also known as Copper peptide, Copper tripeptide-1

A reasonable skincare ingredient with thin but real human data. Injecting it is a different product with almost no safety evidence.

Information only. Not medical advice. Talk to a doctor before you start, stop or change anything.

This profile covers two very different products. Creams and serums are cosmetics. Injectable versions are unapproved drugs.

What people claim

  • Firms skin and smooths wrinkles
  • Speeds wound healing
  • Regrows hair
  • Injected, it rejuvenates the whole body

What the evidence shows

  • Reviews describe 12-week facial cream studies in about 70 women with better fine lines and skin density. These are small cosmetic studies, not large independent trials.[1]
  • A randomized trial after CO2 laser resurfacing found no objective improvement in wrinkles or skin quality, although patients were more satisfied.[2]
  • We found no solid human trial showing hair regrowth. That claim rests mainly on lab research.[1]
  • For injected GHK-Cu, FDA describes human data as limited.[3]

Known risks

  • Creams and serums: skin irritation is possible, as with most actives.
  • Injected: FDA flags possible immune reactions caused by aggregation and impurities.[3]
  • Unapproved injectables have not been evaluated for safety, quality or effectiveness.[4]

Reported side effects

Moderated user reports are not open yet, so nothing is shown here. They will be labelled as unverified personal accounts.

Legal status

A summary, not legal advice. Rules change, and sport bans are separate.

United States

Cosmetic, injectable unapproved

Fine as a cosmetic ingredient. Injectable GHK-Cu is unapproved and is not one of the six peptides in the Oct 2026 HHS policy.[5]

United Kingdom

Cosmetic, injectable unlicensed

Fine as a cosmetic ingredient. No licensed injectable medicine.

Australia

Cosmetic, injectable unapproved

Skincare is sold normally. TGA names injectable GHK-Cu among unapproved peptide products it has not evaluated.[4]

European Union

Cosmetic, injectable not authorised

Listed as a cosmetic ingredient. No authorised injectable medicine.

Sources

  1. 1.GHK peptide as a natural modulator of multiple cellular pathways in skin regenerationBioMed Research International, 2015
  2. 2.Effects of topical copper tripeptide complex on CO2 laser-resurfaced skinArchives of Facial Plastic Surgery, 2006
  3. 3.Bulk drug substances that may present significant safety risksUS FDA
  4. 4.Importing, compounding and supplying unapproved peptide productsTGA Australia
  5. 5.HHS interim enforcement discretion policy for six peptides (legal summary)Holland & Knight, Nov 2026

Profile last checked 7 Nov 2026.