3rd party lab tested

99%+ purity verified

Certificate of analysis with every order

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Free shipping over $300 CAD

Research use only

3rd party lab tested

99%+ purity verified

Certificate of analysis with every order

Fast & discreet shipping

Free shipping over $300 CAD

Research use only

3rd party lab tested

99%+ purity verified

Certificate of analysis with every order

Fast & discreet shipping

Free shipping over $300 CAD

Research use only

3rd party lab tested

99%+ purity verified

Certificate of analysis with every order

Fast & discreet shipping

Free shipping over $300 CAD

Research use only

The JournalGHK-Cu: Copper Peptide Research on Collagen and Skin Models
ResearchSeptember 27, 2026·5 min read

GHK-Cu: Copper Peptide Research on Collagen and Skin Models

GHK-Cu is a copper-binding tripeptide studied in skin, collagen, and gene-expression models. This note summarises the mechanism papers actually describe.

GHK-Cu is the copper complex of the tripeptide glycyl-L-histidyl-L-lysine. It is small, it binds copper, and it shows up in dermatological and cell-culture research rather than in incretin or growth-hormone papers.

What the studies look at

In vitro papers report effects on collagen synthesis, metalloproteinases, and antioxidant gene expression in fibroblast models. Animal and explant work has looked at wound-closure models. Those designs do not transfer into a home protocol, and this product is not sold for that.

Handling notes for the lab

Copper peptides are sensitive to pH and to chelators. A research COA should show peptide identity and purity. It will not tell you a cosmetic concentration. Match the lot number on the vial to the certificate before you log the material into an experiment.

  • Copper complex of the GHK tripeptide
  • Studied in fibroblast and wound-model literature
  • Not an incretin or growth-hormone compound
  • Research use only

This article is for educational and research purposes only. GHK-Cu sold by Kirei Clinic is not for human use.