What Is GHK-Cu?

GHK-Cu is one of the more distinctive peptides in the research space because it does not travel alone — it carries a copper atom. That copper-peptide pairing is central to why it is studied, and what sets it apart from most other research peptides.

What is GHK-Cu?

GHK-Cu is a copper-binding tripeptide — the three-amino-acid sequence glycyl-L-histidyl-L-lysine (GHK) bound to a copper ion (Cu). It is investigational and supplied to researchers as a lyophilized powder for laboratory use only.

How does it work?

The GHK sequence has a natural affinity for copper, and much of the research interest centers on that copper-peptide complex and the role it plays in tissue signalling. Because it delivers copper as part of the molecule, GHK-Cu is studied differently from peptides that act only on a receptor.

Most research peptides act on a receptor; GHK-Cu is studied as a copper-carrying complex — that pairing is the whole point.

What is it studied for?

GHK-Cu is studied largely in the context of skin, wound, and tissue-remodeling research, as well as hair-related pathways. As always, this is research context — not a description of any effect in humans.

How is GHK-Cu handled in the lab?

Like most research compounds, GHK-Cu arrives as a lyophilized (freeze-dried) powder. Keep the sealed vial cool, dry, and out of light; reconstitute with bacteriostatic water (see how to reconstitute); then refrigerate the solution, where it stays stable for weeks.

Why purity matters

With an investigational compound, knowing exactly what is in the vial is everything. A reputable source provides a Certificate of Analysis (COA) showing third-party HPLC purity and mass-spec identity for that specific batch — see what is a COA.