What Is GHK-Cu?

How is GHK-Cu classified and what is its structure?

GHK is a three-amino-acid peptide (Gly-His-Lys) with a high binding affinity for copper(II) ions; the bound complex is referred to as GHK-Cu. In the literature it is grouped with the copper-peptide class of signalling molecules, and the GHK sequence has been reported as occurring naturally in human plasma.

How is GHK-Cu’s mechanism studied in research?

Research into GHK-Cu characterises it in relation to:

• Copper transport / chelation — its defining biochemical property.
• Extracellular-matrix remodelling — studied in connective-tissue and skin-science models, including effects on matrix metalloproteinases.
• Gene-expression and antioxidant pathways — investigated in cell-culture research.

These statements describe the published scientific record; they are not claims about any effect in humans.

What kind of research has been published on GHK-Cu?

GHK and GHK-Cu appear across cell-biology and matrix-science literature, including primary fibroblast-culture studies and review articles on copper-peptide chemistry. The literature has continued to grow: a 2024 review in BioImpacts surveyed topically applied GHK peptides and their permeability chemistry, and a 2025 study in Biomaterials Research examined a GHK-Cu-based hydrogel biomaterial in laboratory wound models. Findings are reported in the primary scientific literature listed below.

What compounds is GHK-Cu studied alongside?

In the published literature, GHK-Cu is most directly compared with palmitoyl-GHK (Pal-GHK), the lipidated derivative of the same tripeptide, which is analysed against it in permeability research. In broader reviews of investigational peptides it also appears alongside tissue-repair compounds such as BPC-157 and TB-500. These groupings describe how the compounds are classified in published research; they do not imply equivalence between compounds or any human-use indication.

How is GHK-Cu supplied, tested and handled?

Lazarus Labs supplies GHK-Cu as a lyophilised reference material, independently tested to 99%+ purity, with a batch Certificate of Analysis (COA). Store cold and protected from light, per standard laboratory practice.