Supplied strictly for in vitro laboratory research. Not for human consumption.

GHK-Cu is a copper-binding tripeptide and one of the most extensively studied peptides in skin and regenerative research — with a literature trail stretching back more than fifty years. Unlike many research peptides whose data is purely preclinical, GHK occurs naturally in the human body and has been examined in dermatological, wound-healing, and gene-expression contexts. This guide summarises what it is and what that research has examined, for research context only.

What is GHK-Cu?

GHK-Cu is the copper(II) complex of glycyl-L-histidyl-L-lysine (GHK) — a small tripeptide of just three amino acids that binds copper with high affinity. It occurs naturally in human plasma, saliva, and urine, and its concentration in the body is widely reported to decline with age. At around 340 daltons it is a notably small molecule, which research has linked to how readily it interacts with cell receptors.

Discovery

GHK was discovered in 1973 by Loren Pickart, who isolated it from human plasma and, in work published in Nature, observed that it prolonged the survival of liver cells in culture. Recognising its strong copper-binding behaviour, researchers went on to study it predominantly in its copper-bound form, GHK-Cu.

Mechanism studied in research

In skin and tissue research, GHK-Cu has been studied across several overlapping mechanisms:

Collagen and ECM synthesis — signals fibroblasts to produce collagen, elastin, and glycosaminoglycans, the building blocks of the extracellular matrix.
Tissue remodeling — modulates matrix metalloproteinases (MMPs), the enzymes that balance breakdown and rebuilding of tissue.
Copper transport — its copper-binding structure facilitates the movement of copper into and out of cells, a cofactor in many repair processes.
Antioxidant and anti-inflammatory activity — studied for suppressing the inflammatory “acute-phase response” and reducing certain cytokines.
Angiogenesis — studied for stimulating the formation of new blood vessels in research models.
Gene expression — gene-profiling studies report that GHK can influence the expression of a large number of human genes, broadly shifting profiles toward patterns associated with younger or healthier tissue in those analyses.

An unusually deep research record

What sets GHK-Cu apart from many compounds in this category is the depth and length of its research record: more than fifty years of peer-reviewed study and hundreds of published papers, spanning its natural role in the body, collagen biology, and gene-expression profiling. It is also a long-established ingredient in topical cosmetic formulations. This gives GHK a richer and more human-relevant evidence base than most research peptides — though, as always, findings should be read in their proper research context.

Research and sourcing considerations

As with any research compound, reproducible results depend on verified identity and purity. Research-grade GHK-Cu should carry independent HPLC purity testing (≥99% purity) and a batch-specific certificate of analysis (COA) for the specific vial supplied.

DXB Peptides supplies research-grade GHK-Cu for in vitro laboratory use — HPLC-tested to ≥99% purity with a batch-specific COA, cold-chain handled and delivered across the UAE.

Frequently asked questions

What is GHK-Cu? The copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine — a naturally occurring human peptide studied in skin and regenerative research.

What is GHK-Cu studied for? Collagen and extracellular-matrix synthesis, tissue remodeling, antioxidant and anti-inflammatory activity, and gene-expression modulation — primarily in skin research.

Is GHK-Cu naturally found in the body? Yes. It occurs in human plasma and other fluids, with levels reported to decline with age.

What purity should research-grade GHK-Cu be? Look for independent HPLC testing at ≥99% purity, accompanied by a batch-specific certificate of analysis.

Important note

GHK-Cu is supplied strictly for in vitro laboratory research. It is not a medicine, is not approved for human therapeutic use, and is not for human consumption or in vivo administration.

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What Is GHK-Cu? Copper Peptide Research Overview