What is GHK-Cu?
GHK-Cu (Copper Peptide GHK-Cu) is a naturally occurring tripeptide — glycyl-L-histidyl-L-lysine — bound to a copper ion. First isolated from human plasma in 1973, it is found in blood, saliva, and urine, and plays a critical role in wound healing, skin regeneration, and tissue remodelling. Plasma concentrations of GHK-Cu decline significantly with age, correlating with reduced regenerative capacity.
Mechanism of Action
GHK-Cu operates through several interconnected pathways. It stimulates collagen, elastin, and glycosaminoglycan synthesis, directly improving skin structure and elasticity. It activates antioxidant enzymes, reduces oxidative stress, and modulates over 4,000 human genes — upregulating tissue repair pathways and downregulating inflammatory and cancer-related genes. Its copper-chelating properties also support enzymatic activity critical to connective tissue integrity.
Key Research Applications
- Skin Regeneration: In vitro and preclinical studies have reported increased dermal thickness and improvements in collagen density markers. Researchers have observed changes in fine line and wrinkle depth in some study models.
- Wound Healing: Animal model research has documented accelerated wound closure in burn and surgical incision models, with investigators attributing effects to fibroblast proliferation and collagen synthesis activity.
- Hair Growth: Preclinical research has investigated GHK-Cu's effects on hair follicle morphology and growth cycle activity, with some studies reporting increased follicle size. Research into androgenic alopecia applications remains at an early stage.
- Anti-Inflammatory: In vitro studies have reported reductions in pro-inflammatory cytokine expression and oxidative stress markers following GHK-Cu exposure.
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Neuroprotection: Early-stage research has explored potential nerve regeneration and cognitive marker effects in preclinical models. These findings are preliminary.
Important Notes
GHK-Cu is supplied strictly for in vitro and laboratory research purposes. All information presented is based on preclinical animal studies and in vitro data. These findings have not been replicated in human clinical trials and should not be interpreted as evidence of efficacy in humans. This content does not constitute medical advice and is not intended to inform any therapeutic or clinical decision.