GHK-Cu

Overview

GHK-Cu is a small copper binding tripeptide, three amino acids joined to a single copper ion, first identified in human plasma in 1973. Its levels in the body are highest in youth and decline steadily with age, which is part of why it draws so much interest in skin and longevity research. It carries roughly four decades of published study behind it, an unusually deep record for a peptide, much of it focused on skin, wound repair, and connective tissue. Because copper can oxidize and degrade other peptides, GHK-Cu is kept and handled separately from the rest of the catalog. It anchors the skin and connective tissue category and appears in The Glow and The KLOW blends.

How it works

GHK-Cu plays a dual role in research, acting both as a signal that tells cells to begin repair and as a carrier that delivers copper, a trace mineral the body requires to build collagen and elastin. Studies describe it stimulating the synthesis of collagen, elastin, proteoglycans, and glycosaminoglycans, the structural materials that give skin its firmness and elasticity. At the same time it helps regulate the enzymes known as metalloproteinases, which break tissue down, so research frames it as helping balance the building up and breaking down sides of tissue turnover. It also supports the growth of new blood vessels and has reported antioxidant and anti inflammatory activity. More recent work describes a remarkably broad influence on gene expression, with one analysis reporting effects across more than a thousand genes, which has reframed it as a regulator of skin renewal rather than a single purpose ingredient.

What researchers study

Studies examine GHK-Cu for collagen and elastin production, wound and scar repair, skin density and firmness, and hair follicle biology, with a meaningful share of the evidence coming from human topical skin studies rather than animal models alone. Early clinical work compared topical GHK-Cu against established skincare actives and reported increased collagen in a majority of volunteers. Other studies looked at it in the setting of laser resurfaced skin and in diabetic wound models. Its gene level activity is a newer and still developing research thread that researchers are working to fully map. Across this body of work GHK-Cu stands out for having more direct human skin data than most peptides in its category, even as the broader systemic claims remain under study.

Published references

• Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data
• Copper Peptides in Regenerative Aesthetic Dermatology

Research Use Only. Not for human or animal use.