GHK-Cu, a tripeptide consisting of glycine, histidine, and lysine bound to a copper ion, plays a crucial role in various physiological processes studied in peptide research. Its ability to bind copper and act as a copper transporter is of significant interest in exploring cellular repair mechanisms and the synthesis of collagen and elastin in research settings. GHK-Cu is extensively studied for its role in promoting tissue regeneration and understanding how it may influence skin elasticity, firmness, and other biological functions.

The lyophilized GHK-Cu in the vial appears blue due to the copper ions present in the peptide, and once reconstituted for research, it displays a cobalt blue color, which is typical for this compound in its active form.