NL GHK Cu protection against heart, eye, and brain diseases Synthagen PL GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link GHK Cu is a naturally occurring copper peptide found in the body that plays a key role in skin regeneration, healing, and overall skin health. As we age, levels declinewhich is where topical Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram