GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Copper peptides like GHK Cu work by sending signals to your skin to repair, regenerate, and produce collagen., Its not about instant results, its about improving how your skin functions over time., GHK Cu G Lab Peptides