Copper peptide GHK Cu Wikipedia GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Fraley Whats the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why its used in anti aging skincare What results GHK Cu before and after : r Biohackers