GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? My experience with the copper uglies! , #peptides #peptidesforwomen #ghkcu #education #glowup Some people notice their skin looks worse before it improves with GHK Cu. This temporary phase is often called the copper uglies., #skincare, #ghkcu, #skinhealth, #longevity, #peptides PSA] Finally, a Dr. explains the mechanism behind the "copper uglies" : r SkincareAddiction