Skin Care Peptide Innovation: GHK Cu Cellgenic Copper Peptides vs Retinol: Do You Need Both? Nubeean Noosa I've finally hit the copper uglies phase and I'm okay with it because my skin looks and feels phenomenal. If you're thinking about trying this is the one you need. #ghkcu #wellness #peptalk # 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