What Is GHK Cu Peptide? Ever heard of the "Copper Uglies"? It sounds scary, but it's actually a sign of over enthusiasm! Copper peptides are incredible for skin remodeling, but they work on a "break down and Copper Peptides vs Retinol: Do You Need Both? Nubeean Noosa Officially started my "copper uglies" phase of GHK CU, phase is NOT for the weak. No pin pain, but my skin is purging and I hate it 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