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 Theoretical study of copper binding to GHK peptide ScienceDirect GHK Cu (copper peptide) used topically is one of the most well studied skin repair peptides. Here's how it helps the skin, in practical terms: 1. Boosts collagen & elastin GHK Cu signals your skin Best Copper Peptide Serum The top 4 options of 2026