GHK CU 100mg 99%+ Purity, COA Verified GHK Cu 50mg Copper Peptide Research Grade Midwest Peptide In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Dr Tahera explains that the topical version of GHK Cu and how it supports skin repair and rejuvenation. This is the cream based approach. Injectables? We'll cover that next. Because understanding your options matters.