In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend What are the potential adverse effects of using GHK Cu (Glycyl Histidyl Lysine Copper) topical peptides for wound healing? Ever heard of GHK Cu peptide? It's a naturally occurring copper peptide that helps repair tissue, stimulate collagen, and support skin healing. When used in injectable form, it works at a deeper level GHK Cu Injectable Team Wellcore GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy