In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Glutathione GHK Gu Peptide Patch Medical Imaging and Therapeutics What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health Epigenetic mechanisms activated by GHK Cu increase skin collagen density in clinical trial EurekAlert!