GHK Cu might be trending, but it's not new. Before you inject yourself with this viral peptide, consider this. This copper peptide has been studied for years in skin repair and collagen signalling, Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu Wellness peptide craze: why people are injecting drugs 'not for human consumption' In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega