In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection Molecular structure of the tripeptide GHK Cu. In solution lysine Download Scientific Diagram