In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed This peptide reverses aging, And its been hiding in plain sight for decades., GHK Cu (Copper Peptide) is one of the most researched anti aging ingredients out there., Heres what it does:, 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