GHK Cu (Copper Peptide) Provider Supervised Therapy IV Glow Bar All About GHK Cu Peptide More Than Just Cosmetic GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care 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 you're Peptides take off as a DIY treatment but is that a good idea? : NPR