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 I didn't expect this to be the thing that made me stop and say okay wow. I added GHK Cu (a copper peptide) into my routine for overall skin support. What I've personally 5 GHK Cu Peptide Injection Secrets 2026 Compounding Pharmacy in Tampa Salhab Pharmacy GHK Cu Peptide: What It Does for Body Composition and Metabolic Health