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 GHK Cu and Reproductive Health: Mechanisms, Fertility Benefits GHK Cu Side Effects, Complications, and Risk Profile GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B