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 Copper Peptide GHK Cu Tripeptide 1 GHK Cu Copper Peptide Supplement, Promotes Skin Repair, Reduces Wrinkles CTDE PARIVAR GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu Copper Peptide Injections: Advanced Skin Rejuvenation