GHK Copper Peptides for Skin and Hair Defy Medical Injectable GHK Cu: Beginner's Guide to Copper Peptide Food Derived TripeptideCopper Self Healing Hydrogel for Infected Wound Healing Biomaterials Research PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction 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