If your GHK Cu or MOTS C injection leaves welts and burns like a hornet, it's usually not the peptide it's the technique. A few small tweaks can turn a sting into almost GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes The potential of GHK as an anti aging peptide Dou Aging Pathobiology and Therapeutics Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit