GHK Cu for Skin: SIGNAL's Guide to Rejuvenation GHK Cu Injectable Team Wellcore Experiencing itching & burning from your GHK CU peptide injections? Try these to hacks: 1. Use a longer syringe to penetrate deeper into the fat cells. 2. Dilute the copper. Here I 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 NL GHK Cu (TETRAPEPTIDE + CU) Synthagen Synthagen PL