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 Wellness peptide craze: why people are injecting drugs 'not for human consumption' BBC News Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit STOP the GHK Cu itch!, The secret to a painless GHK Cu injection? The 15 Minute Rule. , Injecting cold, acidic peptides causes mechanical and chemical stress on your cells. , To lower the sting:,