GHK Cu: The Science Behind the Copper Peptide Transforming Skin Repair and Regeneration Meto blog 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 Copper Peptide Research Compound Drexa Labs If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections