Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram GHK Cu Troche Strive Pharmacy 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 PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction