What Is GHK Cu Copper Peptide? How It Works + Real User Results 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 Compounded Hair Restore Lite Scalp Solution Empower PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction