PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction How X39 patch boosts GHK Cu for regeneration Dr. Staci Holweger posted on the topic LinkedIn 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 Peptide for Skin Rejuvenation Wittmer Rejuvenation Clinic