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 Peptide Injection Treatments Benefits & Uses Hubmed Why I Use GHK Cu: The Copper Peptide That Talks to Your Cells Peptide Injection Site Reactions: What's Normal and Prevention Tips GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Copper Peptide: The Ultimate Peptide For Longevity