Recent post responses making me question if my reactions are normal. Worried! : r Peptides Why I Use GHK Cu: The Copper Peptide That Talks to Your Cells How to Mitigate GHKCU Burn and Stinging Effectively The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget 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