GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Copper Peptide Skin & Healing Beverly Hills GHK Cu: The Peptide That Rebuilds, Repairs & Rejuvenates Boston Health Longevity Mitigating GHK Cu Injection Pain: Tips and Tricks Gabriel Alizaidy, MD, MS posted on the topic LinkedIn Your copper peptide product should be this exact blue. If it isn't, you already have your answer. GHK Cu is blue because of coordination chemistry, not dye. The Cu ion at the center