GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Welltech GHK cu Performance Support Elite Supps Copper Peptides GHK Cu Beef Tallow for Skin Blue Balm Manuka Honey Face and Body Moisturizer for Mature Dry & Sensitive Skin AliExpress 66 What is GHK Cu and how does it work on the skin? Doaa Mansour posted on the topic LinkedIn GHK Cu Copper Peptide Skin Care: Anti Aging Benefits 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