Close up of Blue Copper Peptides GHK Cu in Pipette. Beauty serum for anti aging beauty routine Stock Photo Alamy GHK Cu Doesn't Destroy Peptides Here's What Really Happens YouTube New research suggests a blood based aging marker may not only predict lifespan, but also respond to intervention. Link in bio. #longevity #geroscience #glycans #agingmarker #biomarkers Copper Peptides: Benefits, Results & Skincare Guide Glimmer Goddess 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