China Copper Peptide(GHK Cu) CAS:89030 95 5 Manufacturers Free Sample Alfa Chemical 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 Halogen driven modulation of coordination geometry and electronic properties in copper complexes: Insights from comprehensive structural and computational studies ScienceDirect GHK Cu 100mg Research Compound Australia GHK Cu: Regenerative Signaling and Molecular Reprogramming Research English Version Peridico Digital Centroamericano y del Caribe