GHK Cu 100mg Research Compound Australia GHK Cu 50 mg Copper Peptide Research Grade PRG Copper peptide GHK Cu Tripeptide Proteasome Bortezomib, angle, white png PNGEgg GHK Cu: Regenerative Signaling and Molecular Reprogramming Research English Version Peridico Digital Centroamericano y del Caribe 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