N2 (N Glycyl L histidyl) L lysinato(2 )]copper 89030 95 5 wiki Buy GHK Cu Peptide 99%+ Purity GHK Cu for Research What is GHK Cu Collagen and Elastin Support Neurogan Health 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
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