GHK Cu Peptide Skin Cream Levers.Health Blue Booster Copper Peptide GHK Cu DermaFusion Aesthetics Ltd Skin Perfection GHK Cu Copper Peptide Serum Booster, 1 Percent Blue Liquid For Face, Neck, Body, Hair, And Scalp, 0.5 oz Walmart.com What are Glutathione Benefits? Uses & Side effects Explained 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