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 Ghk Cu Etsy How to Use GHK Cu Repairing Serum SumaNurica Amazon.com: GHK Cu Copper Peptide Supplement, 120mcg High Purity Supplement for Skin & Hair, Enteric Coated for Maximum Absorption, Vegan & Gluten Free (60 Count) : Health & Household GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health
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