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A GHK Cu face serum appears blue because the active ingredient, GHK Cu ( copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue 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 Purple Clinical Hydrocolloid Pimple Patches with GHK Cu Copper Peptide Invisible Blemish Covers for Acne Treatment : Beauty & Personal Care Buy GHK Cu 100mg Australia Bulk Copper Peptide Peptides Direct Australia

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