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 Copper Peptide Cosmetic Grade Copper Tripeptide 1 Buy GHK Cu Peptide 99%+ Purity GHK Cu for Research Two Weeks on GHK CU by Rory Uphold The Ladies Room Close up of Blue Copper Peptides GHK Cu in Pipette. Beauty serum for anti aging beauty routine Stock Photo Alamy
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glutathione benefits and side effects 1% GHK-CU solution: is this applied directly on skin or diluted further? : r/DIYaesthetics