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Buy GHK-Cu | Exceptional 99%+ Purity US$ 25.65 Min. order: 1 piece ★★★★★ 4.2 (186 reviews) Sold : Login>>
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 Cu²⁺ ion at the center US$ 26.58 Min. order: 1 piece ★★★★★ 4.3 (225 reviews) Sold : Login>>
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