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$ 29.96 Min. order: 1 piece ★★★★★ 4.3 (172 reviews) Sold : Login>>
6 health benefits of glutathione US$ 20.16 Min. order: 1 piece ★★★★★ 4.0 (177 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 (16 reviews) Sold : Login>>
L- Glutathione vs Glutathione: A Detailed Distinction US$ 20.74 Min. order: 1 piece ★★★★★ 4.2 (244 reviews) Sold : Login>>