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 US$ 20.20 Min. order: 1 piece ★★★★★ 4.8 (162 reviews) Sold : Login>>
Blue Copper Peptide (GHK-Cu) Guide: Anti-Aging Science, Formulation & OEM US$ 27.11 Min. order: 1 piece ★★★★★ 4.7 (144 reviews) Sold : Login>>
The mechanism of action of N-acetylcysteine (NAC): The emerging role of H2S and sulfane sulfur species US$ 21.39 Min. order: 1 piece ★★★★★ 4.6 (160 reviews) Sold : Login>>
GHK-Cu Peptide Benefits (And a Few Risks) Explained US$ 20.73 Min. order: 1 piece ★★★★★ 5.0 (96 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$ 22.54 Min. order: 1 piece ★★★★★ 4.6 (230 reviews) Sold : Login>>