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 ★★★★★ 4.5 (185 reviews) Sold : Login>>
A GHK-CU Blue Copper Peptide Serum Concentrate Ampoule Anti-Wrinkle Firming Moisturizing Elasticity Acne Treatment Skincare| Alibaba.com US$ 29.49 Min. order: 1 piece ★★★★★ 4.2 (122 reviews) Sold : Login>>
1% GHK-CU solution: is this applied directly on skin or diluted further? : r/DIYaesthetics US$ 29.03 Min. order: 1 piece ★★★★★ 4.3 (179 reviews) Sold : Login>>
Effect of N-Acetylcysteine on Sleep: Impacts of Sex and Time of Day US$ 24.75 Min. order: 1 piece ★★★★★ 4.7 (137 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 (296 reviews) Sold : Login>>
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$ 25.85 Min. order: 1 piece ★★★★★ 4.3 (95 reviews) Sold : Login>>