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$ 23.53 Min. order: 1 piece ★★★★★ 5.0 (287 reviews) Sold : Login>>
Cymbiotika Liposomal Glutathione US$ 22.74 Min. order: 1 piece ★★★★★ 4.0 (148 reviews) Sold : Login>>