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$ 20.77 Min. order: 1 piece ★★★★★ 5.0 (268 reviews) Sold : Login>>
How to Mix GHK-Cu Powder? - Knowledge US$ 21.64 Min. order: 1 piece ★★★★★ 4.2 (248 reviews) Sold : Login>>
How to Mix GHK-Cu Powder? - Knowledge US$ 20.83 Min. order: 1 piece ★★★★★ 5.0 (204 reviews) Sold : Login>>