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$ 29.41 Min. order: 1 piece ★★★★★ 4.8 (213 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$ 20.20 Min. order: 1 piece ★★★★★ 5.0 (140 reviews) Sold : Login>>
Skincare Copper Peptide GHk-Cu & Methylene Blue Global US$ 26.47 Min. order: 1 piece ★★★★★ 4.4 (130 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$ 28.17 Min. order: 1 piece ★★★★★ 4.8 (43 reviews) Sold : Login>>
China Cheapest Price Cosmetic Grade Blue Peptide Powder Copper Peptide / Ghk -Cu Powder factory and manufacturers US$ 26.20 Min. order: 1 piece ★★★★★ 4.3 (290 reviews) Sold : Login>>