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$ 26.58 Min. order: 1 piece ★★★★★ 4.7 (183 reviews) Sold : Login>>
Copper Peptide Ghk Cu 99% Skin Care Ghk-Cu 50mg 100mg vials Cosmetic Ingredient US$ 25.91 Min. order: 1 piece ★★★★★ 4.8 (252 reviews) Sold : Login>>
Two Weeks on GHK-CU - by Rory Uphold US$ 28.85 Min. order: 1 piece ★★★★★ 4.9 (274 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$ 25.44 Min. order: 1 piece ★★★★★ 4.2 (211 reviews) Sold : Login>>
GHK-CU 50mg Vial | Copper Peptide US$ 25.82 Min. order: 1 piece ★★★★★ 4.7 (173 reviews) Sold : Login>>