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 ★★★★★ 4.1 (190 reviews) Sold : Login>>
GHK-Cu Copper Peptide Face Tonic (30 mL) | Reduces Appearance of Fine Lines US$ 24.06 Min. order: 1 piece ★★★★★ 4.7 (163 reviews) Sold : Login>>
GHK-CU for Sale | Tripeptide-1 | 3rd-Party Tested US$ 28.18 Min. order: 1 piece ★★★★★ 4.9 (201 reviews) Sold : Login>>
Topical GHK-cu with Hyaluronic acid : r/DIYaesthetics US$ 29.04 Min. order: 1 piece ★★★★★ 4.0 (54 reviews) Sold : Login>>
Top 10 Foods High In Glutamine | Food & Drink US$ 24.88 Min. order: 1 piece ★★★★★ 5.0 (162 reviews) Sold : Login>>
GHK Cu Peptide Serum – Copper Peptide Serum for Tightening, Collagen Boosting & Hydrating – Topical GHK-Cu with Hyaluronic Acid US$ 27.68 Min. order: 1 piece ★★★★★ 4.8 (256 reviews) Sold : Login>>