Amazon.com : GHK-Cu Copper Peptide Powder, CAS 49557-75-7, Purity 99+%, 1 Gram : Health & Household US$ 29.15 Min. order: 1 piece ★★★★★ 5.0 (100 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$ 20.81 Min. order: 1 piece ★★★★★ 4.0 (230 reviews) Sold : Login>>
GHK-Cu Raw Powder (Topical) Copper-Tripeptide 1g 5g Cosmetic Grade US Seller US$ 22.45 Min. order: 1 piece ★★★★★ 4.0 (248 reviews) Sold : Login>>
USA Copper Peptide GHK-Cu Powder, DIY Blue Copper for Making the Best Face Cream US$ 21.12 Min. order: 1 piece ★★★★★ 4.5 (143 reviews) Sold : Login>>
Buy GHK-Cu Copper Peptides (100MG) US$ 21.36 Min. order: 1 piece ★★★★★ 5.0 (73 reviews) Sold : Login>>