Best in 7 days Copper Peptide Serum with 1% GHK-Cu peptide, Argireline and Matrixyl 3 – Dr. Brenner Labs US$ 22.25 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$ 24.24 Min. order: 1 piece ★★★★★ 4.7 (17 reviews) Sold : Login>>
10GS: HUMAN GLUTATHIONE S-TRANSFERASE P1-1, COMPLEX WITH TER117 US$ 26.98 Min. order: 1 piece ★★★★★ 4.5 (87 reviews) Sold : Login>>
Human Glutathione S Transferase Alpha 1 (GSTa1) ELISA Kit, Cat#EKL57716 US$ 28.59 Min. order: 1 piece ★★★★★ 4.2 (228 reviews) Sold : Login>>
Glutathione diethyl ester TFA | Glutathione Delivery Agent US$ 27.60 Min. order: 1 piece ★★★★★ 4.9 (261 reviews) Sold : Login>>