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$ 29.96 Min. order: 1 piece ★★★★★ 4.7 (150 reviews) Sold : Login>>
L-Glutathione 250mg - 90 Vegan Capsules for Skin & Liver Detox | High Dose Laboratory Tested | Buy Now with Express International Delivery US$ 25.48 Min. order: 1 piece ★★★★★ 4.5 (240 reviews) Sold : Login>>
Neurogan Copper Peptide Hair Scalp Serum for Fuller Softer Shinier Hair US$ 27.29 Min. order: 1 piece ★★★★★ 5.0 (71 reviews) Sold : Login>>
6 health benefits of glutathione US$ 20.16 Min. order: 1 piece ★★★★★ 4.7 (202 reviews) Sold : Login>>
Top Foods that Increase Glutathione Levels US$ 23.47 Min. order: 1 piece ★★★★★ 4.4 (105 reviews) Sold : Login>>
L- Glutathione vs Glutathione: A Detailed Distinction US$ 20.74 Min. order: 1 piece ★★★★★ 4.4 (170 reviews) Sold : Login>>