Amazon.com : AzulBotanicals Copper Peptide GHk Cu & Methylene Blue Infused Whipped Grass Fed Tallow Balm, Fine lines, Wrinkles, Eczema, Acne, Full body Moisturizer, For All Skin (1.7 oz) : Beauty & Personal 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 Cu ion at the center What Makes GHK Cu Copper Peptides Blue? GHK CU Color Vitali Skincare #creatorsearchinsights ghk cu peptide before and after Copper Peptide serum Copper Peptide peptide serum GHKGHKCUHKCU Peptide GHKC you Copper Peptide anti aging deep wrinkle treatment Copper peptides