Buy High Purity GHK Cu Blue Powder Copper Peptide CAS 49557 75 7 89030 95 5 Cosmetics Grade from Hangzhou Hyper Chemicals Limited ECHEMI Ward What make blue? . The blue color of GHK Cu is due to the copper ion mineral bound with the peptide. The binding occurs through the donation of electrons That deep blue color? , Thats how you know its real copper peptide., DBH Copper Peptide isnt diluted, watered down, or toned back. That rich blue hue signals a high, active concentrationthe kind 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 (3.4 oz) : Beauty & Personal Copper Peptide GHK Cu & Hyaluronic Acid Body Lotion Skin Firming 10 fl oz