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 Natural Copper Peptide Serum Booster BLUE Copper Peptide GHK CU Serum with Hyaluronic Acid Anti Wrinkle Assortment eBay BLUE Copper Peptide GHK CU Serum with Hyaluronic Acid Anti Wrinkle Assortment eBay One of my patients has shared this picture with me as she felt it was odd that this peptide had this very vivid blue colour, while her other peptides had a clear AHK CU + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan