Copper Peptides GHK Cu Beef Tallow for Skin: Blue Balm with Methylene Blue, Manuka Honey & Vitamin E Natural Face and Body Moisturizer for Mature, Dry & Delicate Skin 2oz 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 ReMed HydraPen (GHK Cu) Blue Copper Peptide Serum (2x5 ml) FillerDepot Buy GHK Cu Blue Copper Peptide CAS 49557 75 7 Cosmetic Use High Purity Cosmetics Grade from Hebei Runxuchen trading Co., LTD ECHEMI HealthyDerm Copper Peptides GHK Cu Beef Tallow for Skin: Blue Balm with Methylene Blue, Manuka Honey GHK Cu 50mg Copper Peptide