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 GHK Cu Peptide Before and After Results Amazon.com: Copper Peptide GHK Cu Beef Tallow: Grass Fed Blue Balm for Mature Skin Face and Body Moisturizer with Methylene Blue, Manuka Honey & Vitamin E Natural Skincare for Dry & Sensitive Pptido de cobre GHK GHK Cu Tripptido 1 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