Blue Copper Ghk cu Peptide Manufacturers Suppliers Factory Salispharm GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support GHK Cu 50mg 5 Vials Us Chem Labs GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling A GHK Cu face serum appears blue because the active ingredient, GHK Cu (copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue