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 How GHK Cu Strengthens Hair Follicles to Combat Hair Loss HapiPatch Cosmetic Ingredients 49557 75 7 Copper Peptide Ghk cu China Wholesale Copper Peptide Ghk cu $10 from Hebei Xunhe import and export trade Co., Ltd Globalsources.com Struggling with hair thinning or shedding? Meet GHK Cu, the topical peptide everyone is talking about and NO, it's not an injection! This powerful serum helps: Reduce shedding