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 First time getting GHK Cu. Does this look ok? Not sure if this is how its supposed to look. : r PeptidePathways 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 The Complete Peptide Guide: Reconstitution, Injection & Storage Extension Health GHK CU COPPER PEPTIDES TABLETS The Beauty Doctrine GHK CU (Super Slowed) Zurvyy, pvlsxr & AETHRA: Song Lyrics, Music Videos & Concerts