GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) Ghk Cu Peptide Serum for Face, Copper Peptides Anti Aging Serum Firming, Wrink Not all copper peptide serums are formulated the same Before you buy one, make sure you're actually getting pure GHK Cu at the right concentration not just a diluted blend. We spent Copper Peptide Regenerating Serum for Glowing Skin and Hair Serum Copper Peptide for skin firming and repair. scentsofman GHK Cu Blue Copper Peptide + Betaine Serum Wonderlini exquisite skincare