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 GHK Cu Peptides Serum, Copper Peptides Serum for Face Tightening, Repairing, Collagen Boosting with Hyaluronic Acid Fragrance Free TikTok Shop GHK cu 3% Serum Copper Peptide GHK Cu Peptide Serum 30 ml, Copper Peptide Serum with Hyaluronic Acid for Tightening, Collagen Boosting Meet your skin's new obsession: GHK Cu Peptide Serum Now available for $80 This powerhouse copper peptide serum is designed to help support healthier, stronger, more radiant skin. Benefits