GHK Cu Peptide Before and After Results 50mg GHK Cu Vial Blue Copper Peptide Face Serum Age Aging Moisturizing Repairing for Skin Care Serum Facial Care Kit d 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 Repairing Serum 30ml SumaNurica Biossance Squalane + Copper Peptide Rapid Plumping Serum