GHK Cu Copper Peptide Skincare Bundle RegenMed Direct 50mg GHK Cu Vial Blue Copper Peptide Face Serum Age Aging Moisturizing Repairing for Skin Care Serum Facial Care Kit d GHK Cu Blue Copper Peptide + Betaine Serum Wonderlini exquisite skincare 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 Copper Peptide, Face Serum, 1 oz (30 ml)