50mg GHK Cu Vial Blue Copper Peptide Face Serum Age Aging Moisturizing Repairing for Skin Care Serum Facial Care Kit d GHK Cu GHK Cu Repairing Serum 30ml SumaNurica GHK Cu Peptide Before and After Results 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 Lactic Power 10 Serum + GHK VIP Serum Super Combo