Your skin knows GHK Cu. Your body makes it naturally, then makes less of it with age. We concentrated it. Three formulas. One peptide. Each paired with a single bioactive, chosen for a Copper Peptide (GHK Cu) 2% Recovery Serum Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Skin Perfection GHK Cu Copper Peptide Serum Booster, 1 Percent Blue Liquid For Face, Neck, Body, Hair, And Scalp, 0.5 oz Walmart.com