Skin Perfection GHK Cu Copper Peptide Serum Booster, 1 Percent Blue Liquid For Face, Neck, Body, Hair, And Scalp, 0.5 oz Walmart.com Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum A few years ago, barely anyone was talking about copper peptides now GHK Cu and AHK Cu are everywhere in skincare, biohacking, and longevity conversations. But did you know there are copper peptides Struggling with hair thinning or shedding? Meet GHK Cu, the topical peptide everyone is talking about and NO, it's not an injection! This powerful serum helps: Reduce shedding Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz