Not all copper peptide serums are created equal And this is where a lot of people get confused. You'll see copper peptides on the label and expect amazing results but the Cellular Glow Copper Peptide GHK Cu Serum for Face AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan Health BEAUTY PEPTIDE DETAILS + TIPS + why this peptide is everywhere right now, GHK Cu (copper tripeptide) goes beyond surface level beautyits naturally found in the body but declines with age. Known