GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega GHK Copper Peptide GHK Cu Tripeptide 1 Most people think GHK Cu is just a beauty peptide. But look at this Same person. Same lighting. Real skin change. GHK Cu works by activating repair genes in the body helping with