Project of Wound Healing Peptide GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides Buy GHK Cu Peptide 99%+ Purity GHK Cu for Research GHK Biotin Peptide for Hair Growth: The Science Behind Scalp Renewal I'm Fabulous Cosmetics