Copper Peptide GHK Cu Copper Peptide A novel cell penetrating peptide supports hair follicle growth through anti inflammatory and growth factorassociated mechanisms in preclinical models BMC Biotechnology Springer Nature Link Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience Copper peptides (GHK Cu) have been studied for decades for their role in tissue repair and that same biology applies to hair. Research shows GHK Cu may help strengthen existing hair follicles, reduce AHK Cu Peptide And Epithelial Tissues Biotech Peptides