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 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 Copper Peptide GHK Cu Copper Peptide GHK Cu 50 mg Copper Peptide Research Grade PRG Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect