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 Co delivery of bioactive peptides by nanoliposomes for promotion of hair growth ScienceDirect Peptides for Hair Growth: promising, but not magic., Hair growth is not controlled by one single factor. It depends on the hair cycle, follicle health, blood supply, inflammation, hormones, Copper Peptide Hair Growth Mechanism: What Kinds of Hair Loss Can It Improve? Perfect Medical Overexpression of VEGF in dermal fibroblast cells accelerates the angiogenesis and wound healing function: in vitro and in vivo studies Scientific Reports