Hair loss, both the more medical forms and more conventional forms, affects many millions of people in the US and across the world. Current treatments include "accidental" drug therapies and hair restoration surgery which moves hair, but does not result in a net gain of hair. In this video, Angela M. Christiano, PhD, Professor of Dermatology and Genetics, Columbia University, discusses hair-follicle neogenesis using dermal papillae cells to revolutionize hair-growth therapy. Read more about Dr. Christiano's research here.