Dr. George Cotsarelis is the Milton B. Hartzell Professor and Chair of the Department of Dermatology at the University of Pennsylvania Perelman School of Medicine. His research focuses on hair follicle stem cells, alopecia, and skin regeneration. He has published numerous high-impact research manuscripts, served on an array of grant review panels, and presented numerous invited lectures throughout the world. Dr. Cotsarelis has held research support from the National Institutes of Health for over twenty-five years. His patients with hair loss inspire his research, and Dr. Cotsarelis is a world renowned clinical and research expert in alopecia. He has received numerous awards, including the SID's Montagna lecturer and Kligman/Frost award, the AAD's Marion Sulzberger Award, and the Mancunian Skin Club's Lifetime Achievement Award.