Ralph M. Trueb is a Professor of Dermatology. He received his MD and Swiss Board Certification for Dermatology and Venereology as well as for Allergology and Clinical Immunology from the University of Zurich, Switzerland. In 1994-5 he spent a year at the University of Texas Southwestern Medical Center, Dallas, with Rick Sontheimer and at the Howard Hughes Medical Institute, Dallas, with Bruce Beutler to complete his Fellowship in Immunodermatology. After 20 years' tenure at the Department of Dermatology, University Hospital of Zurich, where he set up and was head of the Hair Consultation Clinic, in 2010 he established his private Center for Dermatology and Hair Diseases in Zurich-Wallisellen. He is a past President of the European Hair Research Society (2008-11) and founding President of the Swiss Skin and Hair Foundation (2011). His clinical research interests focus on hair loss in women, inflammatory phenomena, hair aging and anti-aging, and patient expectation management. He is the author of 165 peer-reviewed scientific publications, and author or editor of five textbooks on hair.