Practical Modern Hair Science 530 Comprehensive Cancer Center at the University of North Carolina, Chapel Hill, where he studied gene expression and its relationship to treatment of breast cancer, discovered and analyzed a novel human proto-oncogene, c-mer and studied reactive oxygen species generation and prevention thereof in orthotopic liver transplantation. Prior to joining P&G, Dawson was a clinical medical genetics fellow in the Pediatrics Department of the Duke University Medical Center, where he studied human metabolic disease, the identification of genes causing human disease, and collaborated in the identification and development of a novel drug to treat Type 2 glycogen storage disease (Pompe Disease). Dawson won the John Smale Award as P&G’s top technologist in 2002 and was appointed to the faculty of Miami (Ohio) University’s Department of Botany as an adjunct professor in 2004. Yvonne M. DeAngelis is a senior researcher in beauty technology for The Procter & Gamble Company. DeAngelis earned an Associate’s in Veterinary Technology from University of Cincinnati’s Raymond Walters Technical College in 1994 and a Bachelor in Natural Science from the University of Cincinnati in 2006. In her more that 13 years with P&G Beauty, she has been an author on more than 10 original articles, book chapters, papers, and other scientific communications. Her research focus is development of methods to measure fundamental biology and impact of material intervention of the scalp, hair follicle, fungal microflora, host/ commensal interactions, and dandruff. Prior to joining P&G, DeAngelis was a registered veterinary technician for the Emergency Veterinary Clinic of Cincinnati. Trefor Evans, PhD, has spent more than 20 years in the hair care industry, working primarily in the product development labs of Helene Curtis and Unilever. He is presently Director of Measurement Services at TRI-Princeton. During his time in the consumer goods industry, he supported the development, launch, and maintenance of many international hair care products and