Dr. Ellison received a Ph.D. degree in Pharmacology and Toxicology from the School of Medicine and Biomedical Sciences at The State University of New York at Buffalo. After graduation, he joined The Procter & Gamble Company as a Toxicologist in the Global Product Stewardship organization. Currently, Dr. Ellison is a Principal Scientist in the Central Product Safety division where he leads several research projects as well as the human safety program for multiple technologies in P&G’s global cosmetic businesses. He has expertise in pharmacokinetics, i.e., Absorption, Distribution, Metabolism and Excretion (ADME), and uses this knowledge to develop innovative approaches using physiologically-based pharmacokinetic (PBPK) models to predict systemic exposure and refine/advance the quantitative risk assessment for consumer products.