Trefor Evans, Ph. D.
Director of Research and Institute Fellow at TRI-Princeton, Princeton, New Jersey, USA.

Dr. Trefor Evans has worked in the hair care industry for almost 30 years. The first half of his career was spent as a scientist and manager in the product development labs of large consumer good companies (Helene Curtis, Unilever). He then served for five years as Director of Measurement Services at TRI-Princeton, where he now holds the titles Director of Research and Institute Fellow. He is also an Adjunct Associate Professor at the University of Cincinnati, a regular Columnist for Cosmetics & Toiletries magazine and Technical Editor for the Journal of Cosmetic Science.

Dr. Evans is highly active in the hair care industry through many working relationships with companies of all shape and size. He is a regular presenter at International Hair Conferences and has been an invited speaker at many technical meetings and symposia. He has been Chairman for the past three iterations of the International Conference on Applied Hair Science.

He has published numerous articles in trade magazines and the scientific literature and is co-author and co-editor of the book “Practical Modern Hair Science”. He holds seven patents in the area of hair care and his research work has been awarded by the Society of Cosmetic Chemists on three separate occasions.

Dr Evans regularly teaches and facilitates training classes on the topics of hair science and hair product claims which have been held in the US, Europe and Asia. He also teaches a customizable 1-man, 1-day course that has been conducted on-site at numerous client companies. He guest lectures on Hair Science and the Hair Care Industry for a variety of academic cosmetic programs and has instructed at educational events organized by the Society of Cosmetic Chemists.

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