Is the Founder and President of Stephens & Associates. Dr. Stephens
has a Ph.D. in immunology from Iowa State University and an M.S. from
Southern Illinois University. Dr. Stephens has over 25 years of experience
in product safety evaluation and toxicology. He was Director of Product
Safety and Claims Substantiation Worldwide at Mary Kay Cosmetics and
served as Divisional Toxicologist at The Procter & Gamble Company.
He has published over 80 scientific articles, technical posters, and book
chapters in medicine and science. Dr. Stephens serves on the Board of
Associate Editors for the Journal of Toxicology - Cutaneous and Ocular
Toxicology, and is a member of the American Academy of Dermatology and
the Society of Cosmetic Chemists. In 2000, he was elected to the "Leaders
Society" of the Dermatology Foundation.
Serves as Senior Vice-President of Operations for Stephens & Associates.
Dr. Rizer received his Ph.D. from New York University, his M.A. from
Hunter College, CUNY, and his B.S. from the University of Maine. Dr.
Rizer has over 30 years of dermatological and skin care product development
and research experience. He directed skin care product development
and new skin and hair technology at S.C. Johnson & Son, Inc. and
directed skin, hair, and endocrine research at the Orentreich Medical
Group and Foundation in New York. He served on the faculties of the
Department of Dermatology at the Medical College of Wisconsin and the
Division of Science at the University of Wisconsin. Dr. Rizer has published
numerous articles and book chapters on skin biochemistry, the biophysical
properties of the skin, claims substantiation, hair and acne research,
and the biology of aging skin. Dr. Rizer is a member of the American
Academy of Dermatology. In 1998, he was co-recipient of the Shaw Mudge & Company
Award for outstanding scientific research in ethnic skin.
Serves as Vice-President of Operations for Stephens & Associates.
Dr Sigler received her Ph.D. from University of Texas Southwestern
Medical School in Dallas and her B.S. from Texas A&M University.
She has been with Stephens' since 1995 and has clinical trial experience
in the areas of women's health, ethnic skin, sensory testing,
wound healing, acnegenicity, and photoaging. Dr. Sigler has published
numerous articles on skin biochemistry, clinical and biophysical
properties of the skin, skin sensitivity in ethnic skin and has authored chapters on clinical claims substantiation.
Dr. Sigler is a member of the American Academy of Dermatology
and the Drug Information Association.
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