Samuel St. John PhD

Samuel St. John graduated in 2003 with a degree in Chemical Engineering and went to work at Procter & Gamble following two internships there. 

In 2008, he went back to graduate school at the University of Cincinnati where he graduated in 2013 with a PhD in Chemical Engineering. Following his PhD work, Sam was a post-doctoral researcher at the University of Tennessee and focused on electrochemical oxidation reactions and inorganic synthesis of nano-structures characterized using high-energy particle scattering.

Samuel rejoined P&G Oral Care R&D in 2016 to continue his work on understanding the etiology of oral diseases. He is interested in the invention and development of new-to-the-world oral care ingredients for the prevention and treatment of dental caries, erosion, and tartar formation, as well as breakthrough products for the treatment of gingivitis and plaque.  

Dr. St. John has co-authored 21 peer-reviewed publications, applied for over 10 patents, and given over 30 conference talks.