In this episode, I had the opportunity to speak with Dr. Trefor Evans, Institute Fellow, Director of Research at TRI Princeton. He’s worked in the hair care industry for almost 25 years spending a good portion of his time as a scientists in development labs - he’s highly active in his industry and today, travels internationally to give presentations about hair science, has countless publications, and is a member of the Expert Reviewing Panel for the Journal of Cosmetic Science. This conversation was information packed. We talked about the structure of hair, the progression to damaged hair, how cosmetic products can make a difference, and lots more. Enjoy!