70-year-old Bettencourt-Meyers holds about 33% stake and is a board member at L'Oreal. She is the 11th richest person in the world, two positions above India's Mukesh Ambani. She owns mass-market brands like L'Oreal, Maybelline, Essie, and Garnier, as well as high-end beauty companies like Urban Decay, Lancôme, and Kiehl's. Here's everything you must know about her.