L'Oréal Paris Infaillible Brows 12H Definer Pencil. The cosmetics brand L’Oréal Paris has been caring for the beauty of women and men around the world for over 100 years. L’Oréal Paris and the path to perfection. The L’Oréal Group, which includes the L’Oréal Paris brand, is a global leader in the beauty industry.