The smoothness is important because it creates a shine that allows the light to bounce off the hair. We wanted the light to reflect off the hair, says Mena. What keeps me up at night is thinking about whom I would take. An Olympian A researcher at Google longevity center, Calico Labs Gwyneth But the glowy Amanda Chantal Bacon, founder and CEO of Moon Juice, usually tops my list. There is a type...