This chapter from the 2004 book of the same name describes the development of eye-enhancement cosmetics. "An intense gaze is one of the most effective ways a woman can broadcast her interest in a man. (Believe it or not, scientists have actually quantified this.)... But how is it that eye makeup, particularly mascara, became a standard implement in America???s cosmetic toolbox?" Learn about how early movie stars contributed to this trend. From WNYC Radio.