The majority of American women say that “a bad hair day would make them feel less confident than on a good hair day,”  according to results of a new study by L'Oreal. In fact, 77% of women agree with that statement. As a result of the survey findings, the company has launched the L'Oreal Paris Advanced Haircare #POWERON campaign, a multi-channel women's empowerment initiative that includes social media conversations across platforms, in-person events from coast to c...