Hair care company Joico helped all 12 American Idol finalists hit the stage with great hair. Joico consulted with Idol’s “hair honcho” Dean Banowitz, who heads up the hairstyling department for the show. In this role, Mr. Banowitz oversees the coifs of the finalists, plus tends to the camera-ready style of emcee Ryan Seacrest and judges Randy Jackson and Simon Cowell. Mr. Banowitz submitted a hair profile of each finalist, along with suggested Joico products to enhance each of their looks....