It was a dazzling evening with our friends at Wella Professionals, at the 2015 North American TrendVision competition in Las Vegas. Onstage talent included Darren Ambrose, Michael Polsinelli, Shay Dempsey, Mark Hayes, Traci Sakosits, and Richie Rivera, plus Whitney Port, the new Wella Brand Ambassador. The impressive panel of judges included Andy LeCompte, Eden Sassoon, Oscar Blandi, and Frank Morasco. Most of all, though, it was about the skills of the competitors from the U.S. and Canada, who brought it for the live competition in hopes…