The global professional nail care market, driven by two key areas of innovation—the products themselves and their removal techniques—posts healthy growth of almost 6% in 2015, according to Kline’s new report. Long-wear nail polish (also called hybrid), which combines the benefits of gel and regular nail polish, has been the biggest innovation since the introduction of gel-polish. The hybrid category posts a triple-digit increase in 2015, finds Kline’s just-published report Professional Nail Care...