Stuck in a hair rut?  Schwarzkopf Professional has recently introduced and relaunched products from the OSiS, BLONDME, and ESSENSITY lines.  The company, which is part of the business unit cosmetics/toiletries of the Henkel Group, Düsseldorf, is worldwide one of the leading suppliers in the hairstyling industry.  Based on the professional partnership with the hairstylists, the…