CINCINNATI--(BUSINESS WIRE)--Vidal Sassoon presents NEW Vidal Sassoon Salonist™ - a revolutionary at-home hair colour system that is inspired by Sassoon’s colour artistry and gives women the tools and techniques that will elevate their home hair colour to an art form. By incorporating an exclusive two-step technique that treats roots and lengths separately, women can now master the art of rich colour with depth and tones. Speaking with women all over the world, we found that many who colour the