Colour Bar Hair Colour Specialist is a flagship L'Oreal Professionnel Salon, that carries Kerastase Paris and Shu Uemura Art of Hair products. At Colour Bar Hair mediocrity is not accepted, located in the heart of Rockville Centre, near St. Agnes Cathedral.We are extremely educated about our industry and uphold exceptional standards for quality and superiority. Our goal is to provide a world-class salon experience accessible to anyone.