Best balayage and highlights. Award winning hairstylist. Located in Flatiron, A GRAND UNION hair salon offers sophisticated hair services including haircut, blowout, colors including balayage and highlights, Japanese straightening, hair treatments and head spa (special scalp massage). Our proud hairstylists are highly experienced, creative, motivated and client-centric with passion. We do not compromise on realizing what our clients’ demand as it is our highest priority out of all things.