Hi everyone! I have been dying my hair with Wella level 9 very light ash violet blonde plus level 30 developer for years, based on the recommendation of a stylist many years ago. I am currently at a location far from a Sally's and was considering just getting a box from the drugstore. My hairstylist always tells me that the drugstore color is not as good, is this really true? What is the difference in a L'Oreal Excellence color sold at Sally's or in the drugstore, for example? Better pigment, less damage? I have always been curious. Also, does anyone know what level of developer is the drugstore boxes? Is it 20 or 30? Thanks!!