It’s a pretty notorious fact that hairdressers hate box dye. The main reason for this is that box hair dye can be a little unpredictable. It can be very difficult for hairstylists to color hair that’s already been dyed at home since they can’t guarantee good results. It’s also hard to predict how home hair dye will come out when it’s applied to dyed hair, so all in all, it often gives stylists trouble. After the fact, it’s very hard to remove box hair dye, so if you want to change your look, it can be very difficult.