Bathroom mirrors serve a few functions in your bathroom. They reflect not only light but your face back to you so you can apply makeup or shave ready for the days slog ahead. The mirrors provide subtle lighting for the bathroom. I would always suggest you have the mirror wired separately so you can just have just the mirror light on if you are relaxing in your bath or do not want too bright a light at night. Most are fitted with de misting pads which clear a section of the mirror so when you get out of the bath or the shower you have a steam free section to get to grips with the tough beard or eyelashes. Some even go so far as to have a charging socket on the side so you can charge your tooth brush or razor. Most have LED lights installed so are very energy efficient.