Adding an illuminated mirror to your bathroom can be a great idea, especially if you experience trouble shaving those hard-to-reach areas or spend lots of time applying makeup. That said, you'll need to take the following steps to ensure that your illuminated bathroom mirror does its job as effectively as possible. 1. Get All Angles Covered Probably the most important thing to do when you're looking for an illuminated bathroom mirror is to make sure that it is illuminated along all sides.