Bathrooms are characterised, in general, as more restricted areas - they are not always the big, airey rooms we may hope for and, often, do not have natural light. As such, lighting becomes more important than usual. Lighting must be more intense than in the rest of our house, as compared with the needs of the room.
All the bathrooms, be it small, medium or larger ones, requires general lighting, which provides illumination to the entire room without any shadows and provides proper lighting to the floor of the bathroom. This type of lighting is often derived from the recessed ceiling bathroom fixtures that not only provide the light but also creates lesser glares when compared to the wall hanging fixtures. Natural light that is let through the windows which are made of frosted glass or glass blocks will also provide ambient lighting to the bathroom as well as privacy.
They allow light to be evenly reflected across your face removing any shadows that may deceive you or make it hard for you to groom yourself properly in a timely fashion. Recessed lights are best for the shower stalls and areas over bathtubs and toilets.
There is no rule such that the bathroom lighting should be provided only in the ceiling or is better if it is provided at the sides or on top of the mirror. One has to fix the bathroom lightings according to one's taste and the mood that he or she wants to bring into the room. Even for a small bathroom, people, these days, go for two or more lighting fixtures. Thus, lighting is the most important factor to be considered in any modern bathrooms.