Hollywood’s depiction of the movie star’s dressing room shows the ideal situation – a makeup mirror at a comfortable countertop completely surrounded by incandescent lights, producing a bright, evenly illuminated area in which to do hair and apply makeup.
Replicating this design at home is expensive, inefficient, and can actually be dangerous.
Most people apply makeup, shave, and perform other personal grooming tasks in the bathroom. Incandescent bulbs can be hazardous when placed so close to a sink, and at very least will require ground fault protection by most electrical codes. And in terms of power consumption, they will be very inefficient, consuming hundreds of watts of electricity any time they are on, which might not only be when they are directly used for grooming purposes. This can make their installation even less efficient. A “wall” of light bulbs will be an inefficient and unappealing method to light an entire room.