Bathroom lighting should be uniform, bright and must minimize glare. For all the activities like shaving, showering, grooming etc. one must ensure equitable lighting across the entire bathroom space. The mirror area should definitely have at least two sources of light at least 1 feet apart to eliminate any shadows on the face. Skin tones and hair color are highlighted with a tinge of yellow light. Ceiling and wall lights must be safe for use in a bathroom (electrical parts need to be splash proof) and therefore must carry appropriate certification such as IP44.
All forms of bathroom lighting should be IP44 rated as safe to use in the bathroom.