Answer:
1. Change or upgrade existing light fixtures to more energy-efficient options such as LED bulbs, for better illumination.
2. Make use of natural light by installing higher windows or skylights, to let in additional sunlight during daytime.
3. Paint walls and ceilings in bright colors, to reflect light and make the room brighter.
4. Rearrange furniture and accessories in the salon to maximize the use of available light.
5. Utilize wall-mounted mirrors for reflection, to increase the brightness in the room.