The halogen light bulb or lamp is a type of incandescent lamp which uses a halogen gas in order to increase both light output and rated life. They are known for moderately high efficiency, quality of light, and high rated life compared to regular incandescent light bulbs.
Halogen General Lamp Shape (GLS) eco bulbs are available with an E27 or B22 base type. These dimmable, energy efficient traditional shaped lamps are direct replacements for any incandescent lamps. GLS eco light bulbs are commonly used in overhead light fixtures, reading lamps, and desk lamps.