Halogen bulbs are a type of incandescent light bulb that contain a small amount of halogen gas, which helps improve their efficiency and lifespan. They produce a bright, white light and are commonly used in homes, cars, and outdoor lighting. The halogen gas allows the bulb to operate at a higher temperature, resulting in a more intense light output. These bulbs are known for their compact size and ability to provide instant brightness. However, they can get very hot during use, so caution is needed when handling them. Halogen bulbs are often favored for their color rendering, making them ideal for tasks requiring good visibility.