Halogen bulb headlights have been an industry standard for a long time now, as they are cheap to produce and last a relatively long time. As the name suggests, they are filled with halogen gas, and a typical halogen bulb headlight will last around 2,000 hours. Halogen bulbs also tend to be brighter than incandescent bulbs. Quick answer: in the trash, but ask your local recycling center. Halogen bulbs are simple for consumers. You can safely throw them away with the rest of your trash, if you'd like. Unfortunately, because they do contain halogen gas, they are not easy to recycle and not all city recycling centers will accept them. It's a good idea to call your local recycle center and ask if they allow you to recycle headlights, and what guidelines you might need to follow.

LED (light emitting diode) bulbs have many benefits, including environmental ones. They are brighter than halogen bulbs, and tend to last much longer. They are also more energy efficient, making them more environmentally friendly. LED headlights can also which is significantly longer than halogen lights—and less work for the consumer because you have to change them less frequently. Quick answer: in the trash, but ask your local recycling center. Just like halogen bulbs, LED bulbs can be safely thrown in the trash like you would household garbage. That said, sometimes of your LED bulb can be recycled, and some recycling centers will accept whole or parts of LED bulbs. Contact your local recycling center to find out what you can do.

Even if you don't know what xenon headlights are, you could probably recognize them on the road. They are the headlights that tend to have a bluish hue, and are particularly bright. These are also called Xenon HID bulbs, which stands for High Intensity Discharge, are made up of multiple types of gases inside. Consumers should also know that xenon bulbs also tend to be more expensive. They'll last around 10,000 hours. Quick answer: it depends if they contain mercury. Most newer xenon HID headlights do not contain mercury, and are therefore safe to throw away in the trash or recycle if your local center accepts them. However, some older xenon bulbs might contain mercury, so you should double check if you have a very old pair. and toxic, even at very low levels, so it's not safe to get thrown into a landfill.