Lighter fluid is a flammable liquid used primarily to ignite charcoal in grills or to start campfires. It is typically made from hydrocarbons, which are derived from petroleum. The fluid is designed to evaporate quickly, allowing for an easy and efficient ignition of the fuel source. In addition to its use in grilling, lighter fluid can also be found in some types of cigarette lighters and fire starters. While effective, it is important to handle lighter fluid with care due to its flammable nature and potential health hazards if inhaled or ingested.