BHT, or Butylated Hydroxytoluene, is a synthetic antioxidant commonly used in food preservation. It helps prevent the oxidation of fats and oils, which can lead to rancidity and spoilage. BHT is often found in processed foods, snacks, and cosmetics, extending their shelf life and maintaining flavor. In addition to its use in food, BHT is also utilized in various industrial applications, such as in the production of rubber and petroleum products. While generally recognized as safe by regulatory agencies, some studies have raised concerns about its potential health effects, prompting ongoing research into its safety.