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