Butylated Hydroxytoluene (BHT) is a synthetic antioxidant commonly used as a preservative in food, cosmetics, pharmaceuticals, and various industrial products. It helps prevent the oxidation of fats and oils, which can cause them to spoil or go rancid.
BHT is chemically derived from phenol and has the chemical formula **C15H24O**. Its primary function is to inhibit the oxidation process by scavenging free radicals that would otherwise degrade products. This prolongs shelf life and maintains product stability.
While BHT is generally recognized as safe (GRAS) by regulatory authorities like the FDA when used in low concentrations, there has been some controversy over its long-term effects, particularly in high doses, based on studies involving animals. However, its effects on humans remain a topic of ongoing research.