Propyl gallate is widely used as an antioxidant in the food industry to prevent the oxidation of fats and oils, extending the shelf life of products such as edible oils, snacks, and processed meats. It is also employed in cosmetics and personal care items to stabilize formulations and protect them from degradation caused by exposure to air. Additionally, it finds application in the pharmaceutical industry to preserve the efficacy of certain medications by inhibiting oxidative damage. Its ability to scavenge free radicals makes it a valuable additive in products prone to spoilage or rancidity.