Coumarin is widely used in the fragrance and flavoring industries due to its sweet, vanilla-like aroma. It is a key ingredient in perfumes, soaps, and detergents to add a pleasant scent. In the food industry, it is employed as a flavoring agent in certain beverages, baked goods, and confectionery, though its use is regulated in some countries due to potential health concerns. Additionally, coumarin derivatives are utilized in the pharmaceutical industry for their anticoagulant properties, particularly in medications like warfarin, which helps prevent blood clots. It also finds application in cosmetics, where it acts as a fragrance enhancer and stabilizer in various skincare and beauty products.