Coumarin is a natural organic substance. It is the main component of the tonka bean and its smell is sweet and powdery. Used in particular to reproduce the smell of almond, it was one of the first natural compounds to be synthesized. Coumarin evokes a smell of dried straw, tobacco or hay. It is widely used in oriental or woody perfumes. It is also found in the most gourmand of our perfumes: vanille.