Coumarin, a naturally occurring compound found in plants such as tonka beans and sweet clover, is a warm, sweet, and slightly spicy note in perfumery. Known for its soft, hay-like aroma, it adds a comforting, powdery sweetness to fragrances. Often used in gourmand, floral, and woody compositions, coumarin brings an aromatic, rich warmth and a slightly tobacco-like, vanilla-tinged character.

Coumarin has a sweet, warm aroma with hay, almond, and vanilla undertones. Its scent is smooth, rich, and slightly spicy, with subtle hints of dried grass and a faint, nutty undertone. The overall profile is warm, comforting, and slightly powdery, evoking the sensation of sweet, sun-dried fields. Coumarin enhances perfumes by adding depth and a soft sweetness that provides warmth and complexity, making it a popular note for creating cozy, sensual, and luxurious fragrances.