Oud is one of the most luxurious and expensive fragrance ingredients in the world, often called “liquid gold” in perfumery. It comes from agarwood trees that produce a dark aromatic resin when naturally infected over many years. This resin is distilled into oud oil, creating a deep woody scent with smoky, warm, earthy, and slightly sweet notes that evolve beautifully on the skin. Oud is especially popular in Middle Eastern and Arabic fragrances because of its rich aroma, strong projection, and long-lasting performance. Depending on the blend, oud can smell smooth and elegant or dark and intense, which is why it’s widely used in premium perfumes, attars, and fragrance oils.