Elie Saab La Collection Essence No.4 Oud (U) Edp 100Ml Oud, also known as agarwood, is one of the most precious and sought-after ingredients in perfumery. It has a deep, woody, and often slightly medicinal scent profile that can be both sweet and smoky. In this fragrance, oud is expected to be the star note, providing a rich and opulent aroma.