Guerlain Oud Essentiel Perfume by Guerlain, Guerlain oud essentiel perfume is a sweet, woody unisex blend designed by french perfumer thierry wasser for everyday wear in the crisp, cold months. This 2017 fragrance is immediate distinguished by spicy pelargonium and saffron top notes. The heart consists of both wood and floral notes, including rose, smooth cedar and agarwood (also known as oud, inspiring the name of this scent).