Odor Description – A complex, rich, sweet, vanilla, rum, toffee aroma. Vanilla absolute is the most concentrated form of vanilla. It is often used in perfumes and other aroma-based products. Because it’s so expensive, it is used in very high-end products in small quantities, often mixed with other fragrances in perfumes, however, a little goes a long way. If you are making perfumes, soaps or candles and you don’t want the cloying aroma of imitation vanilla, it’s worth investing in vanilla absolute.