The oil derived from bergamot delivers a fresh, citrus scent. The bergamot orange is a native of tropical Asia but now mostly grows in Europe and the Ivory Coast. Unlike the rest of the fragrances on this list, the essential oil of bergamot isn't extracted through steam distillation. It's extracted through cold expression -- a process that involves crushing the peel of the unripened fruit and then separating the oil from the pulp. The scent of bergamot is said to build confidence and uplift spirits, so the next time you're feeling low, take a whiff and feel better!