Rhubarb leaf in perfumery is a synthetic-led accord: real rhubarb leaves are toxic, and the natural extract is rarely used, so the note is built around aldehyde fractions and green-acid molecules that mimic the sharp, slightly metallic, tartly green impression of the plant's foliage. Niche perfumery adopted the accord during the 2010s as a top-note option offering brightness without any sweetness signal. Bond No. 9 Harrods For Him at Parfum Central pairs rhubarb leaf with chamomile and pimento for an unusual herbal-aromatic opening.
