Hibiscus abelmoschus seed extract is a fragrant extract obtained from Musk mallow seeds. Musk mallow is an aromatic plant related to marsh mallow and hibiscus and is native to Asia and Australia.
The seeds have a heavy, sweet, and musky fragrance similar to that of animal musk (which the extract was once used as a substitute for). Nowadays there are synthetic perfumes for this purpose, and so Musk mallow is rarely used.
Science
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Molfetta, I., Ceccarini, L., Macchia, M., Flamini, G., & Cioni, P. L. (2013). Abelmoschus esculentus (L.) Moench. and Abelmoschus moschatus Medik: Seeds production and analysis of the volatile compounds. Food Chemistry, 141(1), 34–40.