Abu l-Hasan Ali Ibn Nafi – who was also known as Ziryab (black singing bird in Arabic) and Pájaro Negro (blackbird) in Spanish- was a polymath, with knowledge in astronomy, geography, meteorology, botanics, cosmetics, culinary art and fashion. He is known for starting a vogue by changing clothes according to the weather and season. He also suggested different clothing for mornings, afternoons and evenings.
He created a deodorant to eliminate bad odors, promoted morning and evening baths, and emphasized maintaining personal hygiene. Ziryab is believed to have invented an early toothpaste, which he popularized throughout Islamic Iberia – primarily in Spain.
He made fashionable shaving among men and set new haircut trends. Royalty used to wash their hair with rosewater, but Ziryab introduced salt and fragrant oils to improve the hair’s condition.