(Salvadora persica)
Salvadora persica (arak, Galenia asiatica, meswak, peelu, pīlu, Salvadora indica, or toothbrush tree, mustard tree, mustard bush), is a species of Salvadora.Salvadora persica has antiurolithiatic properties. Used for centuries as a natural toothbrush, its fibrous branches have been mentioned by the World Health Organization for oral hygiene use.