Sapindus, the Latin scientific name of Sapindus, is the abbreviation of saponis indicus, meaning "Indian soap", because its thick fleshy peel contains saponin, as long as it is rubbed with water, it will produce foam, which can be used for cleaning and is the main cleaning One of the agents.Sapindus saponin is a natural non-ionic surfactant, which can reduce the surface tension of water.