Nws tsis yog hais tias ntau npaus, lub zog detergency. Vim muaj ntau yam ntawm cov hmoov ntxhua khaub ncaws thiab lawv cov yam ntxwv sib txawv, feem ntau nyuaj rau cov neeg xaiv thiab siv lawv kom raug, ua rau khib nyiab thiab cuam tshuam rau kev siv. Raws li cov kws tshaj lij, cov hmoov ntxhua khaub ncaws yog tsim los ntawm surfactants, polyphosphates, 4A zeolite, dej-soluble silicates, enzymes, thiab lwm yam tsim thiab dispersants. Raws li phosphorus cov ntsiab lus ntawm cov hmoov ntxhua khaub ncaws, nws tuaj yeem muab faib ua cov hmoov ntxhua tsis muaj phosphorus thiab phosphorus, thiab raws li nws cov kev ua haujlwm ntxuav, nws tuaj yeem muab faib ua cov hmoov ntxhua khaub ncaws zoo tib yam. Cov hmoov ntxhua khaub ncaws (hom A) muaj cov khoom loj thiab xoob, zoo solubility, thiab nplua nuj ua npuas ncauj, tab sis kuj tsis muaj zog detergency, tsis yooj yim rau yaug, thiab feem ntau haum rau ntxuav tes. Cov hmoov nplej siab (hom B) muaj qhov me me, thiab ua npuas dej siab, yooj yim ua kom huv si, yooj yim ua kom huv si, thiab feem ntau haum rau lub tshuab ntxuav. Qee cov neeg siv khoom yuam kev ntseeg tias ntau cov npuas dej ntxhua khaub ncaws muaj, qhov zoo dua. Qhov tseeb, tus nqi ntawm cov npuas dej tsis yog ncaj qha cuam tshuam nrog kev detergency.