Cov khoom xyaw ntxuav hauv lub ntsej muag feem ntau muab faib ua ob pawg: amino acid surfactants thiab xab npum- raws li cov tshuaj ntxuav. Amino acid cleansers siv acyl amino acid ntsev ua lub ntsiab surfactants, xws li potassium cocoyl glycinate thiab sodium lauroyl glutamate. Lawv tus nqi pH nyob ze rau ntawm daim tawv nqaij ib puag ncig acidic, ua rau lawv maj mam thiab tawv nqaij - phooj ywg. Cov xab npum- cov tshuaj ntxuav tes feem ntau muaj cov poov tshuaj hydroxide lossis fatty acid ntsev (xws li potassium myristate). Lawv muaj peev xwm ntxuav tau zoo thiab ua npuas ncauj tab sis yuav ua rau ntau tshaj - ntxuav. Kev txiav txim los ntawm cov npe khoom, yog tias cov poov tshuaj hydroxide lossis fatty acid ntsev (xws li stearic acid thiab myristic acid) tau teev tseg ua ntej, lossis yog cov khoom npe muaj cov lus xws li "kev ntxuav tob tob" lossis "roj tswj," feem ntau yog xab npum -raws li formula. Cov xab npum-raws li cov tshuaj ntxuav lub ntsej muag kuj yog ib hom, tab sis vim lawv cov yam ntxwv sib txawv, lawv feem ntau raug kho txawv ntawm cov tshuaj ntxuav tes uas siv cov surfactants zoo tib yam.
Tam sim no, cov qauv hauv kev ntxuav lub ntsej muag yog siv cov qauv sib xyaw, xws li "amino acids + APG (alkyl glucoside)" lossis "amino acids + amphoteric surfactants," aiming kom sib npaug ntawm kev ntxuav lub zog thiab maj mam.