Xim ntawm daim ntawv, kho cov xim ntawm cov ntawv dawb, thiab sib piv ntawm daim ntawv zoo li tus qauv pom zoo los ntawm tus neeg siv khoom.Cationic dyes tuaj yeem muaj txiaj ntsig zoo nyob rau hauv cov xwm txheej uas cov dej ntws tawm yuav tsum tsis muaj xim, lossis qhov ntau zaus ntawm kev hloov pauv ntawm cov khoom xim sib txawv muab kev txhawb siab rau kev ua kom cov dej dawb tsis muaj cov xim seem.