Xav tau thiab xaiv cov lus qhia rau cov khoom tu tawv nqaij rau cov tawv nqaij sib txawv

Oily daim tawv nqaij: Xaiv cov khoom huv nrog cov roj tswj cov roj zoo dua thiab cov roj ua kom zoo dua lossis cov roj pleev zoo li cov khoom tu tawv nqaij.
Cov tawv nqaij qhuav: Xaiv cov khoom ntxuav kom huv nrog cov wellururizing zoo dua thiab cov dej noo noo lossis pleev tshuaj pleev.
Cov tawv nqaij rhiab: xaiv cov tawv nqaij sib xyaw thiab tsis muaj cov khoom lag luam tawv nqaij muaj cov tshuaj lom xws li tshuaj tsw qab thiab haus cawv.
Kev sib xyaw ua ke: Xaiv cov khoom tu tawv nqaij haum raws li cov kev xav tau ntawm cov khoom sib txawv, xws li siv cov khoom siv roj nyob hauv thaj chaw qhuav.