1, PE khoom yog mos muag heev, pob tshab, tab sis tuab PE hnab yas, yuav hnov me ntsis creamy, tab sis tsis cuam tshuam rau cov khoom ntawm lub hnab khoom. Xaiv lub suab zoo heev, zoo nkaus li mos, siv los tiv thaiv cov khoom ntim, yuav tsis kos cov khoom; Po yuav muaj suab nrov ntau dua, hnov mob heev, tab sis tib lub thickness yuav hnov ntau tuab.
2, PO cov ntaub ntawv npuav, yuav nrov heev, nws suab nrov; PE hnab yas khoom, nqa cov cua tsis muaj cov khoom sib txhuam.
