Kho kom zoo nkauj iav ntim khoom siv feem ntau; Muaj ntau ntau:
1. Sodium-calcium iav: cov khoom siv iav feem ntau siv thiab dav siv. Nws muaj kev ruaj ntseg tshuaj zoo thiab tus nqi qis. Piv txwv li, qee cov khoom siv tu tawv nqaij yooj yim xws li tshuaj pleev, tshuaj pleev lub raj mis yuav siv cov iav sodium-calcium.
2. Borosilicate iav: zoo tiv thaiv tshav kub, tuaj yeem tiv taus kev hloov pauv ntawm qhov kub thiab txias, nrog rau cov tshuaj lom neeg ruaj khov thiab muaj zog dua. Zoo li qee cov khoom uas yuav tsum tau pasteurized ntawm qhov kub thiab txias los yog xav tau kom muaj kev ruaj ntseg ntawm cov khoom xyaw, cov essence, ampneed thiab lwm yam khoom yuav xaiv borosilicate iav ntim.
3 Xim iav: xws li xiav, ntsuab, xim av thiab lwm yam xim iav. Cov iav xim muaj peev xwm ua tau lub luag haujlwm hauv kev ntxoov ntxoo, pab tiv thaiv lub teeb-sensitive cosmetic cov khoom xyaw, feem ntau siv rau hauv ntim cov khoom siv tshuaj pleev thaiv hnub, qee cov khoom tseem ceeb roj.
