Txawm hais tias cov moisturizers tsis tuaj yeem khov, kev cia kom zoo yog qhov tseem ceeb kom ntseeg tau tias lawv zoo. Feem ntau, cov moisturizers yuav tsum muab cia rau hauv qhov chaw qhuav, tsaus, thiab zoo - qhov chaw muaj cua. Vim tias cov moisturizers muaj ntau cov khoom xyaw tsis haum, khaws cia rau hauv qhov chaw ntub dej tuaj yeem ua rau pwm thiab lwj. Kev zam lub hnub ci ncaj qha yuav tiv thaiv cov khoom xyaw los ntawm oxidizing thiab decomposing, yog li cuam tshuam rau lawv cov nyhuv moisturizing. Tsis tas li ntawd, moisturizers yuav tsum tau khaws cia kom deb ntawm huab cua kom ntau li ntau tau, vim qhov no tuaj yeem ua rau oxidation ntawm cov khoom xyaw thiab txo lawv cov txiaj ntsig.
