Niaj hnub no, cov neeg siv khoom tab tom nrhiav rau cov khoom lag luam uas maj mam, tuaj yeem tsim ruaj khov, nplua nuj thiab velvety foaming tab sis tsis dehydrate ntawm daim tawv nqaij, Yog li ib qho me me, kev ua tau zoo surfactant yog qhov tseem ceeb ...
Nyeem ntxiv