Rau cov lag luam uas xav tau cov tshuaj ua kom tuab, ua kom gelling, thiab ua kom ruaj khov zoo tshaj plaws, Hydroxyethylcellulose (HEC) sawv tawm ua ib qho kev daws teeb meem uas siv tau ntau yam thiab tseem ceeb. Thaum nrhiav cov chaw tsim khoom zoo tshaj plaws hauv HEC, tsis txhob nrhiav ntxiv lawm. Peb txoj kev cog lus rau kev tsim kho tshiab thiab zoo ua rau peb sib txawv hauv kev tsim khoom.