Ua ntej, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov tuam txhab uas tsim cov khoom siv gel yuav tsum tau txais daim ntawv tso cai tsim khoom (cov kua dej dav dav gel) thiab daim ntawv tso cai huv (tso rau siv). Tsis tas li ntawd, cov plaub hau zoo tagnrho gel cream lossis gel dej yuav tsum muaj cov yam ntxwv hauv qab no:
①Yuav tsum muaj kev ruaj ntseg zoo thiab pob tshab zoo li thaum lub sijhawm lav. Cov gel muab tshuaj yuav tsum tsis txhob tshwm sim, cov viscosity ruaj khov, cov tshuaj txhuam yuav tsum tsis txhob nyias, thiab cov gel dej yuav tsum tsis txhob muaj flocs.
②Cov gel cream zoo li gel, tab sis nws yuav tsum tsis txhob nplaum thiab yuav tsum yooj yim thov tusyees ntawm cov plaub hau ntub los yog qhuav.
③Cov zaj duab xis tsim yog tsis nplaum, yooj yim rau comb, thiab tuav ib tug natural thiab refreshing teeb nyhuv.
④Txau cov dej gel, cov nyhuv tshuaj tsuag yog qhov zoo, thiab cov huab cua yog sib npaug rau cov plaub hau.
⑤Nws muaj qhov zoo txias thiab styling ntxim rau cov plaub hau, thiab muab cov plaub hau ci ntsa iab.
⑥Yooj yim ntxuav nrog tshuaj zawv plaub hau. Rau cov plaub hau tsis-alcoholic, yog tias nws raug cim rau ntawm daim ntawv lo, cov khoom yuav tsum yog ethanol-tsis pom.