Cov khoom xyaw di ncauj gloss yog tus cwj pwm los ntawm cov khoom sib txawv ntawm lub cev uas sib txuas cov roj theem nrog cov txheej txheem tsim khoom. Tshwj xeeb, cov roj-raws li cov khoom xyaw (xws li roj castor thiab hluavtaws esters) feem ntau muaj nyob hauv cov kua lossis ib nrab -kua lub xeev; lawv muaj kev sib kis tau zoo heev thiab lubricity, uas yuav pab txo qis cov nplaum lossis tacky hnov qab hauv cov khoom kawg thaum tsim cov yeeb yaj kiab du, gliding ntawm daim di ncauj. Hloov pauv, siv quav ciab-raws li cov khoom xyaw (xws li beeswax thiab microcrystalline wax) yog cov khoom zoo; nyob rau hauv chav tsev kub, lawv muab cov qauv kev txhawb nqa-ua kom lub ntsej muag gloss kom muaj daim ntawv ruaj khov-thaum ib txhij muab qee qhov ntsuas ntawm lub cev thiab zaj duab xis- tsim muaj peev xwm.
Cov khoom xyaw di ncauj gloss feem ntau yuav tsum tau ua kom pom kev ruaj khov thiab qis qis. Cov roj thiab waxes siv yuav tsum muaj cov khoom muaj zog antioxidant kom tiv thaiv rancidity los yog hloov cov ntxhiab thaum khaws cia. Tsis tas li ntawd, cov xim xim thiab cov xim pearlescent yuav tsum ua kom pom cov tshuaj inertness, tiv thaiv cov tshuaj tiv thaiv nrog cov roj-raws li lub tsheb kom ntseeg tau tias cov xim ruaj khov thiab cov khoom ruaj ntseg. Tsis tas li ntawd, tag nrho cov formulation feem ntau nta ib qho uas tsis yog - aqueous los yog qis - aqueous qauv; thaum qhov no ua rau txo qis kev pheej hmoo ntawm microbial proliferation, tsim nyog preservative systems los yog nruj txheej txheem tswj tseem ceeb heev kom muaj kev nyab xeeb thiab huv si.
Kev xaiv ntawm daim di ncauj gloss cov khoom xyaw muab qhov tseem ceeb ntawm kev sib npaug ntawm kev nplij siab nrog kev ua haujlwm. Cov khoom xyaw no yuav tsum ua hauj lwm hauv kev hais kwv txhiaj los ua ib zaj duab xis nyias nyias tsis tu ncua ntawm daim di ncauj -ib qho uas ua rau cov dej ntws zoo yam tsis tau tsim kom pom qhov hnyav lossis qhov hnyav. Tsis tas li ntawd, qhov sib piv tshwj xeeb thiab kev sib xyaw ua ke ntawm cov khoom xyaw sib txawv no ncaj qha cuam tshuam rau cov khoom lag luam qib gloss, kev ua neej ntev, thiab xim them nyiaj, yog li ua rau lub ntsej muag gloss kom xa cov yam ntxwv ua tau zoo thoob plaws ntau yam ntawm daim ntawv thov scenarios.