"Kuv muaj kev noj qab nyob zoo, cov hniav muaj zog, tab sis cov xim ntawm tus txha hniav laus tsis haum kuv. Yuav ua li cas rau brighten nws nyob rau hauv tsev nrog minimal poob? "
Raws li cov txiaj ntsig ntawm kev sojntsuam ntawm ib puas tus neeg mob uas xav txhim kho cov xim ntawm lawv cov hniav, txoj kev nyiam tshaj plaws yog kev siv tshuaj txhuam hniav kom dawb. Ua ntej, cov no yog cov ua kom cov tshuaj tua pov tseg kom pom tseeb tias muaj cov khoom sib thooj ntawm ntau yam abrasives. Ntawm ib sab tes, lawv Polish zoo thiab tshem tawm txoj kev nyab xeeb, tab sis nyob rau lwm yam, cov txha hniav laus thiab cov pos hniav yog cov menyuam. Abrasive hais tau "kos" saum npoo ntawm lub foob. Txhawm rau kom tsis txhob muaj kev puas tsuaj enamel, cov kws tshaj lij pom zoo xaiv cov yees duab uas muaj cov khoom siv abrasive. Ib qho ntawm kev nyab xeeb tshaj plaws cov neeg sawv cev yog Papain enzyme (rho tawm los ntawm Papaya txiv hmab txiv ntoo). Qhov kev enzyme ntuj no muab kev qhia abrasive qis. Bromelain enzyme tau los ntawm cov kua txiv ntoo pinapple kuj ua rau kev cais ntawm cov quav hniav. Ua kom cov thee yog cov abrasive mos muag, tsis puas cov qauv ntawm tus txha caj qaum. Txhawm rau ua kom pom cov txha hniav laus ntawm ob lossis peb lub suab hauv tsev, nws raug nquahu kom xaiv cov pastes nrog cov pa oxygen nquag plev. Cov pigments nyob rau hauv kev ua ntawm whitening tus neeg sawv cev los ua pob tshab, thiab cov hniav yog xim dawb. Ntxiv rau, cov tshuaj txhuam ntawm hom no yog lub peev xwm los ua kom pom cov hniav sai sai. Txhawm rau kom tsis txhob muaj kev nkag siab zoo ntawm cov hniav, cov pastes no yuav tsum siv los ntawm chav kawm, sib txuas nrog cov txhais tau tias, reminalalizing txha hniav laus.
Saida Kamenev, Splat Hom Kws Tshaj Lij