Thaum nws los txog rau cov khoom xyaw ntawm cov tshuaj pleev ib ce, kev ntxiv cawv (ethanol) tau dhau los ua qhov chaw tseem ceeb ntawm kev tsis sib haum xeeb thiab kev saib xyuas. Cawv muaj ntau yam haujlwm thiab kev siv sib txawv hauv cov tshuaj pleev ib ce, thiab peb yuav saib ze dua seb vim li cas nws thiaj li yog cov khoom xyaw feem ntau hauv cov tshuaj pleev ib ce.

Cawv, lub npe tshuaj lom neeg hu ua ethanol, yog cov kuab tshuaj organic. Qee cov kws tshaj lij ntawm daim tawv nqaij ntseeg tias kev siv cawv kom tsim nyog yog qhov zoo rau kev noj qab haus huv ntawm daim tawv nqaij, tshwj xeeb tshaj yog rau cov tawv nqaij oily thiab cov tawv nqaij uas muaj pob txuv thiab pob txuv. Ntxiv mus, cawv yog ib qho khoom xyaw tseem ceeb rau cov neeg tsim cov khoom siv los tsim cov khoom. Kev ntxiv cawv hauv cov tshuaj pleev ib ce feem ntau yog raws li plaub yam ntxwv tseem ceeb ntawm cawv. Cov yam ntxwv no ua rau nws nyuaj rau nrhiav cov khoom hloov cawv.

(1) Kev Nkag Mus: Cawv yog ib yam khoom uas ua rau nkag mus tau zoo, uas tuaj yeem pab qee cov khoom xyaw nquag nkag mus rau hauv daim tawv nqaij kom ua haujlwm tau zoo dua. Tshwj xeeb tshaj yog rau qee cov khoom uas muaj qee yam txiaj ntsig, xws li cov tshuaj tshem tawm cov quav hnav thiab cov tshuaj dawb, cov tshuaj tswj roj, thiab lwm yam, cawv tuaj yeem siv los txhawb kev nqus cov khoom xyaw ua haujlwm.

(2) Cov nyhuv tswj roj: Cawv tuaj yeem yaj cov sebum ntawm lub ntsej muag thiab yog ib qho khoom xyaw zoo rau kev ntxuav thiab tshem tawm roj. Nws kuj muaj cov nyhuv astringent, pab kom cov qhov hws me me. Qhov no muaj txiaj ntsig zoo rau cov tawv nqaij oily, vim nws tuaj yeem tswj cov roj tso tawm thiab tiv thaiv kev ua kom lub ntsej muag oily, tab sis nws tsis haum rau cov tawv nqaij qhuav thiab rhiab heev.

(3) Cov nyhuv ua kom mos: Cawv tuaj yeem txhawb kev ua haujlwm ntawm cov keratinocytes, ua kom cov keratinocytes sib cais sai dua, thiab pab rov ua kom cov stratum corneum tshiab. Cov nyhuv no zoo heev rau cov tawv nqaij uas muaj cov stratum corneum tuab dua, tab sis tsis haum rau cov tawv nqaij uas muaj cov stratum corneum nyias dua.

(4) Cov nyhuv ntawm kev yaj: Qee cov khoom xyaw uas yaj tau hauv roj nyuaj rau yaj ncaj qha rau hauv dej. Hauv qhov no, xav tau tus neeg nruab nrab los pab yaj lawv hauv dej. Cawv yog tus neeg nruab nrab zoo, uas tsis tsuas yog pab cov khoom xyaw nquag no yaj hauv dej, tab sis kuj tseem tswj tau qhov pom tseeb ntawm cov toner. Tsis tas li ntawd, ntau cov nroj tsuag xav tau cawv ua cov tshuaj rho tawm, vim tias yog tsis siv cawv, cov khoom xyaw nquag hauv cov nroj tsuag tsis tuaj yeem rho tawm. Qhov no yog ib qho laj thawj vim li cas ntau cov nroj tsuag rho tawm muaj cawv.

Kev tsis sib haum xeeb txog cawv
Txawm hais tias nws muaj ntau yam haujlwm hauv kev siv tshuaj pleev ib ce, kev siv cawv kuj ua rau muaj qee qhov kev txhawj xeeb. Qee tus neeg siv khoom yuav txhawj xeeb txog cov khoom muaj cawv, uas yuav ua rau daim tawv nqaij qhuav, khaus lossis ua rau muaj kev tsis haum tshuaj. Yog li ntawd, cov tshuaj pleev ib ce uas muaj cawv yuav tsis haum rau qee tus neeg uas muaj daim tawv nqaij rhiab heev lossis ua xua rau cawv.

Kev xaiv cawv
Hauv kev ua lag luam niaj hnub no, cov tshuaj pleev ib ce muaj ntau yam khoom uas muaj cov cawv sib txawv. Qee cov khoom siv cov cawv ntau, thaum lwm cov yog tsim los ntawm cov cawv tsawg lossis tsis muaj kom tau raws li cov kev xav tau ntawm cov neeg siv khoom thiab hom tawv nqaij sib txawv.

Xaus lus
Tag nrho hauv txhua yam, cawv siv rau hauv cov tshuaj pleev ib ce rau ntau yam laj thawj thiab kev ua haujlwm. Nws yog ib qho tseem ceeb rau cov neeg siv khoom kom nkag siab txog cov teebmeem ntawm cawv thiab nkag siab txog lawv hom tawv nqaij kom ua qhov kev xaiv khoom zoo rau lawv. Qhov no pab ua kom ntseeg tau tias koj cov kev xav tau thiab kev noj qab haus huv ntawm daim tawv nqaij raug coj los xav txog thaum xaiv cov khoom thaum koj txoj kev zoo nkauj thiab kev saib xyuas tawv nqaij.