Ua ib yam khoom nrov hauv thaj teb ntawmkev saib xyuas tawv nqaij, cov tshuaj dawb tau dhau los ua ib yam khoom tseem ceeb rau cov neeg uas nrhiav kev ua kom daim tawv nqaij ci ntsa iab thiab ci ntsa iab, ua tsaug rau nws cov khoom xyaw nquag uas muaj ntau thiab cov teebmeem tshwj xeeb. Nws txoj kev ua haujlwm tsis yog ib qho xwb tab sis ua haujlwm ua ke ntawm ntau theem los coj kev rov ua dua tshiab ntawm daim tawv nqaij los ntawm sab hauv mus rau sab nraud.
Nyob rau ntawm qhov chaw ntawm melanin tsim, whiteninglub ntsiab lusyuav hais tau tias "nyob rau hauv kev ceeb toom siab". Piv txwv li nicotinamide. Nws tuaj yeem tiv thaiv cov txheej txheem thauj melanin los ntawm cov hlwb basal mus rau cov hlwb epidermal, ib yam li teeb tsa txoj kev thaiv ntawm txoj kev tsis zam ntawm melanin "transporters", txo qhov tso melanin rau ntawm daim tawv nqaij. Transimic acid fundamentally txiav tawm cov saw hlau ntawm melanin los ntawm kev txwv tsis pub ua haujlwm ntawm tyrosinase. Txoj kev tiv thaiv kev dawb no yog qhov tshwj xeeb tshaj yog rau cov neeg uas raug rau ultraviolet rays ntev lossis muaj feem yuav pigmentation vim o.
Thaum melanin twb tsim lawm, cov tshuaj dawb yuav hloov mus ua "tus tswv ntxuav". Cov khoom xws li txiv hmab txiv ntoo acid thiab salicylic acid tuaj yeem ua rau lub stratum corneum rov ua dua tshiab thiab ua kom cov keratin qub thiab pov tseg sai dua. Nws zoo li muab daim tawv nqaij ntxuav tob, tso cai rau cov hlwb tawv nqaij tshiab thiab ci ntsa iab, thiab txhim kho cov teeb meem ntawm cov tawv nqaij tsis sib xws thiab roughness thiab dullness. Lub caij no, vitamin C thiab nws cov derivatives, nrog lawv cov peev xwm antioxidant muaj zog, tsis tsuas yog tuaj yeem tshem tawm cov free radicals tsim los ntawm cov yam ntxwv sab nraud xws li ultraviolet rays thiab kev ua qias tuaj, tab sis kuj txo cov melanin oxidized uas twb muaj lawm, rov qab ua kom daim tawv nqaij zoo li qub.
Rau cov pob khaus tawv nqaij hauv zos, cov tshuaj dawb kuj muaj txoj hauv kev "ua kom raug". Cov khoom xyaw xws li 377 thiab hydroquinone (siv raws li kev qhia kho mob) tuaj yeem nkag mus tob rau hauv txheej tawv nqaij thiab ua haujlwm ncaj qha rau cov melanin uas twb tau sau lawm, txhawb lawv txoj kev lwj thiab kev ploj mus. Azelaic acid tsis yog tsuas yog tiv thaiv kev tsim melanin xwb tab sis kuj muaj cov teebmeem tiv thaiv kev o, txhim kho cov xim tawv nqaij uas tseem tshuav tom qab o.
Ntxiv rau kev ua kom dawb, cov hyaluronic acid, ceramide thiab lwm yam khoom xyaw hauv cov tshuaj pleev ib ce kuj tseem tuaj yeem sib npaug ntawm kev ua kom noo thiab kho, tsim kom muaj kev tiv thaiv zoo rau daim tawv nqaij. Daim tawv nqaij noj qab haus huv thiab muaj dej noo tuaj yeem cuam tshuam lub teeb zoo dua thiab nthuav tawm cov lus ci ntuj thiab pob tshab. Tsis tas li ntawd, qee cov tshuaj pleev ib ce muaj cov khoom xyaw tiv thaiv glycation xws li carnosine thiab hyaluronic acid, uas tsis yog tsuas yog ua kom daim tawv nqaij dawb xwb tab sis kuj tiv thaiv collagen los ntawm glycation, tiv thaiv daim tawv nqaij kom tsis txhob tig daj vim laus.
Txawm li cas los xij, txhawm rau kom ua tau zoo tshaj plaws ntawm cov tshuaj dawb, kev siv kom raug yog qhov tseem ceeb. Nws yog qhov zoo tshaj plaws los tsim kom muaj kev kam rau ua ntej siv, tshwj xeeb tshaj yog rau cov khoom muaj cov kua qaub lossis cov khoom xyaw nquag uas muaj zog heev. Tom qab siv thaum nruab hnub, yuav tsum tau ua raws li kev tiv thaiv hnub nruj; txwv tsis pub, cov txiaj ntsig dawb tuaj yeem yooj yim "rhuav tshem" los ntawm cov duab ultraviolet. Tib lub sijhawm, nws yog qhov tsim nyog yuav tsum tau them sai sai rau cov kev txwv ntawm cov khoom xyaw sib xyaw kom tsis txhob khaus tawv nqaij los ntawm kev tsis sib haum xeeb ntawm cov khoom xyaw. Kev dawb tsis yog ib yam dab tsi uas tuaj yeem ua tiav ib hmos. Tsuas yog siv nws tas li rau 4 txog 8 lub lis piam, ua ke nrog lub sijhawm tsis tu ncua thiab kev noj qab haus huv, ib tus tuaj yeem ua tiav qhov xav tau.ua kom dawbcov nyhuv thiab ua rau daim tawv nqaij ci ntsa iab nrog lub ci ntsa iab thiab radiant.
Lub sijhawm tshaj tawm: Tsib Hlis-26-2025
