Vitamin C(VC) yog ib qho khoom xyaw ua kom dawb hauv cov tshuaj pleev ib ce, tab sis muaj lus xaiv tias kev siv cov tshuaj pleev ib ce uas muaj VC thaum nruab hnub yuav tsis tsuas yog ua rau daim tawv dawb xwb, tab sis kuj yuav ua rau daim tawv tsaus ntuj; qee tus neeg txhawj xeeb tias kev siv cov khoom tu tawv nqaij uas muaj VC thiab nicotinamide tib lub sijhawm yuav ua rau ua xua. Kev siv cov tshuaj pleev ib ce uas muaj VC ntev yuav ua rau daim tawv nyias dua. Qhov tseeb, cov no yog kev nkag siab yuam kev txog cov tshuaj pleev ib ce uas muaj VC.
Cuav 1: Siv nws thaum nruab hnub yuav ua rau koj daim tawv nqaij tsaus ntuj
VC, tseem hu ua L-ascorbic acid, yog ib qho tshuaj antioxidant ntuj uas siv tau los kho thiab tiv thaiv kom tawv nqaij kub hnyiab. Hauv cov tshuaj pleev ib ce, VC tuaj yeem ua rau qeeb cov txheej txheem tsim melanin xws li dopaquinone los ntawm kev sib cuam tshuam nrog cov ions tooj liab ntawm qhov chaw ua haujlwm ntawm tyrosinase, yog li cuam tshuam nrog kev tsim melanin thiab ua tiav cov txiaj ntsig ntawm kev ua kom dawb thiab tshem tawm cov quav hnav.
Kev tsim cov melanin muaj feem cuam tshuam nrog cov tshuaj oxidation. Raws li cov tshuaj antioxidant feem ntau,VCtuaj yeem tiv thaiv cov tshuaj tiv thaiv oxidation, tsim kom muaj qee yam dawb, txhim kho kev kho tawv nqaij thiab rov ua dua tshiab, ncua kev laus, thiab txo qhov kev puas tsuaj ultraviolet rau daim tawv nqaij. VC tsis ruaj khov thiab yooj yim oxidized hauv huab cua thiab poob nws cov haujlwm antioxidant. Cov duab ultraviolet yuav ua rau cov txheej txheem oxidation sai dua. Yog li ntawd, nws raug pom zoo kom sivCov tshuaj pleev ib ce uas muaj VCthaum hmo ntuj lossis nyob deb ntawm lub teeb. Txawm hais tias kev siv cov tshuaj pleev ib ce uas muaj VC thaum nruab hnub yuav tsis ua tiav qhov zoo tshaj plaws, nws yuav tsis ua rau daim tawv nqaij tsaus ntuj. Yog tias koj siv cov khoom tu tawv nqaij uas muaj VC thaum nruab hnub, koj yuav tsum tiv thaiv koj tus kheej ntawm lub hnub, xws li hnav khaub ncaws ntev, lub kaus mom, thiab lub kaus mom. Cov teeb pom kev zoo xws li cov teeb incandescent, cov teeb fluorescent, thiab cov teeb LED, tsis zoo li cov teeb ultraviolet, tsis cuam tshuam rau VC, yog li tsis tas yuav txhawj txog lub teeb uas tso tawm los ntawm cov xov tooj ntawm tes cuam tshuam rau qhov ua tau zoo ntawm cov tshuaj pleev ib ce uas muaj VC.
Cuav 2: Siv ntev yuav ua rau daim tawv nqaij nyias dua
Qhov peb feem ntau xa mus rau yog"daim tawv nqaij nyias"qhov tseeb yog qhov nyias nyias ntawm cov stratum corneum. Qhov laj thawj tseem ceeb rau qhov nyias nyias ntawm cov stratum corneum yog tias cov hlwb hauv txheej basal raug puas tsuaj thiab tsis tuaj yeem faib thiab tsim dua li qub, thiab lub voj voog metabolic qub raug rhuav tshem.
Txawm hais tias VC yog acidic, cov ntsiab lus VC hauv cov tshuaj pleev ib ce tsis txaus los ua rau daim tawv nqaij raug mob. VC yuav tsis ua rau cov stratum corneum nyias dua, tab sis cov neeg uas muaj cov stratum corneum nyias dua feem ntau muaj daim tawv nqaij rhiab heev. Yog li ntawd, thaum siv cov khoom ua kom dawb uas muaj VC, koj yuav tsum sim ua ntej rau thaj chaw xws li tom qab pob ntseg kom paub seb puas muaj kev ua xua.
Tshuaj pleev ib ceyuav tsum siv rau hauv qhov nruab nrab. Yog tias koj siv lawv ntau dhau los nrhiav kev ua kom dawb, koj feem ntau yuav poob ntau dua li koj tau txais. Raws li VC, tib neeg lub cev xav tau thiab nqus VC yog txwv. VC uas ntau tshaj qhov tsim nyog ntawm tib neeg lub cev yuav tsis tsuas yog tsis nqus tau, tab sis kuj tuaj yeem ua rau raws plab thiab txawm tias cuam tshuam rau kev ua haujlwm coagulation. Yog li ntawd, cov tshuaj pleev ib ce uas muaj VC yuav tsum tsis txhob siv ntau dhau.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-15-2023
