Raws li paub, qhov kev txiav txim ntawm tshav ntuj pab txhawb tsis tas rau ib qho kev lom zem ziab thiab saturation ntawm lub cev nrog vitamin D, tab sis kuj yuav ua mob rau peb kev noj qab haus huv. Feem ntau ntawm tag nrho cov los ntawm ultraviolet rays peb cov tawv nqaij suffers, nyob rau hauv tus ntawm uas nws yog overdried, pigment me ntsis, moles, eritemas, wrinkles thiab txawm cancerous kev tsim yog tsim rau nws. Yog li ntawd, ib qho tseem ceeb tshaj plaws rau kev tu tawv nqaij, tshwj xeeb tshaj yog nyob rau hauv lub caij sov, thaum lub hnub feem ntau kom nquag plias, yog tshuaj pleev thaiv hnub.
Yuav ua li cas xaiv tshuaj pleev thaiv hnub?
Qhov feem ntau yooj yim rau kev txiav txim ntawm tshav ntuj yog daim tawv nqaij ntawm lub ntsej muag, yog li ua ntej ntawm txhua yam koj yuav tsum tau muab kev tiv thaiv rau nws. Tshuaj pleev thaiv hnub muab kev tiv thaiv ntawm daim tawv nqaij los ntawm teeb meem UV hluav taws xob, txhawb nqa cov dej ntws tawm hauv nws, tiv thaiv kev laus thiab ua haujlwm ua kev tiv thaiv mob cancer ntawm daim tawv nqaij . Niaj hnub nimno sunscreens tuaj yeem raug siv los ua qhov chaw pib, uas yog yooj yim thiab siv tau.
UV hluav taws xob, cuam tshuam rau ntawm daim tawv nqaij, muab faib ua ob hom:
- UVA rays - ua rau tawv nqaij laus, muaj peev xwm ua kom puas plab hlaub thiab elastin, txav mus rau hauv kev txawm los ntawm nyias cov khaub ncaws thiab iav.
- UVB rays - ua rau liab liab, kub hnyiab thiab malignant hlav, tsis tuaj yeem nkag mus hauv khob thiab khaub ncaws.
Cov nyhuv ntawm UVB rays yuav hnov li cas tam sim ntawd tom qab qhib lub hnub ua liab, voos thiab kub hnyiab, thiab UVA hluav taws xob ua rau cov nyhuv loj, thiab qhov tsis zoo tshwm sim tuaj yeem pom tom qab qee cov tawv nqaij (cov tawv nqaij, xim nqaij, thiab lwm yam).
Thaum xaiv ib lub tshuaj pleev thaiv hnub, ua ntej txhua yam, koj yuav tsum tsom ntsoov rau theem ntawm nws qhov kev tiv thaiv kev tiv thaiv. Raws li txoj cai, nws tau qhia rau lub ntim ntawm kev khwv los ntawm tsab ntawv SPF thiab tus lej. Qhov ntau dua tus naj npawb, qhov siab zog ntawm kev tiv thaiv. Cov pojniam hnyav uas muaj tawv nqaij tawv, uas kub hnyiab hauv lub hnub, nws pom zoo kom siv cov tshuaj pleev thaiv hnub uas muaj kev tiv thaiv siab tshaj plaws - SPF 40-50 (hnub tshuaj muaj SPF 100 tsis muaj nyob). Cov neeg uas muaj cov tawv nqaij tsaus, nws tseem txaus siv cov tshuaj pleev thaiv hnub nrog SPF 15-30.
Txawm li cas los xij, SPF-Performance Index qhia tau tias tshuav tus nplaum twg tsuas yog los ntawm UVB hluav taws xob, thiab nws tsis yooj yim dua los ntsuam xyuas kev tiv thaiv los ntawm UVA rays. Rau qhov no, txoj kev sib txawv ntawm txoj kev txhais tau raug siv nrog lawv cov cim:
- IPD - qhov siab tshaj plaws yog 90, thiab qhov no qhia tau hais tias daim tawv nqaij yog raug tiv thaiv los ntawm UVA-rays los ntawm 90%.
- PPD - ntawm no qhov ntsuas siab tshaj plaws yog 42, thiab qhov no txhais tau hais tias daim tawv nqaij ncaug 42% feem ntau ntawm cov hom kab mob no.
- PA - qhov kev tiv thaiv zoo, uas yog qhia los ntawm cov cim "+", "++" thiab "+++".
Yog tias nyob hauv lub hnub yog txuam nrog da dej, nws yog ntshaw kom xaiv tau ib qho kev siv nrog cov dej ua kom nrawm. Thaum lub tawv nqaij qhuav thiab tawv nqaij tawv zoo dua los siv cov tshuaj pleev thaiv hnub nrog cov tshuaj ntsuab thiab cov vitamins.
Nws yog tsim nyog xav tias txhua lub hnub ci tshuaj tsuas yog thawj thawj ob peb teev tom qab daim ntawv thov. Yog li ntawd, lub khob ci yuav tsum tau ua dua txhua ob xuab moos, thiab thaum da dej thiab tawm hws nws yog ntau dua.
Cov tshuaj thaiv hnub twg zoo dua?
Koj tuaj yeem xaiv qhov zoo tshaj plaws tshuaj pleev thaiv hnub, xaiv cov tawv nqaij ntu thiab lub sijhawm siv lub hnub. Raws li rau hom ntawm cov khoom, cov nram qab no lub tuam txhab muaj pov thawj lawv tus kheej yuav tsum zoo thiab zoo tshuaj hnub ci manufacturers:
- Clinique (TEB CHAWS USA);
- Mirra (Russia);
- Avene (Fabkis);
- Vichy (Fabkis);
- Oriflame (Sweden);
- Ntxuav kab (Russia);
- Nivea (Yelemees);
- Dawb Huv Av (Ixayees);
- L'Oreal (Fabkis);
- SkinTech (Spain) thiab lwm tus.