Cov tshuaj pleev thaiv hnub ua haujlwm li cas?

Txhua leej txhua tus paub tias kev siv tshuaj pleev thaiv hnub txhua hnub yog ib txoj hauv kev zoo los tiv thaiv koj cov tawv nqaij los ntawm teeb meem UV rays. Peb mob siab rau siv dav dav SPF txhua txhua tag kis sawv ntxov-thiab rov ua dua txhua ob teev hauv ib hnub-kom tiv thaiv tshav ntuj. Qhov kev xyaum no tuaj yeem pab txo koj txoj hauv kev pom cov cim ntawm daim tawv nqaij laus. Tab sis nyob rau hauv nruab nrab ntawm cov kev siv niaj hnub no, koj puas tau xav tias tshuaj pleev thaiv hnub tiv thaiv koj cov tawv nqaij li cas? Tom qab tag nrho, tshuaj pleev thaiv hnub yog ib qho tseem ceeb ntawm txhua yam kev tu tawv nqaij. Peb yuav tsum tsawg kawg yog paub txog cov khoom ua haujlwm li cas, txoj cai? Txog qhov kawg, peb muab cov lus teb rau koj cov lus nug kub kub txog tshuaj pleev thaiv hnub!

SUN CREAM ua haujlwm li cas?

Unsurprisingly, cov lus teb muaj ntau heev ua nrog cov muaj pes tsawg leeg ntawm cov khoom noj. Cias muab, tshuaj pleev thaiv hnub ua haujlwm los ntawm kev sib txuas cov khoom xyaw organic thiab inorganic uas tsim los tiv thaiv koj cov tawv nqaij. Cov tshuaj pleev thaiv hnub lub cev feem ntau yog tsim los ntawm cov khoom siv tsis muaj zog, xws li zinc oxide lossis titanium oxide, uas zaum ntawm koj cov tawv nqaij thiab pab cuam tshuam lossis tawg tawg. Cov tshuaj pleev thaiv hnub tshuaj lom neeg feem ntau yog tsim los ntawm cov khoom xyaw organic xws li octocrylene lossis avobenzone uas pab nqus UV hluav taws xob ntawm daim tawv nqaij, hloov cov hluav taws xob UV absorbed rau hauv tshav kub, thiab tom qab ntawd tso cov cua sov ntawm daim tawv nqaij. Kuj tseem muaj qee cov tshuaj pleev thaiv hnub uas tau muab cais ua lub cev thiab tshuaj pleev thaiv hnub raws li lawv qhov muaj pes tsawg leeg. Thaum xaiv cov tshuaj pleev thaiv hnub, nrhiav cov mis uas tsis muaj dej thiab muaj kev tiv thaiv dav dav, txhais tau tias nws tiv thaiv UVA thiab UVB rays.

Yog xav paub ntxiv txog qhov sib txawv ntawm lub cev thiab tshuaj pleev thaiv hnub, nyeem qhov no!

Dab tsi yog qhov sib txawv ntawm UVA thiab UVB rays?

Txog tam sim no, tej zaum koj yuav paub tias ob qho tib si UVA thiab UVB rays yog teeb meem. Qhov sib txawv tseem ceeb ntawm ob yog UVA rays, uas tsis tau nqus tag nrho los ntawm ozone, zoo li nkag mus tob rau hauv daim tawv nqaij dua li UVB rays thiab tuaj yeem ua rau koj cov tawv nqaij zoo li qub, ua rau pom wrinkles thiab hnub nyoog me ntsis. UVB rays, uas yog ib feem thaiv los ntawm ozone txheej, feem ntau yog lub luag hauj lwm rau sunburn ncua thiab hlawv.

Koj puas paub tias muaj peb hom hluav taws xob hu ua UV rays? Txij li UV rays tau lim tag nrho los ntawm huab cua thiab tsis ncav cuag lub ntiaj teb saum npoo, lawv feem ntau tsis sib tham dav.

SPF yog dab tsi?

SPF, lossis hnub tiv thaiv qhov tseem ceeb, yog ib qho kev ntsuas ntawm lub hnub ci lub peev xwm los tiv thaiv UVB rays los ntawm kev puas tsuaj ntawm daim tawv nqaij. Piv txwv li, yog tias daim tawv nqaij tsis muaj kev tiv thaiv pib liab tom qab 20 feeb, siv cov tshuaj pleev thaiv hnub SPF 15 yuav tsum theoretically tiv thaiv reddening rau 15 npaug ntev dua li cov tawv nqaij tsis tiv thaiv, xws li txog tsib teev. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias SPF tsuas yog ntsuas UVB rays, uas kub hnyiab ntawm daim tawv nqaij, thiab tsis yog UVA rays, uas kuj muaj teeb meem. Txhawm rau tiv thaiv ob qho tib si, siv cov tshuaj pleev thaiv hnub dav dav thiab ua lwm yam kev tiv thaiv hnub ci.

Editor's note: Tsis muaj tshuaj pleev thaiv hnub uas tuaj yeem thaiv tag nrho cov rays UV. Ntxiv rau cov tshuaj pleev thaiv hnub, nco ntsoov ua raws li lwm yam kev tiv thaiv kev nyab xeeb xws li hnav khaub ncaws tiv thaiv, nrhiav kev ntxoov ntxoo, thiab zam lub hnub ci siab tshaj.

Puas yog SUN CREAM tawm los?

Raws li Mayo Clinic, feem ntau cov tshuaj pleev thaiv hnub yog tsim los ua kom lawv lub zog qub mus txog peb xyoos. Yog tias koj cov tshuaj pleev thaiv hnub tsis muaj hnub tas sijhawm, nws yog ib lub tswv yim zoo los sau hnub yuav khoom ntawm lub raj mis thiab muab pov tseg tom qab peb xyoos. Txoj cai no yuav tsum tau ua raws li ib txwm, tshwj tsis yog tias cov tshuaj pleev thaiv hnub khaws cia tsis raug, uas tuaj yeem ua rau lub neej ntev ntawm cov mis. Yog tias muaj, nws yuav tsum muab pov tseg thiab hloov nrog cov khoom tshiab sai dua. Ua tib zoo saib xyuas txhua qhov kev hloov pauv hauv cov xim lossis qhov sib xws ntawm cov tshuaj pleev thaiv hnub. Yog tias ib yam dab tsi zoo li xav tsis thoob, muab pov tseg rau lwm tus.

Editor's note: Luam theej duab koj cov tshuaj pleev thaiv hnub ntim rau hnub tas sij hawm, raws li feem ntau yuav tsum suav nrog lawv. Yog tias koj pom nws, siv hnub tas sij hawm ntawm lub raj mis / raj raws li cov lus qhia ntev npaum li cas cov qauv siv tau ua ntej nws tsis ua haujlwm.

YUAV UA LI CAS YUAV TSUM SUN CREAM?

Yog tias ib lub raj mis tshuaj pleev thaiv hnub kav ntev rau koj rau xyoo, muaj feem yuav yog koj tsis siv tus nqi pom zoo. Feem ntau, daim ntawv thov tshuaj pleev thaiv hnub zoo yog txog ib ooj - txaus los sau cov iav txhaj tshuaj - los npog qhov chaw ntawm lub cev. Nyob ntawm koj lub cev qhov loj me, qhov nyiaj no yuav hloov pauv. Nco ntsoov rov muab cov tshuaj pleev thaiv hnub zoo ib yam tsawg kawg txhua ob teev. Yog tias koj mus ua luam dej, tawm hws ntau los yog phuam qhuav, rov ua dua tam sim ntawd.

Puas muaj txoj hauv kev nyab xeeb rau TANN?

Txawm hais tias tej zaum koj yuav tau hnov ​​​​txog, tsis muaj txoj hauv kev nyab xeeb rau hnub da dej. Txhua zaus koj raug UV hluav taws xob - los ntawm lub hnub lossis los ntawm cov khoom tsim xws li lub txaj tanning thiab lub hnub ci - koj ua rau koj cov tawv nqaij puas. Nws yuav zoo li tsis muaj teeb meem thaum xub thawj, tab sis raws li qhov kev puas tsuaj no tsim, nws tuaj yeem ua rau tawv nqaij laus ntxov thiab ua rau muaj kev pheej hmoo ntawm daim tawv nqaij puas.