Peb qhia tias kev tiv thaiv hnub yog ib txoj hauv kev zoo tshaj plaws los tiv thaiv koj daim tawv nqaij kom tsis txhob laus ua ntej lub sijhawm thiab yuav tsum yog koj txoj kev tiv thaiv ua ntej peb yuav cov khoom siv tawv nqaij uas nyuaj dua. Tab sis cov neeg siv khoom hais tias lawv tsis siv tshuaj pleev thaiv hnub vim lawv muaj kev txhawj xeeb txog kev nyab xeeb txog cov khoom xyaw hauv cov khoom tiv thaiv hnub.
Yog tias koj tsis paub meej, nyeem ntxiv kom paub qhov txawv ntawm cov tshuaj pleev thaiv hnub uas yog tshuaj lom neeg thiab cov tshuaj pleev thaiv hnub uas yog lub cev (mineral) thiab vim li cas peb thiaj xav tias cov tshuaj pleev thaiv hnub uas yog cov tshuaj mineral yog qhov zoo tshaj plaws rau koj cov tawv nqaij.
Tiam sis ua ntej, nws yog ib qho tseem ceeb kom piav qhia meej txog lo lus tshuaj lom neeg vim tias qee zaum yuav muaj kev nkag siab yuam kev tias txhua yam tshuaj lom neeg muaj teeb meem. Txawm li cas los xij, peb, thiab txhua yam nyob ib puag ncig peb yog ua los ntawm cov tshuaj lom neeg, txawm tias dej kuj yog ib yam tshuaj lom neeg piv txwv li, yog li tsis muaj dab tsi uas tuaj yeem suav tias tsis muaj tshuaj lom neeg. Qhov twg muaj kev ntshai txog cov khoom xyaw rau kev saib xyuas tawv nqaij, qhov no feem ntau cuam tshuam nrog qee yam uas ua los ntawm cov tshuaj lom neeg muaj teeb meem. Hauv qhov no, peb yuav siv cov lus, 'tsis muaj tshuaj lom' thaum hais txog cov khoom uas feem ntau lees txais tias muaj kev nyab xeeb rau kev siv.
Tshuaj pleev thaiv hnub yog dab tsi?
Cov tshuaj pleev thaiv hnub ua haujlwm los ntawm kev nqus mus rau hauv daim tawv nqaij thiab thaum cov hluav taws xob UV kov cov tshuaj pleev thaiv hnub, qhov kev ua haujlwm tshwm sim uas tshem tawm cov hluav taws xob UV ua ntej ua rau koj daim tawv nqaij puas tsuaj. Lawv hu ua tshuaj lom neeg, vim tias muaj kev ua haujlwm tshuaj lom neeg tshwm sim los muab kev tiv thaiv lub hnub.
Cov khoom xyaw uas siv ntau tshaj plaws yog oxybenzone, avobenzone, thiab octinoxate thiab txawm hais tias lawv lub npe nyuaj rau hais, cov khoom xyaw no ua haujlwm zoo li lub paj rwb los nqus cov teeb meem ultraviolet.
Tshuaj pleev thaiv hnub mineral yog dab tsi?
Cov tshuaj pleev thaiv hnub uas muaj cov mineral thiab cov tshuaj pleev thaiv hnub uas muaj lub cev yog ib yam thiab lawv nyob rau saum daim tawv nqaij thiab ua haujlwm ua ib qho thaiv lub cev tiv thaiv lub hnub lub zog. Cov tshuaj pleev thaiv hnub uas muaj lub cev siv ob yam khoom xyaw tseem ceeb - zinc oxide thiab titanium dioxide - thiab feem ntau muaj cov khoom xyaw tsawg dua li cov tshuaj pleev thaiv hnub uas muaj tshuaj lom neeg.
Yuav ua li cas thiaj paub tias tshuaj pleev thaiv hnub yog mineral los yog chemical?
Koj tuaj yeem qhia tau tias koj siv hom tshuaj pleev thaiv hnub twg los ntawm kev tig lub raj mis lossis lub thawv thiab xyuas cov npe INCI (cov khoom xyaw) nyob rau sab nraum qab ntawm lub ntim kom paub seb puas muaj cov khoom xyaw nquag.
Vim li cas ho xaiv cov tshuaj pleev thaiv hnub uas muaj cov mineral?
Raws li peb tau hais los saum toj no, qee tus neeg muaj kev txhawj xeeb txog kev nyab xeeb ntawm cov khoom xyaw lom hauv cov tshuaj pleev thaiv hnub thiab yog li ntawd nyiam siv cov tshuaj mineral SPFs vim tias lawv nyob rau saum daim tawv nqaij es tsis txhob nqus mus rau hauv nws. Tsis txhob txhawj txog cov khoom xyaw, cov tawv nqaij rhiab heev, lossis cov neeg uas ua xua rau qee cov tshuaj pleev thaiv hnub lossis cov neeg mob pob txuv kuj tseem yuav nyiam cov khoom xyaw mos mos hauv cov tshuaj pleev thaiv hnub thiab cov npe khoom xyaw luv dua.
Ces muaj kev siv tau yooj yim. Yog tias koj xav tawm mus ncig txhua lub caij nyoog, koj yuav nyiam cov tshuaj pleev thaiv hnub uas muaj cov mineral vim tias, tsis zoo li cov tshuaj pleev thaiv hnub uas muaj tshuaj lom neeg, uas yuav tsum tau nqus tag nrho rau hauv daim tawv nqaij ua ntej lawv ua haujlwm (siv sijhawm ntau tshaj 15 feeb), cov tshuaj pleev thaiv hnub uas muaj cov mineral yuav ua haujlwm tau sai li sai tau thaum lawv siv.
Cov txiaj ntsig ntawm cov tshuaj pleev thaiv hnub mineral
Tsis yooj yim dej thaum siv rau ntawm daim tawv nqaij - nrog rau cov tshuaj pleev thaiv hnub uas muaj tshuaj lom neeg lossis cov tshuaj minerals koj yuav tsum tau rov siv dua thaum tawm hauv pas dej lossis hiav txwv
Kev tiv thaiv UVA thiab UVB - zinc oxide, cov khoom xyaw nquag hauv cov tshuaj pleev thaiv hnub mineral, yog photostable heev yog li nws muab kev tiv thaiv UVA thiab UVB zoo heev vim nws yuav tsis poob nws lub zog tiv thaiv thaum raug lub teeb UV. Qhov no yog qhov tseem ceeb rau kev tiv thaiv kev laus ua ntej thiab teeb meem kev noj qab haus huv ntawm daim tawv nqaij. Titanium dioxide muab kev tiv thaiv UVA tsawg dua me ntsis yog li koj yuav pom zinc oxide feem ntau ntawm cov npe khoom xyaw rau cov tshuaj pleev thaiv hnub mineral.
Muaj kev nyab xeeb rau cov pob zeb hauv dej thiab zoo rau ib puag ncig - cov khoom xyaw tseem ceeb hauv feem ntau cov tshuaj pleev thaiv hnub tuaj yeem ua rau muaj kev phom sij rau cov tsiaj txhu hauv dej hiav txwv thiab cov pob zeb hauv dej hiav txwv thaum cov khoom xyaw tseem ceeb ntawm cov tshuaj pleev thaiv hnub feem ntau xav tias zoo rau ib puag ncig thiab yuav tsis ua rau cov pob zeb dawb lossis cuam tshuam rau cov tsiaj txhu hauv dej hiav txwv.
Zinc oxide muaj ntau yam txiaj ntsig rau kev noj qab haus huv - Nws tuaj yeem ua rau koj tsis khaus (zoo tagnrho yog tias koj tau raug kub hnyiab me ntsis), yuav tsis txhaws qhov hws vim nws tsis yog comedogenic thiab nws cov tshuaj tua kab mob, tiv thaiv kev o tuaj yeem khaws cov tawv nqaij elasticity, qhov zoo li ntawm wrinkles thiab pab tawm tsam pob txuv.
Peb vam tias cov blog no tau muaj txiaj ntsig zoo thiab pab koj nkag siab txog qhov sib txawv ntawm cov khoom tiv thaiv hnub sib txawv uas muaj nyob rau ntawd.
Lub sijhawm tshaj tawm: Lub Rau Hli-13-2024