Dab tsi yog Sunscreen zoo dua, Zinc Oxide lossis Titanium Dioxide?
Thaum xaiv cov tshuaj pleev thaiv hnub, ntau tus neeg feem ntau ntsib teeb meem: qhov twg yog qhov zoo dua rau cov tshuaj pleev thaiv hnub, zinc oxide lossis titanium dioxide? Ob qho khoom xyaw no yog cov khoom xyaw uas muaj ntau tshaj plaws hauv cov tshuaj pleev thaiv hnub lub cev, thiab lawv txhua tus muaj cov tshuaj pleev thaiv hnub tshwj xeeb thiab qhov zoo. Kab lus no yuav piv cov tshuaj pleev thaiv hnub los ntawm zinc oxide thiab titanium dioxide kom ntxaws los pab koj txiav txim siab paub ntau ntxiv thaum xaiv cov tshuaj pleev thaiv hnub.
01. Dab tsi yog zinc oxide thiab titanium dioxide?
Zinc oxide yog cov khoom siv ntxhia uas siv dav hauv cov khoom tu tawv nqaij thiab pom zoo rau nws txoj kev tiv thaiv UV. Zinc oxide tuaj yeem cuam tshuam thiab tawg cov kab hluav taws xob ultraviolet (xws li UVA thiab UVB), muab cov tshuaj tiv thaiv dav dav rau daim tawv nqaij. Tsis tas li ntawd, zinc oxide kuj muaj cov tshuaj tiv thaiv kab mob thiab cov tawv nqaij soothing, haum rau cov tawv nqaij rhiab heev.
Titanium dioxide kuj yog ib qho tshuaj pleev thaiv hnub zoo tshaj plaws, feem ntau yog siv los thaiv UVB thiab qee qhov hluav taws xob UVA. Piv nrog zinc oxide, titanium dioxide muaj cov khoom me me, yog li nws yog ib qho yooj yim los tsim ib txheej nyias thiab txawm tiv thaiv ntawm daim tawv nqaij thaum thov, txo qhov kev xav ntawm hnyav. Nws kuj tsis ua rau tawv nqaij khaus thiab haum rau txhua hom tawv nqaij.
02. Sunscreen mechanism ntawm zinc oxide thiab titanium dioxide
Ob lub zinc oxide thiab titanium dioxide yog cov tshuaj tiv thaiv lub cev uas tiv thaiv daim tawv nqaij los ntawm kev cuam tshuam thiab tawg ntawm UV rays, tsis yog tshuaj pleev thaiv hnub uas nqus UV rays thiab hloov mus rau hauv tshav kub. Qhov zoo ntawm cov tshuaj pleev thaiv hnub lub cev yog tias lawv tuaj yeem siv tau tam sim ntawd, tsis tas yuav tsum tau tos sijhawm rau kev nqus, thiab tsis ua rau tawv nqaij.
Zinc oxide muaj peev xwm tshuaj pleev thaiv hnub dav dav, npog UVA1 (340-400nm) thiab UVA2 (320-340}nm) bands nrog rau UVB (280-320}nm), yog li nws suav hais tias yog ib qho zoo heev. cov khoom siv tshuaj pleev thaiv hnub zoo. Ntawm qhov tod tes, cov tshuaj tiv thaiv tshav ntuj ntawm titanium dioxide feem ntau yog nyob rau hauv UVB band thiab tuaj yeem tsuas yog ib feem ntawm UVA2 band. Txawm li cas los xij, nws ua tau zoo hauv kev tiv thaiv UVB hluav taws xob thiab tshwj xeeb tshaj yog tsim rau kev tiv thaiv tshav ntuj.
03. Kev sib piv ntawm cov tshuaj tiv thaiv tshav ntuj
1. Muaj peev xwm tiv thaiv dav dav:
Zinc oxide muaj qhov zoo ntawm kev tiv thaiv dav dav vim tias nws tuaj yeem npog tag nrho UVA thiab UVB bands, thaum titanium dioxide kuj tsis muaj zog tiv thaiv UVA band. Yog li ntawd, yog tias koj tab tom nrhiav kev tiv thaiv UV dav, tshuaj pleev thaiv hnub uas muaj zinc oxide yuav tsim nyog dua.
2. Daim tawv nqaij adaptability:
Ob lub zinc oxide thiab titanium dioxide yog cov khoom xyaw hypoallergenic thiab haum rau txhua hom tawv nqaij, nrog rau cov tawv nqaij rhiab thiab cov me nyuam mos. Txawm li cas los xij, titanium dioxide feem ntau sib dua hauv kev ntxhib los mos thiab yooj yim rau kev thov thiab nqus, uas ua rau nws yooj yim dua rau kev siv txhua hnub.
3. Cov nyhuv tshwm sim:
Kev lig kev cai, cov tshuaj pleev thaiv hnub uas muaj zinc oxide yuav tawm hauv cov seem dawb ntawm daim tawv nqaij (feem ntau hu ua "ntse ntsej muag tsis zoo"), thaum titanium dioxide, vim nws cov khoom me me, feem ntau zoo dua tuaj yeem sib xyaw nrog cov tawv nqaij thiab txo qhov teeb meem. ntawm dawb residue. Txawm li cas los xij, nrog kev txhim kho ntawm nanotechnology, ntau cov khoom siv niaj hnub zinc oxide tshuaj pleev thaiv hnub tuaj yeem ua tiav cov xim tawv nqaij zoo dua.
Lus Nug: Cov tshuaj pleev thaiv hnub twg zoo dua?
Tsis muaj lus teb rau lo lus nug uas zoo dua ntawm zinc oxide thiab titanium dioxide. Nws nyob ntawm koj tus kheej cov tshuaj pleev thaiv hnub xav tau. Yog tias koj tsom mus rau kev tiv thaiv UV, tshwj xeeb tshaj yog tiv thaiv UVA, zinc oxide yuav yog qhov kev xaiv zoo dua. Yog tias koj nyiam cov khoom lag luam nrog lub teeb pom kev zoo thiab tsis tshua muaj qhov seem dawb, ces titanium dioxide yuav haum rau koj.
Hauv luv luv, thaum xaiv cov tshuaj pleev thaiv hnub, koj yuav tsum xav txog koj hom tawv nqaij, kev siv ib puag ncig, thiab cov tshuaj pleev thaiv hnub tshwj xeeb. Txawm hais tias nws yog zinc oxide lossis titanium dioxide, tsuav yog koj xaiv cov khoom tsim nyog rau koj thiab siv nws kom raug, nws tuaj yeem muab tshuaj pleev thaiv hnub zoo rau koj cov tawv nqaij.
