Bemotrizinol vs Avobenzone: Qhov txawv yog dab tsi?

Thaum xaiv UV Filter rau cov khoom siv tshuaj pleev thaiv hnub, nws tsis txaus los txiav txim siab tsuas yog hom UV hluav taws xob uas nws tuaj yeem thaiv. Nws ruaj khov nyob rau hauv tshav ntuj thiab nws cov kev ua tau zoo thaum ua ke nrog lwm cov ntaub ntawv raw kuj tsim nyog xav txog.

Bemotrizinol thiab Avobenzone yog cov piv txwv zoo. Ob leeg muaj kev sib raug zoo nrog kev tiv thaiv UVA, tab sis lawv txawv heev ntawm UV nqus ntau thiab photostability. Cov ntu hauv qab no yuav qhia txog qhov sib txawv no los pab xaiv cov khoom siv raw uas tsim nyog thaum tsim tshuaj pleev thaiv hnub, tshuaj pleev ib ce, thiab lwm yam khoom siv tshuaj pleev ib ce.

UV Filter Ua li cas?

UV Lim yog cov khoom xyaw tseem ceeb hauv cov khoom siv tshuaj pleev thaiv hnub. Lawv muaj peev xwm nqus tau, xav txog, los yog tawg UV hluav taws xob, txo tus nqi ntawm UV hluav taws xob mus txog ntawm daim tawv nqaij. UVA feem ntau muaj wavelengths txog 320-400 nm, thaum UVB feem ntau ntog hauv thaj tsam ntawm 280-320 nm. Cov teebmeem ntawm ob hom UV hluav taws xob ntawm daim tawv nqaij tsis zoo ib yam. UVB cuam tshuam nrog kev tshav ntuj thiab tawv nqaij liab, thaum UVA tuaj yeem nkag mus tob rau hauv daim tawv nqaij thiab tseem yog hom tseem ceeb ntawm UV hluav taws xob los xav txog hauv kev yees duab.

UV npog thiab tiv thaiv yam ntxwv

Ib qho kev sib txawv tshaj plaws ntawm Bemotrizinol thiab Avobenzone yog lawv qhov kev nqus UV.

Avobenzone, tseem hu ua Butyl Methoxydibenzoylmethane, feem ntau yog siv los tiv thaiv UVA. Nws muaj qhov nqus tau zoo nyob rau hauv qhov ntev UVA wavelengths, tshwj xeeb tshaj yog UVA -I cheeb tsam. Yog li ntawd, nws tau ntev lawm ib hom UVA lim nyob rau hauv dav -spectrum sunscreen formulations.

Txawm li cas los xij, Avobenzone nws tus kheej tsis muab kev tiv thaiv UVB tseem ceeb. Yog li ntawd, nyob rau hauv cov formulations tiag tiag, nws yog feem ntau ua ke nrog rau lwm yam UV Lim los npog ntau yam ntawm UV hluav taws xob.

Bemotrizinol muaj qhov dav dav dav thiab tuaj yeem npog ob qho tib si UVA thiab UVB. Nws qhov nqus tau txuas ntxiv kwv yees li ntawm 280 nm mus rau 380 nm, nrog lub ntsiab nqus siab siab hauv ob thaj tsam UVB thiab UVA.

Qhov no muab Bemotrizinol lub luag haujlwm sib txawv ntawm Avobenzone hauv cov tshuaj pleev thaiv hnub. Nws tuaj yeem tsis tsuas yog muab kev tiv thaiv UVA nkaus xwb tab sis kuj pab npog thaj tsam UVB.

Vim tias lawv qhov nqus nqus tau sib txawv, lawv kuj ua lub luag haujlwm sib txawv hauv cov qauv. Hauv cov khoom uas xav tau kev tiv thaiv UV ntau dua, ob qho tib si kuj tuaj yeem ua ke nrog lwm cov lim UV.

Photostability: Qhov txawv tseem ceeb

Photostability yog ib qho ntawm qhov sib txawv tseem ceeb ntawm Bemotrizinol thiab Avobenzone.

Cov khoom xyaw tshuaj pleev thaiv hnub tsis tu ncua raug UV hluav taws xob thaum siv. Yog tias cov khoom muaj qhov cuam tshuam loj heev nyob rau hauv qhov raug UV, nws lub peev xwm nqus tau kuj hloov pauv. Yog li ntawd, photostability yog ib qho tseem ceeb los xav txog thaum ntsuas qhov ua tau zoo ntawm UV Lim.

Ib tus yam ntxwv zoo ntawm Avobenzone yog nws cov duab tsis tshua muaj tshwm sim. Thaum raug UV hluav taws xob, nws cov qauv molecular yuav hloov, ua rau txo qis ntawm UVA nqus. Cov kev tshawb fawb cuam tshuam kuj tau pom qhov tseem ceeb photodegradation ntawm Avobenzone nyob rau hauv UV raug.

Txawm li cas los xij, qhov no tsis tau txhais hais tias Avobenzone tsis tuaj yeem siv tau zoo hauv cov khoom siv tshuaj pleev thaiv hnub. Qhov tseeb, nws tau siv rau hauv cov tshuaj pleev thaiv hnub rau ntau xyoo. Tus yuam sij yog coj nws cov photostability rau hauv tus account thiab tswj nws cov kev ua tau zoo los ntawm kev tsim qauv tsim nyog.

Bemotrizinol, ntawm qhov tod tes, muaj qhov zoo ntawm photostability. Nyob rau hauv UV raug, nws tuaj yeem tswj hwm nws cov khoom qub UV nqus. Piv nrog Avobenzone, Bemotrizinol qhia tau hais tias zoo dua photostability, uas kuj yog ib qho ntawm cov laj thawj nws tau nyiam cov tshuaj pleev thaiv hnub niaj hnub thiab cov tshuaj pleev ib ce.

Formulation Stability

Photostability thiab formulation stability yog zoo sib xws, tab sis lawv tsis raws nraim tib lub tswvyim.

Rau Avobenzone, nws tseem yuav tsum tau txiav txim siab uas lwm cov khoom xyaw hauv kev tsim tuaj yeem pab tswj nws txoj kev ruaj ntseg. Octocrylene thiab lwm yam UV Lim tau siv rau hauv cov qauv tsim los txhim kho kev ruaj ntseg ntawm Avobenzone nyob rau hauv UV raug. Cov khoom sib txawv ruaj khov thiab kev sib xyaw ua ke kuj tau ua kom pom tseeb hauv kev tshawb fawb tshuaj pleev thaiv hnub.

Yog li ntawd, kev ua tau zoo ntawm cov tshuaj pleev thaiv hnub uas muaj Avobenzone tsis yog nyob ntawm Avobenzone raw khoom nws tus kheej, tab sis kuj muaj feem xyuam rau tag nrho cov txheej txheem tsim.

Bemotrizinol muaj qee qhov zoo hauv qhov kev hwm no vim nws qhov zoo ntawm photostability. Hauv qee qhov kev sib txuas, nws tseem tuaj yeem pab txhim kho cov duab zoo ntawm lwm yam UV Lim. Piv txwv li, qee qhov kev tshawb fawb tau pom tias nyob rau hauv cov qauv tsim tshwj xeeb, Bemotrizinol tuaj yeem txhim kho kev ruaj ntseg ntawm Avobenzone nyob rau hauv UV raug.

Xaus

Bemotrizinol thiab Avobenzone tuaj yeem siv tau rau hauv cov tshuaj pleev thaiv hnub, tab sis lawv muaj cov yam ntxwv sib txawv.

Avobenzone muaj qhov zoo dua qub hauv kev tiv thaiv UVA, tshwj xeeb tshaj yog rau kev npog UVA ntev dua -I cheeb tsam. Nws qhov kev sib tw tseem ceeb hauv cov qauv yog photostability, yog li nws feem ntau ua ke nrog lwm cov khoom xyaw los pab tswj nws cov kev ua tau zoo thaum siv.

Bemotrizinol muaj qhov dav dav UV nqus ntau thiab muaj qhov zoo ntawm cov duab zoo. Nws tuaj yeem ua lub luag haujlwm sib txawv ntawm Avobenzone hauv cov tshuaj pleev thaiv hnub thiab cov khoom tu tawv nqaij, tshwj xeeb tshaj yog nyob rau hauv cov qauv uas xav tau kom sib npaug dav -spectrum UV kev pab them nqi thiab kev ruaj ntseg.

Yog li ntawd, rau cov tuam txhab xaiv UV Filter raw cov ntaub ntawv, kev xaiv yuav tsum yog raws li UV ntau yam uas cov khoom xav tau los npog, kev sib xyaw ua ke ntawm lwm yam UV Lim, kev ruaj ntseg yuav tsum tau ua, thiab tag nrho cov kev ua tau zoo ntawm cov khoom ua kom zoo nkauj tiav.

Cov ntaub ntawv siv thiab txhawb nqa

[1] National Academies of Sciences, Engineering, thiab Tshuaj. (2022). Taw qhia rau Sunscreens thiab lawv cov lim UV.NCBI Bookshelf.

[2] Latha MS, Martis J, Shobha V, Sham Shinde R, Bangera S, Krishnankutty B, Bellary S, Varughese S, Rao P, Naveen Kumar BR.(2013). Sunscreening agents: kev tshuaj xyuas. J Clin Aesthet Dermatol.

[3] Uni- hmoov. Sab saum toj 10 UV lim cov khoom xyaw uas koj xav tau rau kev tiv thaiv tshav ntuj. Uni- hmoov.