Mwasankha kuti kugwiritsa ntchito sunscreen yachilengedwe ndi chisankho choyenera kwa inu. Mwina mukuwona kuti ndi chisankho chabwino kwa inu ndi chilengedwe, kapena zoteteza ku dzuwa zokhala ndi zopangira zopangira zimakwiyitsa khungu lanu.
Kenako mumamva za "nanoparticles" m'mafuta ena achilengedwe a dzuwa, pamodzi ndi zina zowopsa komanso zotsutsana za tinthu tating'onoting'ono tomwe timapuma. Mozama, kodi kusankha zoteteza ku dzuwa kuyenera kukhala kosokoneza chonchi?
Ndizidziwitso zambiri kunja uko, zitha kuwoneka ngati zolemetsa. Kotero, tiyeni tidutse phokosolo ndikuyang'ana mopanda tsankho pa nanoparticles mu sunscreen, chitetezo chawo, zifukwa zomwe mudzazifunira mu sunscreen yanu komanso pamene simungatero.
Kodi Nanoparticles Ndi Chiyani?
Nanoparticles ndi tinthu tating'onoting'ono kwambiri ta chinthu chopatsidwa. Nanoparticles ndi ochepera 100 nanometers wandiweyani. Kuti tipereke malingaliro, nanometer ndi yaying'ono nthawi 1000 kuposa makulidwe a chingwe chimodzi chatsitsi.
Ngakhale ma nanoparticles amatha kupangidwa mwachilengedwe, monga madontho ochepa amadzi am'madzi mwachitsanzo, ma nanoparticles ambiri amapangidwa mu labu. Kwa dzuwa, ma nanoparticles omwe akufunsidwa ndi zinc oxide ndi titanium dioxide. Zosakaniza izi zimaphwanyidwa kukhala tinthu tating'onoting'ono kwambiri tisanawonjezedwe padzuwa lanu.
Nanoparticles adayamba kupezeka muzopaka dzuwa m'zaka za m'ma 1980, koma sanagwirebe mpaka 1990s. Masiku ano, mutha kuganiza kuti zoteteza ku dzuwa zomwe zili ndi zinc oxide ndi/kapena titaniyamu woipa ndi tinthu tating'onoting'ono tomwe timapanga ngati tafotokozera mwanjira ina.
Mawu akuti "nano" ndi "micronized" ndi ofanana. Choncho, zodzitetezera ku dzuwa zokhala ndi "micronized zinc oxide" kapena "micronized titanium dioxide" zimakhala ndi nanoparticles.
Nanoparticles samangopezeka muzoteteza ku dzuwa. Zinthu zambiri zosamalira khungu ndi zodzikongoletsera, monga maziko, ma shampoos, ndi mankhwala otsukira mano, nthawi zambiri amakhala ndi zosakaniza zazing'ono. Nanoparticles amagwiritsidwanso ntchito mu zamagetsi, nsalu, magalasi osayamba kukanda, ndi zina zambiri.
Nanoparticles Sungani Zowonetsera Zachilengedwe Zakudzuwa Kuti Musachoke Kanema Woyera Pa Khungu Lanu
Posankha zoteteza zachilengedwe za dzuwa, muli ndi njira ziwiri; omwe ali ndi nanoparticles ndi omwe alibe. Kusiyana pakati pa ziwirizi kudzawonekera pakhungu lanu.
Onse titanium dioxide ndi zinc oxide amavomerezedwa ndi FDA ngati zosakaniza zachilengedwe zoteteza dzuwa. Iliyonse imapereka chitetezo chochuluka cha UV, ngakhale kuti titanium dioxide imagwira ntchito bwino ikaphatikizidwa ndi zinc oxide kapena chinthu china chopangira sunscreen.
Zinc oxide ndi titanium dioxide zimagwira ntchito powonetsa kuwala kwa UV kutali ndi khungu, kuteteza khungu ku dzuwa. Ndipo ndi othandiza kwambiri.
Mu mawonekedwe awo okhazikika, osakhala a nano, zinc oxide ndi titanium dioxide ndi zoyera kwambiri. Akaphatikizidwa mu sunscreen, amasiya filimu yoyera yowoneka bwino pakhungu. Ganizirani za msilikali wodzitetezera yemwe ali ndi zoyera kudutsa mlatho wa mphuno - inde, ndiye zinc oxide.
Lowani nanoparticles. Mafuta oteteza ku dzuwa opangidwa ndi micronized zinc oxide ndi titaniyamu woipa amapaka pakhungu bwino kwambiri, ndipo sangasiye kukongola. Ma nanoparticles abwino kwambiri amapangitsa kuti zoteteza ku dzuwa zisakhale zowoneka bwino koma zogwira mtima.
Kafukufuku Wambiri Wambiri Amapeza Nanoparticles mu Sunscreen Safe
Kuchokera pazomwe tikudziwa tsopano, sizikuwoneka kuti nanoparticles ya zinc oxide kapena titaniyamu woipa ndi yovulaza mwanjira iliyonse. Komabe, zotsatira za nthawi yayitali zogwiritsira ntchito micronized zinc oxide ndi titaniyamu dioxide, ndizosamvetsetseka. Mwa kuyankhula kwina, palibe umboni wosonyeza kuti kugwiritsa ntchito nthawi yayitali ndikotetezeka, koma palibe umboni kuti ndizovulaza.
Ena amakayikira chitetezo cha tinthu tating'onoting'ono tokhala ndi ma micron. Chifukwa chakuti ndi ang’onoang’ono, amatha kutengeka ndi khungu komanso m’thupi. Zomwe zimayamwa komanso momwe zimalowera mozama zimatengera momwe tinthu tating'onoting'ono ta zinc oxide kapena titanium dioxide, komanso momwe zimaperekedwa.
Kukankha, chimachitika ndi chiyani m'thupi lanu ngati zinc oxide kapena titanium dioxide nano-particles atengedwa? Tsoka ilo, palibe yankho lomveka bwino la izi, mwina.
Pali malingaliro akuti atha kupsinjika ndi kuwononga maselo amthupi lathu, zomwe zimachulukitsa kukalamba mkati ndi kunja. Koma kafukufuku wochulukirapo akuyenera kuchitidwa kuti adziwe bwino njira imodzi kapena imzake.
Titanium dioxide, ikakhala mu mawonekedwe ake a ufa ndikupumira, yawonetsedwa kuti imayambitsa khansa ya m'mapapo mu makoswe a labu. Titanium dioxide ya micronized imalowanso pakhungu mozama kwambiri kuposa micronized zinc oxide, ndipo titanium dioxide imadutsa mu placenta ndikutseka chotchinga chamagazi ndi ubongo.
Komabe, kumbukirani kuti zambiri mwazomwezi zimachokera ku kudya titanium dioxide (popeza imapezeka muzakudya zambiri zosungidwa kale ndi maswiti). Kuchokera pamaphunziro ambiri a titaniyamu woipa wa titaniyamu ndi zinc oxide, nthawi zina ndizopezeka pakhungu, ndipo ngakhale pamenepo zinali zotsika kwambiri.
Izi zikutanthauza kuti ngakhale mutapaka zodzitetezera ku dzuwa zomwe zili ndi nanoparticles, sizingatenge ngakhale kupitirira khungu loyamba. Kuchuluka komwe kumatengedwa kumasiyanasiyana malinga ndi kapangidwe ka mafuta oteteza ku dzuwa, ndipo zambiri sizimayamwa mozama ngati zili choncho.
Ndizidziwitso zomwe tili nazo pakali pano, zoteteza dzuwa zomwe zili ndi nanoparticles zikuwoneka kuti ndizotetezeka komanso zothandiza kwambiri. Zosamveka bwino ndi momwe kugwiritsa ntchito kwanthawi yayitali kungakhudzire thanzi lanu, makamaka ngati mukugwiritsa ntchito mankhwalawa tsiku lililonse. Apanso, palibe umboni kuti kugwiritsa ntchito kwanthawi yayitali kwa micronized zinc oxide kapena titaniyamu woipa kumakhala kovulaza, sitikudziwa momwe zimakhudzira (ngati zilipo) pakhungu kapena thupi lanu.
Mawu Ochokera kwa Verywell
Choyamba, kumbukirani kuti kuvala zoteteza ku dzuwa tsiku lililonse ndi chimodzi mwazinthu zabwino kwambiri zomwe mungachite kuti mukhale ndi thanzi lalitali la khungu lanu (ndiponso ndi njira yabwino kwambiri yoletsa kukalamba). Chifukwa chake, zikomo kwa inu chifukwa chochita changu poteteza khungu lanu!
Pali ma sunscreens ambiri achilengedwe omwe amapezeka, onse a nano komanso omwe si a nano, pali zopangira zanu. Kugwiritsa ntchito mafuta oteteza ku dzuwa okhala ndi micronized (AKA nano-particle) zinc oxide kapena titanium dioxide kukupatsani chinthu chomwe sichimaphatikizika komanso chopaka mokwanira.
Ngati mukuda nkhawa ndi nano-particles, kugwiritsa ntchito sunscreen yopanda ma micronized kukupatsani tinthu tating'onoting'ono tomwe sitingatengeke ndi khungu lanu. Kusinthanitsa ndikuti mudzawona filimu yoyera pakhungu lanu mutagwiritsa ntchito.
Njira ina ngati mukuda nkhawa ndi kupewa zinthu zonse za titanium dioxide, popeza izi ndizomwe zalumikizidwa ndi zovuta zomwe zingachitike. Kumbukirani, komabe, kuti ambiri mwa mavutowa anali kuchokera pakukoka kapena kumeza titanium dioxide nanoparticles, osati chifukwa cha kuyamwa khungu.
Zoteteza zachilengedwe za dzuwa, zonse zokhala ndi micronized komanso osati, zimasiyana kwambiri pakukhazikika komanso kumva pakhungu. Chifukwa chake, ngati mtundu wina suli wokonda, yesani ina mpaka mutapeza yomwe imakuthandizani.
Nthawi yotumiza: Jul-12-2023