Kodi Mafuta Oteteza Kudzuwa Achilengedwe Amakhala Otsutsana ndi Zovala Zodzitetezera Padzuwa Nthawi Zonse?

Zamkati

• Kodi mu Mineral Formula ndi Chiyani?
• Vuto ndi Chemical Blockers
• Ndiye Kodi Ma Cream Onse Otengera Mchere Ndi Bwino?
• Zoyenera Kuyang'ana
• Onaninso za

M'nthawi yotentha, funso lokhalo lofunika kwambiri kuposa "Njira yopita kunyanja?" ndi "Kodi wina wabweretsa sunscreen?" Khansa yapakhungu si nthabwala: Mitengo ya khansa yapakhungu yakhala ikukwera kwazaka 30 zapitazi, ndipo chipatala cha Mayo Clinic chaposachedwa chinanena kuti mitundu iwiri ya khansa yapakhungu idakwera pachibwano ndi 145% ndi 263% kuyambira 2000 mpaka 2010.

Ngakhale tikudziwa kuti zoteteza ku dzuwa zimateteza ku khansa yapakhungu, mutha kuteteza khungu lanu mocheperako kuposa momwe mumaganizira posankha njira yolakwika mosazindikira. Environmental Working Group (EWG) posachedwapa yatulutsa zowunikira zawo zapachaka za 2017 zapachaka, zowerengera pafupifupi zinthu 1,500 zomwe zimalengezedwa ngati chitetezo cha dzuwa pachitetezo ndi magwiridwe antchito. Adapeza kuti 73% ya zinthuzo sizinagwire ntchito bwino, kapena zokhudzana ndi zosakaniza, kuphatikiza mankhwala omwe amangidwa chifukwa cha kusokonezeka kwa mahomoni komanso kukwiya pakhungu.

Ofufuza awo akunena kuti ngakhale anthu ambiri amayang'ana kwambiri SPF, zomwe akuyenera kuyang'ana ndizopangira botolo. Mitengoyi imakhala ndi mankhwala owopsa kapena owopsa omwe amakhala mgulu lotchedwa mineral-based, kapena "zachilengedwe," zoteteza dzuwa.

Mwachiwonekere, ambiri mwa inu muli kale ndi chidwi chofuna kudziwa za gululi: Kafukufuku wa 2016 Consumer Reports adapeza kuti pafupifupi theka la anthu 1,000 omwe adafunsidwa adati akufuna chinthu "chachilengedwe" akagula zoteteza ku dzuwa. Koma kodi zowotcha dzuwa zachilengedwe zimafananadi ndi chitetezo chomwe chimaperekedwa ndi mankhwala?

Chodabwitsa ndichakuti, ma dermatologists awiri amatsimikizira kuti atha kutero. Nazi zomwe muyenera kudziwa.

Kodi mu Mineral Formula ndi Chiyani?

Kusiyanitsa pakati pazodzikongoletsera zachilengedwe, zopangidwa ndi mankhwala ndi mitundu yosiyanasiyana yamchere kumatsikira mtundu wazinthu zopangira. Mafuta opangidwa ndi mchere amagwiritsira ntchito blockers-zinc oxide ndi / kapena titaniyamu dioxide -omwe amapanga chotchinga pakhungu lanu ndikuwonetsa cheza cha UV. Enawo amagwiritsa ntchito mankhwala otsekemera-makamaka kuphatikiza kwa oxybenzone, avobenzone, octisalate, octocrylene, homosalate ndi / kapena octinoxate-komwe kumayamwa ma radiation a UV kuti athetse. (Tikudziwa, ndi pakamwa!)

Palinso mitundu iwiri ya cheza cha UV: UVB, yomwe imayambitsa kuyaka kwenikweni kwa dzuwa, ndi kuwala kwa UVA, komwe kumalowa mozama. Ochepa pamchere, oteteza thupi amateteza motsutsana ndi onse awiri. Koma popeza zotsekereza zamankhwala zimayamwa kunyezimira m'malo mwake, izi zimalola UVA kufikira zigawo zakuya za khungu lanu ndikuwononga, akufotokoza a Jeanette Jacknin, MD, a dermatologist okhazikika a San Diego komanso wolemba Mankhwala anzeru pakhungu lanu.

Vuto ndi Chemical Blockers

Chodetsa nkhaŵa china chachikulu ndi oletsa mankhwala ndi lingaliro lakuti amasokoneza kupanga mahomoni. Izi ndi zomwe maphunziro a nyama ndi ma cell atsimikizira, koma tikufunika kafukufuku wochulukirapo pa anthu kuti atiuze momwe zimagwirira ntchito mwachindunji ku sunscreen (kuchuluka kwa mankhwala omwe amatengedwa, momwe amatulutsira mwachangu, ndi zina), akutero Apple Bodemer, MD. pulofesa wa Dermatology ku yunivesite ya Wisconsin.

Koma kafukufuku wamankhwalawa, ambiri, ndiwowopsa pazomwe timayenera kufalitsa tsiku lililonse. Mankhwala amodzi makamaka, oxybenzone, adalumikizidwa ndi chiopsezo chachikulu cha endometriosis mwa amayi, umuna wosauka kwambiri mwa amuna, ziwengo pakhungu, kusokonezeka kwa mahomoni, komanso kuwonongeka kwa khungu-ndipo oxybenzone imawonjezeredwa pafupifupi 65% ya mafuta osungira mchere mkati nkhokwe ya EWG ya 2017 yoteteza dzuwa, Dr. Jacknin akuwonetsa. Ndipo kafukufuku watsopano wochokera ku Russia adasindikizidwa munyuzipepalayo Chemosphere anapeza kuti ngakhale mankhwala wamba oteteza dzuwa, avobenzone, nthawi zambiri amakhala otetezeka paokha, pamene mamolekyu amagwirizana ndi madzi a klorini ndi kuwala kwa UV, amagawanika kukhala mankhwala otchedwa phenols ndi acetyl benzenes, omwe amadziwika kuti ndi oopsa kwambiri.

Mankhwala ena owopsa: retinyl palmitate, omwe amatha kuyambitsa zotupa ndi zotupa zikagwiritsidwa ntchito pakhungu padzuwa, akuwonjezera. Ngakhale patsamba lochepa kwambiri, oxybenzone ndi mankhwala ena amakonda kubweretsa mavuto pakhungu ndi kukwiya, pomwe mchere sukhala, Dr. Bodemer akuti - ngakhale akuwonjezera kuti iyi ndi nkhani yokhudza achikulire omwe ali ndi khungu losamva komanso ana .

Ndiye Kodi Ma Cream Onse Otengera Mchere Ndi Bwino?

Mafuta odzola amchere ndi achilengedwe, koma ngakhale zosakaniza zawo zotsukira zimadutsa momwe zimapangidwira popanga, Dr. Bodemer akufotokoza. Ndipo zowotchera dzuwa zambiri zamchere zimakhala ndi zotchingira mankhwala, nazonso. "Sizachilendo kupeza kuphatikiza kwa zoletsa zathupi ndi mankhwala," akuwonjezera.

Izi zikunenedwa, popeza tikudziwa zochepa kwambiri pazomwe mankhwala amatsekereza amachita m'matupi mwathu, akatswiri onsewa amavomereza kuti kubetcha kwanu ndikufikira ma sunscreen am'madzi okhala ndi zotchinga, makamaka ngati muli ndi khungu lowoneka bwino.

Chitetezo chapamwamba chimabwera pamtengo wochepa kwambiri, komabe: "Choyipa chachikulu ndichakuti mafuta ambiri oteteza dzuwa okhala ndi zinc ndi titanium dioxide amakhala oyera kwambiri komanso osasangalatsa," akutero Dr. Jacknin. (Ganizirani osambira okhala ndi mizere yoyera pansi pamphuno zawo.)

Mwamwayi, opanga ambiri atsutsa izi mwa kupanga ma formula ndi nanoparticles, omwe amathandiza kuti titaniyamu yoyera ya titaniyamu iwoneke bwino komanso imapereka chitetezo chabwino cha SPF-koma pamtengo wa chitetezo choipitsitsa cha UVA, akutero Dr. Jacknin. Momwemo, chilinganizocho chimakhala ndi tinthu tating'onoting'ono ta zinc oxide kuti chitetezedwe chachikulu cha UVA, ndi tinthu tating'ono ta titanium dioxide kotero kuti mankhwalawo aziwoneka bwino.

Zoyenera Kuyang'ana

Ngakhale ma sunscreen amchere amakhala abwino pakhungu lanu, Bwanji zabwino kwambiri zimatengera zomwe zili mkati. Monga momwe zimakhalira ndi chakudya, mawu oti "wachilengedwe" pamtunduwu samakhala ndi kulemera konse. "Zovala zonse za dzuwa zimakhala ndi mankhwala mwa iwo, kaya amaonedwa kuti ndi achilengedwe kapena ayi. Momwe iwo aliri achilengedwe amadalira chizindikiro, "akutero Dr. Bodemer.

Yang'anani zodzitetezera ku dzuwa zomwe zili ndi zinc oxide ndi titanium dioxide.Mwinanso mupeza zosankha zabwino kwambiri m'sitolo yakunja kapena malo ogulitsira zakudya, koma ngakhale zinthu zodziwika bwino monga Neutrogena ndi Aveeno zili ndi njira zopangira mchere. Ngati simungapeze izi pa alumali, chotsatira chabwino ndikupewa omwe ali ndi mankhwala omwe asayansi amati ndi ovulaza kwambiri: oxybenzone, avobenzone, ndi retinyl palmitate. (Langizo: Ngati muli ndi khungu losavuta, yang'anani mabotolo olembedwera ana, a Dr. Bodemer amagawana.) Pazinthu zosagwira, Dr. Bodemer amalimbikitsa kufunafuna mabotolo otchedwa "masewera" kapena "osagwira madzi" m'malo mokhala , chifukwa izi zizikhala nthawi yayitali kudzera mu thukuta ndi madzi. Ndipo ngakhale ambiri a ife timaphunzitsidwa kufunafuna SPF, ngakhale a FDA amatcha SPF yayikulu "kusocheretsa mwachilengedwe." EWG ikulongosola kuti ndizothandiza kwambiri kugwiritsa ntchito zotchinga dzuwa zochepa za SPF kuposa theka lokwera mtima. Dr. Bodemer akutsimikizira kuti: Mafuta otetezera dzuwa onse adzatha, chifukwa chake ngakhale SPF kapena zinthu zina, muyenera kuyikanso osachepera maola awiri aliwonse. (FYI nazi zosankha zodzitetezera ku dzuwa zomwe zinayimira mayeso athu a thukuta.)

Ndipo ngakhale zingakhale zovuta kuvala, kuli bwino kumamatira ku mafuta odzola - ma nanoparticles omwe amachepetsa chalkiness nthawi zambiri amakhala otetezeka, koma amatha kuwononga mapapo ngati mutawakoka ndi mankhwala opopera, Dr. Jacknin akuwonjezera. Ntchito ina yofunika FYI: Chifukwa mafuta oteteza dzuwa amateteza popanga chotchinga, mumafuna kuti mutuluke mphindi 15 mpaka 20 musanatuluke musanayambe kusuntha ndi kutuluka thukuta - kuti muwonetsetse kuti muli ndi filimu yofanana pakhungu lanu mutangowomba dzuwa. , Dr. Bodemer akuti. (Kwa mtundu wa mankhwala, ikani mphindi 20 mpaka 30 dzuwa lisanakhale padzuwa kuti likhale ndi nthawi yolowera.)

EWG imayika mtundu uliwonse wa zoteteza ku dzuwa kuti zitheke komanso chitetezo, chifukwa chake onani nkhokwe yawo kuti muwone komwe njira yanu yomwe mumakonda imagwera. Zina mwazomwe timakonda zomwe zimakwaniritsa malangizo amtunduwu ndi EWG: Beyond Coastal Active Sunscreen, Badger Tinted Sunscreen, ndi Neutrogena Sheer Zinc Dry-Touch Sunscreen.

Kumbukirani ngakhale pang'ono, zilizonse mtundu wa zotchingira dzuwa ndizabwino kuposa ayi zoteteza ku dzuwa. "Tikudziwa kuti kuwala kwa dzuwa ndi carcinogen yaumunthu - imayambitsa khansa yapakhungu yomwe si ya melanoma, ndipo kutentha kumayenderana kwambiri ndi khansa ya melanoma. Kutuluka padzuwa kumakhala ndi mwayi waukulu woyambitsa khansa kusiyana ndi kuika mafuta oteteza dzuwa pakhungu lanu. " Dr. Bodemer akuwonjezera.

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