Ma dzuwa ndi njira zina zachilengedwe

Ma radiation a UV ndiye amachititsa kuti mavitamini D apangidwe pakhungu, kuwonjezera pamenepo, dzuwa lititonthoza. Koma kale m'zaka za 1930er wina amadziwanso zoopsa za radiation yowonjezera dzuwa. 1933 yapereka kale patent ya Drugofa GmbH, kampani yothandizira ku Bayer, pazinthu zomwe zimatchedwa kuti Delal. Choyera choyamba cha dzuwa chokhala ndi fyuluta yoteteza UV, dzuwa loyambirira, linabadwa. Mafuta, zopopera kapena mafuta omwe amapukutidwa kuzungulira dzuwa pazaka za 1980 amapezekadi ndizofunikira. Mwadzidzidzi aliyense adalankhula za dzenje la ozoni komanso zoteteza dzuwa pazinthu zosiyanasiyana zomwe zidakwera mwachangu.

Zogulitsa zomwe zili ndi chidindo cha UVA zikuonetsetsa kuti chitetezo cha UVA ndicho gawo limodzi mwa magawo atatu a chitetezo cha UVB. Mphamvu yoteteza dzuwa imangotanthauza kutetezedwa ku kuwala kwa UVB, ma radiation a UVA nthawi zambiri samalandira chidwi. Chisindikizo cha UVA ndi chitsogozo chabwino posankha dzuwa.

Zosaoneka: radiation ya UV

Kuphatikiza pa kuunika kwake kowoneka, kuwala kwa dzuwa kumakhala ndi ma radiation a UVA okhala ndi mafunde aatali, ma radiation afupikitsafupi a UVB ndi ma radiation a UVC, omwe safika padziko lapansi chifukwa cha ozone wosanjikiza. Ma radiation a UV ndiye amachititsa khungu kukhala lofiirira. Izi ndi njira yoteteza. Vutoli limakhala ndi maselo opanga ma pigment, ma melanocyte, omwe mtundu wake wa bulauni melanin umateteza khungu ku dzuwa. Ngati ma radiation ochulukirapo a UVB agunda khungu losatetezedwa, pali yankho la kutupa lomwe likugwirizana ndi kutentha, kutentha kwa dzuwa. Koma ngakhale ma ray ogwirira ntchito a UVA omwe siwoleza sikuti ali ndi vuto lililonse. Amalowa mkatikati mwa khungu ndikuwonongeka kwa khungu, komwe kumapangitsa kutsika kwa khungu motero limayamba kukalamba msanga komanso makwinya.

Nthano za UV za dzuwa

Kugwiritsira ntchito dzuwa kwa nthawi yayitali kumachulukitsa nthawi yoteteza?
Ayi, chitetezo sichokwanira, koma chimasungidwa. Mwachitsanzo, aliyense amene amakhala ndi khungu lofiira padzuwa osadzitchinjiriza pakatha mphindi khumi amatha kukhala padzuwa pafupifupi maola asanu ndikuteteza dzuwa kwa 30.

Kodi Blondes amafunikira kutetezedwa ndi dzuwa kuposa kutulutsa tsitsi lakuda?
Ayi, chifukwa si mtundu wa tsitsi womwe umafunikira, koma khungu.

Khungu litangokulungika, kodi simukuwotchedwanso?
Kulira kukufunikirabe. Khungu silizolowera dzuwa mpaka kalekale komanso siziwala kuwonongeka kwa dzuwa.

Ndi kufiyira koyamba kodi ndikokwanira kumayenda kwa maola angapo mthunzi? Ayi, kwachedwa kwambiri. Kutentha kwa dzuwa kumafika pachimake patatha maola pafupifupi 24.

Kodi solarium imathandizira kuti padzuwa pakhale dzuwa? Ayi, dzuwa limagwira ntchito ndi kuwala kwa UVA. Kuchokera pamalingaliro azachipatala, kuwonetsa kwambiri khungu pakhungu la UV kuyenera kupewa. Izi zimabweretsa kukalamba msanga pakhungu. Nthawi yomweyo, chiopsezo chotenga khansa yapakhungu imakulimbikitsidwa.

Sunscreen & Pambuyo Dzuwa

Maimoni ambiri a dzuwa amadalira kuphatikiza zojambula zakuthupi ndi zamankhwala. Zosefera za titanium oxide kapena zinc oxide zathupi zimawonetsera ndikumwaza kuwala kwa UV komwe kuli ngati magalasi ang'ono. Zosefera zama Chemicals zimasinthira mawayilesi owopsa a UV kukhala mphamvu yopanda vuto, mwachitsanzo kuwala kapena kutentha kwa infrared. Mu zopangidwa ndi Sun Pambuyo pamavalidwe a 20 a miniti ya UV, kuwonongeka kwa majini am'maselo a khungu kumachitika. Zina zopangidwa ndi dzuwa pambuyo pake zimakhala ndi enzyme Photolyase, yomwe imathandizira pakhungu lake kukonza. Kwanthawi yayitali tsopano chizolowezichi chakhala chopita kuzinthu zomwe zimadziwika kuti zopanga mtanda. Mwachitsanzo, mafuta othandizira masana kapena odziyendetsa okha tsopano ali ndi mafayilo a UVA ndi UVB.

Chitetezo chamchere chamchere (yotchedwanso dzuwa ") ndi njira yachilengedwe m'malo ogwirira dzuwa ndi zopopera ndipo imatitetezanso ku radiation ya UV. Mosiyana ndi ma sunscreens a mankhwala, zinthu zopangira mineral zimagwira ntchito ina: mchere wachilengedwe umapezeka pakhungu ndipo umawonetsa kuwala kwa UV komwe kumakhala ngati galasi. Zosefera izi zachilengedwe za dzuwa zimagwira ntchito mukangomaliza kugwiritsa ntchito ndipo sizitulutsa timadzi tambiri. Mitundu yachilengedwe yam'madzi mu emulsion imawonekeranso: Kudzera powunikira kumawoneka ngati oyera oyera, khungu limadziwika loyera komanso loyenda. Kuzolowera.

Pokambirana ndi Dr. Dagmar Millesi, katswiri wa opaleshoni ya pulasitiki ndi zokongoletsa za zonona dzuwa, kutentha kwa dzuwa & Co.

Dzuwa: Kodi chimachitika ndi chiyani pakhungu?
Millesi: "Dzuwa limatulutsa mphamvu ya UV. Izi zimabweretsa kutulutsidwa kwa amithenga ena monga histamine kapena ma interleukins pakhungu. Magetsi ochulukirapo amayambitsa kuchepa kwa mitsempha ya magazi, redness ndi kutupa kwa khungu lakhudzidwa. Zimaluma kapena kuwotcha. Izi zimachitika pakhungu lomwe limatchedwa kutentha kwa dzuwa. Kuwotcha kadzuwa, kumayambitsanso matuza ndipo nthawi zambiri kumatentha thupi, nseru, kuzizira komanso kusanza. Dzuwa limatentha khungu ndipo liyenera kupewedwa zivute zitani. "

Kodi dzuwa litha kugwira ntchito bwanji?
Millesi: "Maimoni a dzuwa amawongoletsa kuwala kwa UV ndikuwonetsa dzuwa ndipo amatithandizira kuti khungu liziteteza khungu ku radiation ya UV. Kusiyanitsa ndi mafuta owoneka ndi dzuwa omwe amagwira ntchito mwakuthupi kapena mankhwala. Zosefera za UV zamkati zimalowa mu khungu mutatha kugwiritsa ntchito ndikupanga mtundu wa kanema wamkati woteteza. Izi zimasinthira ma ray a UV kukhala kuwala kwa infra ndipo motero kukhala kutentha. Choyipa ndichakuti mafuta amdzuwa akangochita pafupifupi mphindi za 30, kuwonjezera apo, anthu ena amachitanso izi. Zosefera zakuthupi sizilowa pakhungu koma zimapanga filimu yoteteza kunja kwa khungu. Zotsatira zake, ma ray a UV amatetezedwa kapena kuwonetsedwa. Ubwino wamamawa ndi kuti amalekeredwa bwino. "

Kodi kulinso dzuwa loteteza dzuwa?
Millesi: "Dzuwa labwino kwambiri lachilengedwe ndi kupewa kuthana ndi dzuwa. Chifukwa chake musadziwonetsere dzuwa ladzuwa lamadzulo, muziyang'ana mawanga ndi zovala ndi dzuwa. Komanso, mafuta ena amatha kukhala ngati chopepuka cha dzuwa, monga mafuta a sesame, mafuta a kokonati kapena mafuta a jojoba. Zotetezazi zimangokhala 10-30 peresenti ya mawanga a UV. Koma munthu asayiwale kuti kuwala kwa dzuwa kumakwaniritsa ntchito zofunika mthupi la munthu. Imayambitsa kupanga vitamini D, imakhudzanso zinthu za amithenga, monga serotonin, ndipo imathanso kukhudzanso mahomoni. "

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