Sunscreens yakagadzirirwa kuchengetedza ganda rako muzuva, kufuta kunze kwekukuvadza kwezuva . Icho chichiri chekutanga uye chakanakisisa mutsara wezvidziviriro pakurarama kusati kwasvika kubva kune zuva, asi ndezvipi zvinganyatsotaridzirwa kusakwegura ?
Sunscreens inogona kubatsira kudzivirira zvitatu zvekuvhiringidzika kubva pamasikati:
- Sunburn
- Kanzera reganda
- Premature aging
Zvichida izvi zvinokambaira zvinogona kukubatsira kuti urege kunamatira, mazera emakore, uye zvimwe zviratidzo zvekukwegura kweganda nguva isati yasvika zvinoenderana nemhando ipi yemirairo ye ultraviolet inodzivisa.
Aina dzeUV Radiation
Mazuva ano masvikiro ane mikoko mitatu yemirasiyo:
Kunyange zvazvo UVA uye UVB inobatsira pakusvibiswa kweganda, mazai eUVA iye zvino anozivikanwa kuti anokonzera kusakara kweganda-zvichikonzera kumira, kushanduka kweganda, uye kusina kufanana kwemavara. UVB inonyanya kutarisira ganda rinopisa.
Ganda Rekugadzirira Kudzivirira
Zvinotoshamisa, kutsvakurudza zvishoma kana zuva rekudzivirira zuva richidzivirira kukwegura kweganda raivepo zvisati zvaitika muna 2013-zvichiratidza, zvisinei, kuti kushandiswa kwezuva kwezuva kunopedza kana kudzivirira kukwegura kweganda (kunze kwemakonzo asina mvere).
Kuti uone kana ganda rezuva rinogona kudzivirira kukanganiswa nevanhu, vatsvakurudzi veAustralia vakaita chirongwa chisina kuongororwa chekutonga vachishandisa data kubva kuNambour Skin Cancer Prevention Trial. Rakadhindwa muAnalals of Internal Medicine , chidzidzo chakafananidza 903 nyaya dzevanhu vakuru dzakakamurwa kuva mapoka mana:
- Vaya vanorayirirwa kushandisa svinga rezuva guru kumisoro yavo, mutsipa, maoko, nemaoko mangwanani oga oga (uye zvakare mushure mekunyuka kana kushambidza)
- Vaya vanogona kushandisa shandi yezuva rimwe chete pavanenge vachida
- Nhengo dzinogamuchira bheta-carotene kuwedzera zuva rega rega
- Avo vakapiwa nzvimbo yekuwedzera
Mushure memakore mana nehafu, vatsvakurudzi vakatsvaga maitiro ekupedzisira ekutora akatorwa kubva kumashure ezvidzidzo 'maoko. Mushure mekugadzirisa zvinhu zvakadai sekuwandisa kwezuva uye kusvuta (izvo zvinogonawo kugadzirwa kwenguva yakareba ganda), vakawana kuti avo vakuru vakashandisa zuva guru rezuva zuva rose vakaratidza "hapana kuonekwa kunoonekwa" mukukwegura kweganda.
Uyezve, kukwegura kweganda-yakadai seganda rakanyanyisa uye kunyanya kupikisa-munguva yekudzidza yakawanikwa kuva 24 muzana pasi pakati pezvidzidzo muzuva rezuva rezuva rekunze kwezuva kana tichienzaniswa nezvidzidzo tichishandisa zvisikwa zveganda rezuva chete pamusana pekuziva. Kuwedzera pamwe ne beta-carotene kwakanga kusina huwandu hwekukwegura kweganda.
Shoko Rinobva
Kuti urege kurega kusakara kweganda rako, unofanirwa kushandisa shisi yezuva yakatarwa se "yakareba-mavara." Izvi zvinoreva kuti inodzima kunze kwemiviri yeUVA neVBB, kusiyana nezuva rekudzivirirwa kwezuva ( SPF ) rakagadzirirwa kudzivisa kupisa UVB rays. Kubva muna 2012, US Food and Drug Administration (FDA) inoda vatsiki vemazuva ano kuti vaone kana chigadzirwa chavo chinopa kudzivirirwa kwemavara.
IAmerican Academy of Dermatology (AAD) inokurudzira zuva rekunze kwezuva neSSPF yevanenge makumi matatu. Uyewo zivai nezvemazuva anovhenekeri. Zvimwe zvinoshandiswa kunze kwemasvikiro eUVA zvinosanganisira Avobenzone (Parsol 1789) uye Benzophenones. Zvimwe zvinoshandiswa pakutsvaga miviri yeVBB zvinosanganisira PABA, cinnamates, uye salicylates.
Chero chero chigadzirwa chaunosarudza chinofanira kushandiswa pachena (anenge ane imwe kana 15 ml) uye kazhinji (maawa maviri kana kupfuura). Sezvo pasina chekudzivirira kwezuva risina mvura, unofanirwa kushandisa zvakare mushure mekushambira kana zvinhu zvinoita kuti iwe upike.
Mukuwedzera, maAAD nedzimwe masangano ezvehutano vanokurudzira kugara kunze kwezuva panguva yepamusoro kwekuvhara kwemaawa masikati-kazhinji kusvika 10am kusvika 2 pm - nezvimwe zviyero zvakadai sekupfeka zvipfeko zvekudzivirira kuti usapera kuchembera, kupisa kwezuva, uye kenza yeganda.
> Sources:
> FDA Sheds Chiedza pamasikati machena. US Food and Drug Administration Public Information Sheet. July 15, 2013.
> Hughes, Maria Celia B; Williams, Gail M; Baker, Peter; Green, Adèle C. "Chisiki chezuva uye Kudzivirira Kweganda Rwegura, Dambudziko Rakagadziriswa". Anals of Internal Medicine. 06/2013; 158 (11): 781-790.
> Sunscreen FAQs. American Academy of Dermatology Public Information Sheet. July 15, 2013.