Zvigadzirwa zveScreen
SPF inomirira Sun Protection Factor , iyo inoratidza kuti kudzivirirwa kwezuva kwezuva kunopikira mavhiri eVB uye kupisa kwezuva.
Muzhinji, sunscreen ne:
- SPF 2 inovhara 50 muzana yemirasi yeVB
- SPF 4 inovhara 75 muzana yemirairo yeVB
- SPF 8 inodzivirira 87 muzana yemirasi yeVB
- SPF 15 inovhara 93 muzana yemirasi yeVB
- SPF 30 inovhara 97 muzana yeVV rays
- SPF 50 mabheji 98 kubva muzana emirasi yeVB
- SPF 100 inodzivirira 99 muzana yeVV rays
Sezvaunogona kuona, kana ukasvika ku SPF 30, hauna kuwana zvakanyanya kudzivirirwa nekuenda zvakakwirira.
Nepo iwe unogona chaizvo kushandisa sunscreen neSSPF 50+ ku SPF 100+, chengetedza mupfungwa kuti havakwanise kudzivirira zvakanyanya. Kushandisa shisa yakakwirira yeSSPF inogona kunge iri pfungwa yakanaka kune vabereki ivavo vasingashandisi zvakakwana zvechena chezuva uye havazviiti zvakare nguva yakawanda zvakadaro.
Uyewo, yeuka kuti SPF inongova chiratidzo chekubudirira kurwisana nemirairo yeVB. Ndosaka zvakakosha kuti vabereki vave ne-sunscreen yakafara uye ine SPF 15 kusvika SPF 30, iyo inofanira kudzivirira mazai akawanda eUVA uye UVB kana yakashandiswa zvakanaka. Iwe unofanirwa kudzivisa pasi yakadzika yeScF yezuva kana kuti suntan lotion , iyo isina kupa zuva rakakwana kudzivirirwa.
UVA Kudzivirirwa Ratings
Ikozvino haisi nzira iri nyore yekuziva kuti inobatsira sei zuva rekushanda kwezuva rinopesana nemirairo yeUVA. Mutsva weDAA wokuisa mavara emuchena, kunze kwekuda kuisa kapu yeSSPF 50+, waifanira kuunza hutsva hweUVA huchina-nyota kuitira kuti vabereki vawane nyore kana checheni chezuva chichipa kudzivirirwa kweUVA pasi (nyeredzi imwe) kana yeUVA yakakwirira kudzivirirwa (nyeredzi ina).
Zvinyorwa zvitsva zvaizonyatsojekesa kana checheni chezuva chine 'pasina UVA kudzivirirwa.'
Zvinosuruvarisa, rekupedzisira Rule pamusoro pekutsvaga kwemazuva ekudzivirira kwezuva yakabvisa nyeredzi yemazuva, kufunga kuti zvingave zvakanyanya kuvhiringidza. Kana kisiketi yezuva ikozvino inonzi Broad Spectrum, zvino inodzivirira pakusana kweUVA mahara.
SPF yeZvipfeko
Nguo dzine imwe yakasiyana yehurongwa hwehutano hwakafanana nehuwandu hweSSPF hwezuva.
Zvisinei, panzvimbo yehuwandu hweSSPF, zvimwe zvipfeko zvine chikwata cheSupviolet Protection Factor (UPF), chinogona kubva kubva 15 (yakanaka zuva kudzivirira) kusvika kune 50+ (rakanyanya kudzivirirwa kwezuva) kuratidza kuti zvikamu zvemaira neUVB zvinogona kudzivisa .
Saka SPF Inorevei Chaizvo?
Kunyange kana iwe uchiziva kuti chechenesi yezuva neSSPF 15 inodzivirira 93 kubva muzana yemirairo yeVB, zvinorevei chaizvo munyika chaiye?
Nzira inofadza yekufunga pamusoro payo ndeyekuti shisa yezuva neSSPF 15 inokubvumira kuti ugare muzuva nguva yakareba zvakapetwa ka15 kupfuura kana iwe usina kudzivirirwa usati wawana kupisa kwezuva. Saizvozvowo, chisiki chezuva neSPF 30 zvinoreva kuti iwe unogona kuva muzuva nguva makumi matatu.
Sezvo zvichinyatsooma kutaura zvakajeka kuti zvinotora nguva yakareba sei kuti chero munhu mumwe chete awane kupisa kwezuva pasina zuva rekudzivirirwa kwezuva, iyo nguva yakareba makumi mana uye makumi matatu nguva yakareba haireve kureva zvakawanda. Iwe unofanirwa kuisa mukati memunhu weganda remukati, kwaanogara, nguva yegore, uye kunyange nguva yezuva kuziva nguva yakareba sei kuti vagone kugara muzuva uye kwete kuwana zuva rokupisa kwezuva. Somuenzaniso, mumwe munhu ane ruvara ruchena muzuva muTexas pa2: 00 pakati pezhizha pazuva rine huwandu hwehuwandu hweVU huchapisa zvakanyanya nokukurumidza, zvichida mumaminitsi gumi nemashanu, 6pmand zvinokurumidza kupfuura munhu ane chivara chine rima muIdaho 6 pm munguva yechando.
Zvimwe zvinhu zvinozoita kuti mwana wako awedzere njodzi yekutsvaga zuva nekukurumidza kunosanganisira kushandisa mamwe mishonga, kusanganisira mishonga inoshandiswa kurapa achena , iri panzvimbo yakakwirira, uye iri pedyo nepamusoro inogona kuratidza zuva, sechando nejecha.
Uye yeuka kuti ganda rezuva rinenge risina kubudirira mushure memaawa anenge maviri uye rinoda kuiswa zvakare, saka girasi reSSP 50 harifaniri kukubvumira kuti ugare muzuva nguva yakareba makumi mashanu kudarika kana iwe usina kudzivirirwa usati watanga kupisa kwezuva.
Kutumidzwa: SPF
Uyewo Anozivikanwa Se: Sun Protection Factor, SPF Kudzivirira
Mienzaniso: Girasi rezuva rine SPF 4 harina kupa nguva yakakwana kudzivirirwa kwevana.
> Wang, Steven Q. Iye zvino mamiriro ekurairirwa kwezuva nezuva muUnited States: Mutemo wekupedzisira wekudya uye weDrug Administration wekutsvaga nekugadzirisa kuongorora. J Am Acad Dermatol. August 5, 2011.