Xa kufikwa kwiibhedi zokuthambisa ilanga, iintlobo ezimbini zokukhanya kwe-ultraviolet —I-UVAkwayeI-UVB— dlala indima enkulu ekutshintsheni umbala wolusu lwakho. Ukuqonda indlela ezisebenza ngayo ezi mitha kukunceda ukuba utshintshe umbala wolusu ngempumelelo ngelixa ukhusela ulusu lwakho ekonakalisweni okunokwenzeka.
1. Yintoni ukukhanya kwe-UVA?
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Ubude bamaza:Iinanomitha ezingama-315–400.
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Ukungena:Ifikelela nzulu kwi-dermis (umaleko wesibini wesikhumba).
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Isiphumo:Ibangela ukuba umbala ube mnyama ngoko nangoko ngokufaka i-oxidizing i-melanin ekhoyo.
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Iingozi:Ikhawulezisa ukuguga kolusu, inegalelo kwimibimbi, kwaye inokonakalisa i-DNA ngokuhamba kwexesha.
Kwiibhedi zokuthambisa, ii-UVA ziyazenza ii-makeupmalunga ne-90–98%yemveliso ye-UV.
2. Yintoni i-UVB Light?
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Ubude bamaza:Iinanomitha ezingama-280–315.
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Ukungena:Ichaphazela ikakhulu i-epidermis (umaleko ongaphandle wolusu).
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Isiphumo:Ivuselela ii-melanocytes ukuvelisa i-melanin entsha, nto leyo ekhokelela ekubeni i-tan ihlale ixesha elide.
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Iingozi:Eyona nto ibangela ukutsha lilanga, ingonakalisa iiseli zolusu kwaye yonyuse umngcipheko womhlaza.
Kwiibhedi zokuthambisa, i-UVB idla ngokuba yimbangela ye-dermatitis.2–10%imveliso ye-UV.
3. I-UVA vs. I-UVB kwiibhedi zolusu
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I-UVA:Ukutshintsha kombala ngokukhawuleza, kuyaphela ngokukhawuleza ngaphandle kokukhuthazwa yi-UVB.
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I-UVB:Uphuhliso lombala olucothayo, kodwa umbala welanga uhlala ixesha elide.
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Udibaniso:Iibhedi zokufunxa ibala zisebenzisa zombini ezi zinto ukunika isiphumo sokufunxa ibala ngoko nangoko nangokuqhubekayo.
4. Izinto ekufuneka ziqwalaselwe kukhuseleko
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Nciphisa ixesha lokuvezwa ukuze uphephe ukuchanabeka kakhulu.
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Nxiba izibuko zokukhusela amehlo rhoqo ukuze uthintele imisebe ye-UV eyingozi.
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Nciphisa ulusu ngaphambi nasemva kokulufaka elangeni ukuze unciphise ukoma.
Isiphelo
Zombini imitha ye-UVA kunye ne-UVB zibalulekile kwinkqubo yokutshiswa kwesikhumba, kodwa nganye iza neenzuzo zayo kunye neengozi zayo. Ukuqonda okulinganiselweyo kukunceda ukuba ufakwe ibala ngokukhuselekileyo kwaye ugcine ulusu lusempilweni ekuhambeni kwexesha.