Ehlobo, ngemuva kwelanga, isikhumba sethu sivezwa umphumela omkhulu kakhulu, ongagcini ngokushisa kuphela, kodwa futhi ukuze ube yimbangela yezifo ezahlukahlukene. Le miphumela isimi sempilo yansuku zonke edolobheni, okungukuthi, ukukhuluma ngeholide lasebhishi. Ngakho-ke, akudingekile ukungakunaki ukusetshenziswa kwe-sunscreen, ukukhetha okuwukuhluka kakhulu emakethe. Kepha kuhlanganisa nakho - ukuba khona kwesifinyezo se-spf kwiphakheji. Ngeshwa, kwi-Intanethi imininingwane eminingi ephikisanayo nge-SPF. Ake sibheke ukuthi iqiniso liphi, futhi lapho inganekwane.
Okulinganiswa yi-spf
Isici sokuvikelwa selanga noma sokuvikelwa selanga siyisici esinemibandela esisiza isikhumba sethu ukuthi sivikelekene ne-ultraviolet. Ukushiswa yi-SPF kusuka ku-6 kuye kwangama-50. Kwezinye izimo, babhala ama-50 +, kepha akusobala, okuqondayo umenzi ngaphansi kwale nombolo.
Idijithi emi ngemuva kwezinhlamvu ze-SPF ivame ukuchazwa njengokwanda ngesikhathi selanga ngaphandle kwemiphumela yesikhumba ngenombolo ebekiwe yezikhathi zezikhathi. Okungukuthi, uma isikhumba sakho elangeni sibona ngelanga ngemizuzu eyi-10 (kuya ngohlobo lwesikhumba, leli nani lingasukela imizuzu emi-5 kuye kwangama-30), ilithuluzi eline-SPF 20, kubukeka sengathi, linwebeka izakhiwo ezivikela ngo-10 × 20 = Imizuzu engama-200. Le ncazelo inokubuya okubalulekile: Kuvela ukuthi i-SPF 6 ne-SPF 50 ivikela isikhumba ngokulinganayo, kuphela esigabeni sokuqala Umphumela uthatha imizuzu engama-60, kanti ngowesibili - 500. Eqinisweni, inani le-SPF libonisa iphesenti le-UV Imisebe, ukuvikelwa kwayo okunikeza izindlela. I-SPF 15 izovikela kusuka ku-93.3%, i-SPF 30 - kusuka ku-96.7%, futhi i-SPF 50 isuka ku-98%. Akudingeki ukuthi ukhulume ngokuvikelwa okukhulu uma kwenzeka, khona-ke kuphela ngesimo samaphesenti. Phambilini, abathengisi bezinqola, babhalwe, babhale emaphaketheni inani le-SPF 100 no-150. Namuhla anqatshelwe, ngoba awenqatsheli umthengi.
Uma sikhuluma ngezinga lokuvikelwa ngaphansi kuka-15, empeleni, ukusetshenziswa kwezimali ezinjalo akwanele. Ekhuluma ngokuqinile, weqa ezanele i-ultraviolet ukufaka ukulimala kwesikhumba. Isibonelo, nge-SPF 6 kuya esikhunjeni, i-16.7% yemisebe izothola, okuyi-ke, empeleni, ayinakubhekwa njengomthamo ophephile.
Isikhathi esingakanani ukuvikela
Inani le-SPF udinga ukunqunywa ngqo, ngokususelwa kuhlobo lwesikhumba, kepha hhayi kusukela ngesikhathi kufanele ukuthi sichithe elangeni. Uma sikhuluma ngesikhathi somphumela, kuya ngohlobo lokuhlunga, kanye nohlobo lomthelela.
Izihlungi zingamakhemikhali (ngokwesibonelo, i-autobenzon, i-benzophenone) kanye nomzimba (uZinc onide noma i-titanium dioxide). Ziyehluka ngomgomo womsebenzi. Ngasikhathi sinye, izihlungi zamakhemikhali zizosebenza lapho zisetshenziswa empilweni yansuku zonke - ogwini zingaletha ukulimala okwengeziwe kunokuhle. Ngemuva kwamahora amabili, ukwakheka kwabo baqala ukuzishintsha elangeni, futhi kungenzeka ukubavikele kuphela ngokucophelela nangokuqalisa kabusha ithuluzi.
Izihlungi ezingokomzimba zingaphansi kweSoothetheliva, ebhishi kufanelekile ukuyisebenzisa. Kepha kancane kancane balahlekelwa ukusebenziseka kwabo, njengoba begeza noma besulwa ngenxa yemithelela emishini. Ngakho-ke kufanele futhi ivuselelwe njalo emahoreni ama-3-5, kanye naso sonke isikhathi ngemuva kokugeza. Ama-superproof suncreens aheha abathengi abanye abakhiqizi enzelwe ukuvikela isikhumba ngqo ngesikhathi sokubhukuda (yebo, namanzi futhi aphuthelwa i-ultraviolet). Kodwa-ke, ngemuva kokubuyela ogwini, ukuvikeleka okunjalo kufanele futhi kuvuselelwe.
Esikhathini esibukweni semisebe ye-UV
Akunakwenzeka ukuthi ungasaphathwa i-spectra yemisebe ye-ultraviolet. Imisebe ye-spectrum in (UVB) iyahlukaniswa, okubangela ukushiswa, nemisebe ye-spectrum, a (UVA) ebhekele ukuguga kwesikhumba. Kusuka ekuqaleni kuvimbela ama-sunscreens amaningi. Ukuvikela imisebe ye-spectrum, futhi kunezindlela zophawu lwe-UVA kwiphakheji. Ngenxa yokungakhethi kufanele kushiwo ukuthi indlela yokuvezwa kwale misebe esikhunjeni ayifundwa ngokuphelele, futhi abanye ochwepheshe bayangabaza ukusebenza kwalokhu kuvikelekile.
Ungasho ngokuqinisekile ukuthi kufanelekile ukusebenzisa izeluleko ezijwayelekile ukunciphisa i-PhotoRement - ukunciphisa isikhathi sokuhlala elangeni, ungaphumi ngaphandle komsebenzi omkhulu welanga - kusuka kumahora ayi-12 kuye kwayi-15. Ungakhohlwa ukuthi izingubo ezijwayelekile futhi ziphuthelwa inani elibalulekile lemisebe ye-spectrum a, okungukuthi, ukuvikela ekushisweni, kepha akugcini ekugugeni, ukubukeka kwemibimbi kanye nemibimbi.
Ngabe izimonyo zokuhlobisa ziyavikela?
Ngokuqondene nezimonyo zokuhlobisa nge-SPF, izakhiwo ezivikelayo zalo akuphezulu kakhulu, futhi nelanga elinamandla, kungcono ukulusebenzisa ama-sunscreens akhethekile. Kodwa-ke, izimonyo ezanele. Isibonelo, i-powder yokuhlobisa ingena kahle ultraviolet, enikeza ukuvikela i-SPF 15-20. Ngasikhathi sinye, akunawo amaphuzu esikhuphe ama-pores, okubaluleke kakhulu ehlobo.
Akudingekile ukunaka izindleko eziphakeme zemali nodumo lomkhiqizo. Ukusuka kwizimonyo ezithembisa i-SPF 30 noma i-50, noma ezinye izingxenye ezingakaze zibonwe "anti", akufanele ulindele okuthile okukhethekile. Konke lokhu akulutho ngaphezu kwamagama. Ebhishi kusasetshenziswa okujwayelekile, kepha kufakazelwe izindlela ezikhethekile ezizoqinisekisa ukuvikelwa okuthembekile.