Basicscreen Basics
I-SPF imele i- Sun Protection Factor , ebonisa ukuba ukhuseleko olunjani olwenziwe ngelanga lunikeza imilayezo ye-UVB kunye nokushiswa kwelanga.
Ngokubanzi, i-sunscreen ene:
- I-SPF 2 ikhusela ama-50 ekhulwini ama-UVB
- I-SPF 4 ikhusela iipesenti ezingama-75 ze-UVB
- I-SPF 8 ibhalela ama-87 ekhulwini ama-UVB
- I-SPF 15 ikhusela iipesenti ezingama-93 ze-UVB
- I-SPF 30 ibhalela i-97 ekhulwini yemitha ye-UVB
- I-SPF 50 iibhloko eziyi-98 ekhulwini lwemibala ye-UVB
- I-SPF 100 ibhalela ama-99 ekhulwini ama-UVB
Njengoko uyakubona, xa ufika kwi-SPF 30, awufumani lo khuselo olongezelelweyo ngokuya phezulu.
Nangona ngokuqinisekileyo ungasebenzisa i-sunscreen nge-SPF 50+ kwi-SPF 100+, gcina ukhumbule ukuba abanikezeli ngokukhuseleko okongezelelweyo. Ukusebenzisa i-sunscreen ephezulu ye-SPF ingaba yinto efanelekileyo kubazali abangasebenzisi i-sunscreen ngokwaneleyo kwaye abayiyibuyisela ngokuphindaphindiweyo ngokwaneleyo nangona kunjalo.
Kwakhona, khumbula ukuba i-SPF ibonisa nje kuphela ukuphumelela kwimimitha ye-UVB. Yingakho kubalulekile ukuba abazali bafumane i-sunscreen ebanzi ngokubanzi kunye ne-SPF 15 ukuya kwi-SPF 30, emele ikhusele ii-ray eziphezulu ze-UVA kunye ne-UVB xa zisetyenziswa ngokufanelekileyo. Kufuneka uphephe i-suncreen ephantsi ye-SPF okanye i- suntan lotion , engaboneleli ngokwaneleyo ukukhuselwa kwelanga.
Ukulinganiselwa koKhuselo lwe-UVA
Okwangoku akukho ndlela elula yokwazi ukuba i-sunflower iphumelele njani kwiimvula ze-UVA. I-FDA entsha yokubhaliweyo kwelanga, ngaphezu kwendlela yokubeka i-SPF 50+, yayifanele ifake inkqubo entsha ye-UVA yeenkwenkwezi ezine ukuze abazali bakwazi ukuqonda ukuba i-suncreen ilungiselela ukukhusela okuphantsi kwe-UV (enye inkwenkwezi) okanye i-UVA ephezulu ukukhuselwa (iinkwenkwezi ezine).
Iibhile ezitsha ziza kuchaza ngokucacileyo ukuba i-sunscreen inikezwa 'akukho khuselo lwe-UVA.'
Ngelishwa, uMgaqo wokugqibela kwi-labeling entsha ye-sunscreen ususe inkqubo yeenkwenkwezi, ucinga ukuba kuya kudideka. Ukuba i-sunscreen ngoku ibizwa ngokuba yi-Broad Spectrum, ngoko ikhusela i-UVVA.
SPF yeZimpahla
Iingubo zineenkqubo ezilinganisiweyo zokulinganisela ezifana nesilinganiselo se-SPF sobushushu belanga.
Nangona kunjalo, endaweni yesimo se-SPF, ezinye izambatho zinezinga eli - Ultraviolet Protection Factor (UPF), elingaqala ukususela kwi-15 (ukukhuselwa kwelanga elungileyo) ukuya kwi-50 + (ukukhusela ilanga kakhulu) ukubonisa ipesenteji ze-UVA kunye ne-UVB imitha. .
Ngako-ke i-SPF iyintoni ngempela?
Nangona uqonda ukuba i-sunscreen ye-SPF 15 ibimbela iipesenti ezingama-93 zemibala ye-UVB, oko kuthetha ntoni kwihlabathi lenene?
Indlela efanelekileyo yokucinga ngayo kukuba i-sunscreen ene-SPF 15 ikuvumela ukuba uhlale ilanga ixesha elide ngaphezu kwe-15 ngaphezu kokuba ungazange uvikeleke phambi kokuba ufumane ilanga. Ngokufanayo, i-sunscreen ye-SPF 30 ithetha ukuba unokuba ilanga elingama-30 ubude.
Ekubeni kunzima ukuthetha ngokuthe ngqo ukuba kuya kuthatha ixesha elingakanani ukuba umntu omnye athole ukushiswa kwelanga ngaphandle kokukhuselwa kwelanga, ixesha elide eliphindwe ngama-15 kunye namaxesha angama-30 ubude akuthethi nto. Kufuneka ukhangele uhlobo lolusu lomntu, apho ahlala khona, ixesha lonyaka, kunye nexesha lemihla ukuba bazi ukuba bangaba njani ixesha lokuhlala elangeni kwaye bangafumani ilanga. Umzekelo, umntu onombala okhanyayo elangeni eTexas ngo-2: 00 phakathi kwehlobo ephezulu nge-index ephakamileyo ye-UV iya kutshisa ngokukhawuleza, mhlawumbi ngaphantsi kwemizuzu engama-15, ngo-6pm kwaye ngokukhawuleza kunomntu onalo Ubumba obumnyama e-Idaho ngo-6 ntambama ebusika.
Ezinye izinto eziza kwandisa umngcipheko wengane yakho yokufumana ilanga ngokukhawuleza zibandakanya ukuthatha amayeza athile, kuquka amachiza amaninzi asebenzisa unyango , ephakamileyo, kunye neendawo ezinokuthi zibonise ilanga, njengekhephu nesanti.
Yaye ukhumbule ukuba i-sunscreen iyasebenza kangangoko emva kweeyure ezimbini kwaye kufuneka ibuye isetyenziswe, ngoko i-SPF 50 ye-sunscreen ayiyi kuvumela ukuba uhlale ilanga ixesha elingaphezu kwama-50 ubude kunokuba ungenakukhuselwa ngaphambi kokutshisa ilanga.
Ukubhengezwa: SPF
Kwaziwa kwakhona njenge: Fact Factor Protection, SPF Protection
Imizekelo: I-sunscreen ene-SPF 4 ayinikezeli ukukhusela kwelanga kubantwana.
> Wang, Steven Q. Isimo samanje solawulo lwelanga kwi-United States: Umgaqo wokugqibela wokuLawula kunye noLawulo lweeMithi ngokubhekiselele ekubhaleni nasekusebenziseni uvavanyo. J Am Acad Dermatol. Agasti 5, 2011.