I-SPF kunye neeNtsomi zoKhuseleko lweLanga zokuyeka ukukholelwa, i-Stat

Umxholo

• Intsomi: Kufuneka unxibe i-sunscreen kuphela xa uchitha usuku ngaphandle.
• Intsomi: I-SPF 30 inika ukhuseleko oluphindwe kabini njenge-SPF 15.
• Intsomi: Ulusu olumnyama alunakutshiswa lilanga.
• Intsomi: Ukhuselekile ukuba uhlala emthunzini.
• Intsomi: Kungcono ukusebenzisa i-cream cream kune-spray.
• Intsomi: Zonke izinto zokuthambisa ilanga zisebenza ngendlela efanayo.
• Intsomi: I-makeup yakho ine-SPF kuyo, akuyomfuneko ukuba usebenzise i-sunscreen eyahlukileyo.
• Ubuxoki: Sukungatshisi kuyingozi, kodwa ukufumana i-tan kulungile.
• Ubuxoki:Inombolo ye-SPF kuphela kwento ekufuneka ujonge kuyo xa uthenga i-sunscreen.
• Uphengululo lwe

Ngeli xesha ebomini, sele (ngethemba!) usibethelele isikhuselo-langa se-M.O.…okanye uyenzile? Akukho sidingo sokuya sibomvu ebusweni ngenxa yeentloni (okanye elangeni, ngenxa yalonto). Nyusa ukukhanya kwelanga ngoncedo oluncinci kwiingcali zedermatologists.

Apha, izinto eziluncedo zichitha iinkolelo eziqhelekileyo zokukhusela ilanga kwaye uphendule imibuzo yakho enkulu ye-SPF ukuze uqiniseke ukuba ulusu lwakho lukhuselwe ngokufanelekileyo ngalo lonke ixesha lonyaka.

Intsomi: Kufuneka unxibe i-sunscreen kuphela xa uchitha usuku ngaphandle.

Phinda emva kwam: Ukukhuselwa kwelanga akunakuxoxisana ngeentsuku ezingama-365 ngonyaka, nokuba uphi, wenza ntoni, okanye injani imozulu. "Uninzi lokuvezwa lilanga abantu abakufumanayo ngabom kwaye kuyenzeka," utshilo uJoshua Zeichner, MD, umlawuli wezokuthambisa kunye nophando lweklinikhi kwezesikhumba kwiSibhedlele iMount Sinai kwisiXeko saseNew York. "Abantu abaqondi ukuba kungexesha elifutshane elichithwe ngaphandle-uhambo lwabo lokuya emsebenzini, ukuqhuba imisebenzi-ukuba ilanga lonakalise ulusu lwabo."

Loo monakalo uyakhula; ixesha elifutshane elichithwe ngaphandle kwe-sunscreen lineziphumo ezinobungozi kwaye zihlala ixesha elide. Kwaye ngelixa ukutshisa imitha ye-UVB kunamandla ehlotyeni, imitha ye-UVA (ebangela ukwaluphala kunye nomhlaza wolusu) zinamandla afanayo unyaka wonke kwaye zingena nakwimini enamafu. Ngoku, ndiyayazi into oyicingayo: ngaba ndisafuna i-sunscreen ukuba ndichitha imini ngaphakathi? Ewe-nokuba uvalelwe yedwa. Ngethamsanqa, isisombululo silula. Yenza i-sunscreen ibe yinxalenye yemihla ngemihla yesiqhelo sakho, obugquma bobabini ubuso bakho kunye nezinye iindawo eziveziweyo, njengentamo yakho, isifuba, kunye nezandla-onke amabala aqhelekileyo abantu balibale ukukhusela, ngokukaGqirha Zeichner. (Kodwa kuthekani ukuba uyathanda ukunxiba izithambiso zobuso? Ewe, ungamalekozela i-SPF phantsi kwesiseko sakho okanye ukhethe enye yezi zikhuseli zobuso zifakwe umbala zingcono.)

Intsomi: I-SPF 30 inika ukhuseleko oluphindwe kabini njenge-SPF 15.

Ingabonakala ngathi iyaphikisana, kodwa imigaqo esemgangathweni yemathematics ayisebenzi xa kufikwa kumanani e-SPF. "I-SPF 15 ibhloka iipesenti ezingama-94 zemitha ye-UVB, ngelixa i-SPF engama-30 ibhloka ipesenti ezingama-97," ucacisa watsho uGqirha Zeichner. Ukunyuka kokhuseleko xa ungaphezulu kwe-SPF 30 kukwandisa kuphela, ngoko ke kule meko, i-sunscreen ephezulu ye-SPF ayisiyiyo eyona nto ingcono.

Ke, ukuba uhleli apho uzibuza "yeyiphi i-SPF endiyifunayo?" Impendulo emfutshane yi-SPF 30 yokusetyenziswa kwemihla ngemihla, ngokukaGqirha Zeichner. (Esi sisindululo seAmerican Academy of Dermatology okanye i-AAD.) Oko kwathiwa, ayisiyombono imbi ukuphosakela phezulu kwaye uhambe ne-SPF 50 xa uselwandle okanye echibini, utshilo."Ukuze ufumane inqanaba lokhuselo elibhalwe kwibhotile, kuya kufuneka ufake isicelo esaneleyo kwaye uphinde ufake isicelo ngokungaguquguqukiyo, nto leyo uninzi lwabantu olungayenziyo," utshilo. "Ngokukhetha i-SPF ephezulu, unceda ukubuyisela oku kungangqinelani."

Ngoku, i-sunscreen ephezulu ye-SPF oza kuyibona kwiishelufu zevenkile yi-100, kodwa kwakhona, oko akuyi kukunika ngokuphindwe kabini inani lokukhusela njenge-SPF 50. Ukunyuka ukusuka kwi-SPF 50 ukuya kwi-SPF 100 kunika umahluko ongenakulinganiswa wokuvimba i-98 ekhulwini. vs. Iipesenti ezingama-99 zemitha ye-UVB, ngokwahlukeneyo, ngokweQela eliSebenzayo lokusiNgqongileyo. Singasathethi ke, ezi SPF ziphezulu esibhakabhakeni zinokwenza abantu bacinge ukuba banokutsiba kwisicelo kwakhona. "Kunokubakho ukukhuselwa okungeyonyani nge-SPF ye-100," u-Anna Chien, MD, unjingalwazi oncedisayo wesikhumba e-Johns Hopkins School of Medicine, exelelwe ngaphambili. Ubume. Zonke ezi zizathu zokuba kutheni ezo SPF 100s zinokuba yinto yexesha elidlulileyo; Kunyaka ophelileyo, uLawulo lwezoKutya kunye noLawulo lweziyobisi (i-FDA) lwacebisa ukuba ileyibheli ephezulu ye-SPF ifakwe kwi-60 +. (Idibeneyo: I-FDA ijonge ukwenza iinguqulelo ezinkulu kwi-sunscreen yakho.)

TL;DR— Eyona nto ubheja ngayo kukusebenzisa i-SPF 30 yonke imihla, gcina i-SPF engama-50 esandleni ngamaxesha apho uzakuba selangeni elithe ngqo, kwaye qinisekisa ukufaka isicelo (kwaye uphinde ufake isicelo) zombini njengoko uyalelwe.

Intsomi: Ulusu olumnyama alunakutshiswa lilanga.

Ubuhlanga obunesikhumba esimnyama abuxolelwanga kumgaqo wesikrini semihla ngemihla. "Ibala lesikhumba libonelela kuphela ngokulingana ne-SPF 4," kuchaza uGqr. Zeichner. Ngaphandle kokutsha, kukwakho nomngcipheko wendalo wokuguga kunye nomhlaza wolusu, kuba imitha ye-UVA ichaphazela ulusu ngokulinganayo-nokuba ngowuphi umbala. Ngapha koko, zombini i-AAD kunye ne-FDA ixhasa ukuba wonke umntu, nokuba ungakanani ubudala, isini, okanye ubuhlanga, unokufumana umhlaza wolusu kwaye, ke, unokufumana inzuzo ekusebenziseni i-sunscreen rhoqo. Umgca wenyani: Zonke iithoni zolusu kunye neentlobo zichaphazeleka kukonakaliswa lilanga kwaye kufuneka baphaphe ngokhuseleko.

Intsomi: Ukhuselekile ukuba uhlala emthunzini.

Kuyavunywa, ukuhlala emthunzini kuyindlela engcono kunokuhlala phantsi kwelanga elithe ngqo, kodwa akusiyo indawo yokukhusela ilanga, ulumkisa uDkt. Zeichner. "Imitha ye-UV ibonakalisa iindawo ezikungqongileyo, ngakumbi xa ukufuphi nomzimba wamanzi." Ngamanye amazwi, imisebe ifikelela kuwe, naphantsi kweambrela. Ngapha koko, uphononongo olupapashwe kwi- Unyango lweJAMA bafumanise ukuba abantu abahleli phantsi kwesambrela saselwandle ngaphandle kwescreen selanga kunokwenzeka ukuba batshise kunabo basebusuku benxibe i-sunscreen. Endaweni yokuxhomekeka emthunzini kuphela, zithathe njengenxalenye yezixhobo zakho zokukhusela ilanga. UGqr. Zeichner ucebisa ngelithi: “Funa umthunzi, nxiba iimpahla ezikhuselayo, yaye, ngokuqinisekileyo, ukukhuthalele ukuthanjiswa ngokuzikhusela elangeni. (Jonga kwakhona: Iimveliso ze-Smart SPF ezingezizo i-sunscreen)

Intsomi: Kungcono ukusebenzisa i-cream cream kune-spray.

Zonke iifomula ze-sunscreen-iikhrim, into yokuthambisa, izitshizi, izinti-ziya kusebenza ngokulinganayo ukuba zisetyenziswe ngokuchanekileyo, ngokukaGqirha Zeichner. (Ke isebenza njani i-sunscreen, ngokuchanekileyo? Iinkcukacha ezizayo ezizayo.) Kodwa awungekhe nje ufefe ilifu lescreen emzimbeni wakho okanye ngokuswayipha ngokungathandekiyo kwinduku: "Kuya kufuneka ubeke umzamo omncinci wokudibana kwindlela yokwenza isicelo. "uyongeza. Cinga ngemigaqo yakhe eluncedo: Ukufafaza, bamba ibhotile nge-intshi kude nomzimba wakho kwaye ufefe umzuzwana omnye ukuya kwemibini kwindawo nganye okanye kude kube kukhanya kolusu, emva koko thambisa kakuhle. Ngaba ukhetha iintonga? Hlikihla emva naphambili ngapha kwendawo nganye izihlandlo ezine ukuze ufake isixa esaneleyo semveliso. (Idibeneyo: Eyona ndlela ilungileyo yokuCoca iiLanga ezingaLomisi ulusu lwakho)

Ukuthetha ngokusetyenziswa kwescreen elangeni, kubalulekile ukuba ufake isicelo ngaphambi kokuphuma ngaphandle kuba kuthatha imizuzu eli-15 kulusu lwakho ukufunxa i-sunscreen, ke ngoko, kukhuselwe. Kodwa le ayisiyonto inye neyenziweyo- kuya kufuneka uthambise i-sunscreen imini yonke. Ke, i-sunscreen ihlala ixesha elingakanani? Kuxhomekeka: Njengomgaqo ngokubanzi, kuya kufuneka uswayipe kwiscreen selanga rhoqo emva kweeyure ezimbini, ngokwe-AAD. Ukubila okanye ukuqubha? Emva koko kuya kufuneka uphinde ufake isicelo rhoqo, nokuba imveliso inamanzi.

Intsomi: Zonke izinto zokuthambisa ilanga zisebenza ngendlela efanayo.

Ukuphendula umbuzo othi, "isebenza njani i-sunscreen?" Okokuqala kufuneka wazi ukuba i-sunscreens yahlulwe yangamacandelo amabini: imichiza kunye nomzimba. Izinto zangaphambili zibandakanya izinto ezinje nge-oxybenzone, avobenzone, kunye ne-octisalate, esebenza ngokufunxa imitha eyingozi ukuyichitha. Isikhuseli selanga sekhemikhali sithande ukuba lula ukusihlikihla ngaphandle kokushiya intsalela emhlophe. Ngakolunye uhlangothi, i-sunscreens ye-sunscreens "isebenza njengekhaka" ukuze ihlale phezu kwesikhumba sakho kwaye, ngoncedo lwezithako ezifana ne-zinc oxide kunye ne-titanium dioxide, iphazamisa imitha yelanga eyingozi, ngokutsho kwe-AAD.

Iscreen selanga kunye neSunblock

Ngoku ukuba uqonda iziseko zendlela esebenza ngayo i-sunscreen, lixesha lokuba ujongane nesinye isihloko esididekileyo: i-sunscreen vs. sunblock. Kwithiyori, i-sunscreen ifunxa imitha ye-UV kwaye iyasasaza phambi kokuba babe nethuba lokonakalisa ulusu lwakho (okt ifomula yamachiza) ngelixa isithintelo selanga sihleli ngaphezulu kwesikhumba sakho kwaye sithintela ngokoqobo imitha (okt ifomula yomzimba). Kodwa emva ngo-2011, i-FDA yagweba ukuba nayiphi na yonke imveliso yokukhusela ilanga, ngaphandle kwezithako abazisebenzisayo, kunokubizwa ngokuba lilanga kuphelaizikrini. Ke, ngelixa abantu basenokuthi basebenzise la magama mabini ngokutshintshiselanayo, ngokuthetha ngobuchwephesha, akukho nto injengokuvimba ilanga.

Nokuba ukhetha ikhemikhali okanye ifomula yomzimba iyabila ngokwenene kumcimbi wokhetho lomntu: ezo zeekhemikhali zihlala ziziva zilula, ngelixa iifomula zomzimba zilungile kubantu abanolusu olubuthathaka. Oko kwathiwa, i-sunscreens yeekhemikhali iye yaqwalaselwa ngokukhawuleza, ngenxa yophando olutshanje olwenziwe yi-FDA oluye lwafumanisa ukuba izithako ezithandathu eziqhelekileyo zeekhemikhali ze-sunscreen zifakwe kwigazi kumanqanaba aphezulu kunomqobo wokhuseleko we-arhente. Kuyothusa ukuthetha okuncinci, kodwa oko akuthethi ukuba ezi zithako azikhuselekanga—kuba nje uphando olongezelelekileyo kufuneka lwenziwe. Ngelishwa, nangona kunjalo, ayisiyiyo kuphela ifuthe elibi leekhemikhali elangeni elinokubangela. Uphando lucebisa ukuba i-oxybenzone, enye yezona zinto zisetyenziswa ngokuqhelekileyo kwiifomyula zemichiza, inokuba yingozi okanye "ityhefu" kwiingqaqa zekorale. Esi sesinye isizathu sokuba kutheni i-sunscreens yendalo okanye yamaminerali iqhubekile ukufumana ukuthandwa kunye nomdla. (Jonga kwakhona: Ngaba i-sunscreen yendalo ibambe ngokuchasene neLanga eliqhelekileyo elangeni?)

Ekupheleni kosuku, akukho nto iphikayo ukuba, "umngcipheko wokungasebenzisi i-sunscreen ugqwesa izibonelelo zokungasinxibi i-sunscreen," uDavid E. Bank, M.D., ibhodi eqinisekisiweyo yedermatologist esekelwe eNew York, ngaphambili uxelele Ubume. Ndisakhathazekile? Namathela kwiifomula zomzimba, njengoko i-FDA ithatha zombini i-zinc oxide kunye ne-titanium dioxide njengekhuselekile kwaye iyasebenza. (Idibeneyo: I-FDA ijonge ukwenza iinguqulelo ezinkulu kwiscreen sakho selanga)

Intsomi: I-makeup yakho ine-SPF kuyo, akuyomfuneko ukuba usebenzise i-sunscreen eyahlukileyo.

Kububulumko ukusebenzisa izithambiso nge-SPF (kokhuselo olongezelelekileyo, ngcono!), Kodwa ayisiyondlela yokuthambisa i-sunscreen (kwaye ayizizo "iipilisi zelanga"). Yicinge njengendawo yesibini yokuzikhusela, kunokuba ube ngumthombo wakho kuphela wokukhusela ilanga. Ngoba? Kwabaqalayo, ngekhe usisebenzise isiseko sakho okanye umgubo kubuso bonke bakho, utshilo uGqirha Zeichner. Kwaye, kuya kuthatha i-makeup eninzi ukufumana inqanaba le-SPF eliphawulwe kwibhotile, kwaye uninzi lwabasetyhini alunxibi kangako, uyongeza. Isixhobo sokuthambisa esine-sunscreen silungile, ukuba nje si-broad-spectrum kunye ne-SPF 30 kwaye usebenzisa ngokwaneleyo (ubuncinci ubungakanani benani lenikeli ebusweni bakho).

Ubuxoki: Sukungatshisi kuyingozi, kodwa ukufumana i-tan kulungile.

Umbala obomvu we-lobster ayisiyiyo kuphela into ebonisa ulusu olonakeleyo. Ukuba ucinga ukufezekisa oko kukhazimla akuyongxaki, thelekisa kwakhona. Naluphi na utshintsho kumbala wolusu-nokuba lujika lube bomvu okanye lumnyama-luphawu lokonakaliswa lilanga, utshilo uGqirha Zeichner. Cinga imigca ye-tan uphawu olumkisayo lokuba lixesha lokunyusa ukhuseleko lwakho lwelanga, umthetho. Kwelo nqaku, ngaba i-sunscreen iyakuthintela ukutshisa? Ewe. Iscreen selanga siyakuthintela ukufotwa, kodwa kwakhona, kufuneka ufake isicelo-kwaye uphinde usisebenzise-ngokuchanekileyo kwaye usebenzise ngokwaneleyo. Kumntu omdala ophakathi, "okwaneleyo" malunga ne-1 ounce ye-sunscreen (malunga nesixa esithathayo ukugcwalisa iglasi yokudutyulwa) ukugubungela ngokulinganayo umzimba ukusuka entloko ukuya ezinzwaneni, ngokutsho kwe-FDA.

Ubuxoki:Inombolo ye-SPF kuphela kwento ekufuneka ujonge kuyo xa uthenga i-sunscreen.

Kukho ulwazi oluninzi olufumaneka kwileyibhile yelanga, nangona inokudideka uninzi. Kuphononongo luka-2015 olupapashwe kwi Unyango lweJAMA, Yiipesenti ezingama-43 zabantu kuphela abayiqondayo intsingiselo yexabiso le-SPF. Ivakala iqhelekile? Sukuba nexhala! Ngokuqinisekileyo awuwedwa-kwaye, uGqr. Zeichner ulapha ukunceda ukucacisa esi siphithiphithi esiqhelekileyo kunye nabanye. Apha, kufuneka ujonge ntoni xa uthenga i-sunscreen kunye nento nganye ebalulekileyo, ngokukaGqirha Zeichner.

I-SPF: Ukukhusela iLanga. Oku kubonisa kuphela into yokhuselo ngokuchasene nemitha ye-UVB. Soloko ujonga igama elithi "ububanzi obubanzi," obubonisa ukuba imveliso iyazikhusela kwimitha yeUVA kunye neUVB. (Ngokwesiqhelo uya kulifumana eli gama libekwe phambili ngaphambili kwiphakheji.)

Iyawakhaba amanzi: Oku kunokuba ngaphambili okanye ngasemva ebhotileni kwaye kubhekiselele kwithuba elingakanani le fomula inokumelana namanzi okanye ukubila, okuyimizuzu engama-40 ukuya kuma-80. Ngelixa kungekho mfuneko yokusebenzisa ukhetho olunganyangekiyo ngamanzi kwiinjongo zemihla ngemihla, kunyanzelekile ukuba unxweme okanye iphuli okanye xa uza kwenza umthambo ngaphandle. Kwaye ibango lexesha kufuneka libe lelona lide ekuhambeni ngaphambi kokufaka isicelo kwakhona. Ukuze ukhuseleke, phinda ufake isicelo nangaliphi na ixesha uphuma emanzini. (Eyeleleneyo :: Izikhuseli zelanga zokuSebenzisa eziNgamunciyo-okanye ziqhube okanye zikushiye utyebile)

Umhla WOKUPHELELWANgokuchasene nenkolelo edumileyo, ngekhe usebenzise ibhotile enye yescreen selanga obusisebenzisa ehlotyeni elidlulileyo. Ingaba i-sunscreen ihlala ixesha elingakanani? Oku kuxhomekeke kwifomula ethile, kodwa umgaqo olungileyo jikelele wesithupha kukujula nantoni na kunyaka omnye emva kokuyithenga, okanye xa sele iphelelwe lixesha. Uninzi lwe-sunscreens luya kuba nomhla wokuphelelwa yisikhathi ugxininiswe phantsi kwebhotile okanye kwipakethe yangaphandle ukuba ifika kwibhokisi. Ngoba? "Imichiza ethambisayo ethintela ilanga ibola, iyenze ingasebenzi," u-Debra Jaliman, MD, umhlohli wezonyango kwi-Mount Sinai School of Medicine, waxelelwa ngaphambili Ubume.

Ayiyiyo iComedogenic: Oku kuthetha ukuba ayizukuthintela ii-pores, ke iintlobo ezinobunzima bamabala kufuneka zihlale zijonga eli xesha. (Jonga kwakhona: Esona sikhuseli selanga sobuso kulo lonke uhlobo lolusu, ngokutsho kwabathengi baseAmazon)

Iphaneli yesithako: Kufunyenwe ngasemva kwebhotile, olu luhlu lwezithako ezisebenzayo kunye nendlela onokuthi uxele ngayo ukuba i-sunscreen iyikhemikhali okanye yeyokwenyama. Owokuqala uquka izithako ezifana ne-oxybenzone, i-avobenzone, kunye ne-octisalate; I-zinc oxide kunye ne-titanium dioxide zezona zinto zixhaphakileyo emzimbeni.

Iimpawu zokusetyenziswa: Ezi zinto zifunwa yifemografi esandula ukupasiswa ye-FDA, eqaphela ukuba, ngokusetyenziswa ngokufanelekileyo, i-sunscreen inokukhusela ekutshisweni lilanga, umhlaza wolusu, kunye neempawu zokwaluphala.

Utywala-simahla: Khangela oku xa ukhetha i-sunscreen yobuso, kuba utywala bunokomisa kulusu.

Uphengululo lwe