Ingabe I-Sunscreen Yemvelo Ibambelela Ngokumelene Nesikrini Selanga Esivamile?

-Delile

• Yini EseFomula Yezimbiwa?
• Inkinga nge-Chemical Blockers
• Ngakho Ingabe Wonke Ama-Cream Asekelwe Ngamaminerali Angcono?
• Okufanele Ukubheke
• Buyekeza kwe-

Ngesikhathi sehlobo, umbuzo okuwukuphela kwawo obaluleke ngaphezu kokuthi "Iyiphi indlela eya olwandle?" ingabe "Ngabe kukhona umuntu olethe i-sunscreen?" Umdlavuza wesikhumba awulona ihlaya: Amanani e-melanoma abelokhu ekhuphuka eminyakeni engama-30 edlule, kanti iMayo Clinic muva nje ibike ukuthi izinhlobo ezimbili zomdlavuza wesikhumba zikhuphuke umhlathi wehla ngamaphesenti angu-145 namaphesenti angama-263 kusukela ngonyaka ka-2000 kuya ku-2010.

Yize sazi ukuthi i-sunscreen isiza ukuvikela umdlavuza wesikhumba, kungenzeka ukuthi uvikela isikhumba sakho ngendlela engaphansi kokucabanga kwakho ngokukhetha ifomula engafanele. I-Environmental Working Group (EWG) isanda kukhipha umhlahlandlela wabo wonyaka wezi-2017 wokuvikela ilanga, ilinganisela imikhiqizo eyi-1,500 ekhangiswa njengesivikelo selanga ukuze ivikeleke nokusebenza ngempumelelo. Bathola ukuthi amaphesenti angama-73 wemikhiqizo ayisebenzi kahle, noma aqukethe izithako, kufaka phakathi amakhemikhali aboshelwe ekuphazanyisweni kwehomoni nasekucasukeni kwesikhumba.

Abaphenyi babo baveza ukuthi noma iningi labantu ligxila kwi-SPF ephezulu, okufanele ngabe bakubheka izithako ezisebhodleleni. Izinhlobo ezingaba namakhompiyutha angaba yingozi noma acasulayo ngokuvamile awela esigabeni esibizwa ngokuthi i-mineral-based, noma "zemvelo," izikrini zelanga.

Ngokusobala, iningi lenu selivele linelukuluku mayelana nalesi sigaba: Inhlolovo Yemibiko Yabathengi yango-2016 ithole ukuthi cishe isigamu sabantu abayinkulungwane abacwaningiwe bathi bafuna umkhiqizo "wemvelo" lapho bethenga i-sunscreen. Kodwa ingabe izinto zokuvikela ilanga ezingokwemvelo zingafanelana ngempela nesivikelo esinikezwa amafomula amakhemikhali?

Ngokumangalisayo, odokotela besikhumba ababili baqinisekisa ukuthi bangakwazi. Nakhu okudingeka ukwazi.

Yini EseFomula Yezimbiwa?

Umehluko phakathi kwama-sunscreen wendabuko, amakhemikhali nezinhlobonhlobo zamaminerali wehlela ohlotsheni lwezithako ezisebenzayo. Okhilimu abasuselwa kumaminerali basebenzisa izivimbeli-zinc oxide kanye / noma i-titanium dioxide-eyakha isithiyo sangempela esikhunjeni sakho futhi ibonakalise imisebe ye-UV. Abanye basebenzisa ama-block blocker-imvamisa inhlanganisela ye-oxybenzone, avobenzone, octisalate, octocrylene, homosalate kanye / noma i-octinoxate-edonsa imisebe ye-UV ukuyisakaza. (Siyazi, kungumlomo!)

Kunezinhlobo ezimbili zemisebe ye-UV: i-UVB, ebhekele ukushiswa yilanga kwangempela, nemisebe ye-UVA, engena ijule. Izivimbeli ezisekelwe kumaminerali, ezingokwenyama zivikela kukho kokubili. Kodwa njengoba izivimbeli zamakhemikhali zimunca imisebe esikhundleni salokho, lokhu kuvumela i-UVA ukuthi ifinyelele lezo zingqimba ezijulile zesikhumba sakho futhi yenze umonakalo, kuchaza uJeanette Jacknin, M.D., udokotela wezifo zesikhumba osuselwe eSan Diego nombhali wencwadi ethi Imithi Ehlakaniphile Yesikhumba Sakho.

Inkinga nge-Chemical Blockers

Okunye okukhathaza kakhulu ngabavimbeli bamakhemikhali umqondo wokuthi baphazamisa ukukhiqizwa kwamahomoni. Lokhu yinto yokufunda kwezilwane namaseli okuqinisekisile, kepha sidinga ucwaningo olwengeziwe ngabantu ukusitshela ukuthi lusebenza kanjani ngqo esikrinini selanga (lingakanani ikhemikhali elifuthwayo, likhishwa masinyane kanjani, njll.), Kusho i-Apple Bodemer, MD, uprofesa we-dermatology e-University of Wisconsin.

Kepha izifundo ezikula makhemikhali, ngokujwayelekile, ziyethusa ngomkhiqizo okufanele sisabalalise nsuku zonke. Ikhemikhali elilodwa ikakhulukazi, i-oxybenzone, lixhunyaniswe nengozi ephezulu ye-endometriosis kwabesifazane, ikhwalithi yesidoda empofu emadodeni, ukungezwani komzimba nesikhumba, ukuphazamiseka kwamahomoni, nokulimala kwamangqamuzana-ne-oxybenzone kungezwa cishe kumaphesenti angama-65 ezindawo zokuvikela ilanga ezingezona ezamaminerali i-EWG's 2017 sunscreen database, uDkt Jacknin uyakhomba. Futhi isifundo esisha esivela eRussia sishicilelwe kumagazini I-Chemosphere ithole ukuthi ngenkathi ikhemikhali ejwayelekile evikela ilanga, i-avobenzone, ivame ukuphepha yodwa, lapho ama-molecule ehlangana namanzi aneklorini nemisebe ye-UV, yehla ibe izakhi ezibizwa ngama-phenols nama-acetyl benzenes, aziwa ukuthi anobuthi obumangalisayo.

Elinye ikhemikhali elikhathazayo: i-retinyl palmitate, engadala ukukhula kwezimila zesikhumba nezilonda lapho isetshenziswa esikhumbeni elangeni, uyanezela. Ngisho nasekhasini elingaxwayisi kangako, i-oxybenzone namanye amakhemikhali athanda ukudala izinkinga ngokuthambekela kwesikhumba nokucasuka, kuyilapho amaminerali amaningi engenzi kanjalo, uDkt.Bodemer uthi - yize engeza ukuthi lokhu kuyinkinga yabantu abadala abanesikhumba esibucayi nezingane .

Ngakho Ingabe Wonke Ama-Cream Asekelwe Ngamaminerali Angcono?

Okhilimu abasekelwe kumaminerali bangokwemvelo kakhulu, kodwa ngisho nezithako zabo ezihlanzekile zidlula inqubo yamakhemikhali ngesikhathi sokwakhiwa, uDkt. Bodemer uyacacisa. Futhi izikrini zelanga eziningi ezenzelwe amaminerali zinamakhemikhali avimbela kuzo, nazo. "Kuvamile ukuthi kutholakale inhlanganisela yamabhlokhi avimba umzimba kanye namakhemikhali," uyanezela.

Lokhu kushiwo, njengoba sazi okuncane kakhulu ngalokho okwenziwa ngabavimbeli bamakhemikhali emizimbeni yethu, bobabili ochwepheshe bayavuma ukuthi ukubheja kwakho okungcono kakhulu ukufinyelela ama-sunscreen amaminerali anezivimbi ezingokomzimba, ikakhulukazi uma unesikhumba esibucayi.

Ukuvikelwa okuphezulu kuza ngentengo ephezulu, noma kunjalo: "Okubi kakhulu ukuthi ama-sunscreen amaningi emvelo anokuxinana okuphezulu kwe-zinc ne-titanium dioxide amhlophe kakhulu futhi awajabulisi ngokimonyo," kusho uDkt. Jacknin. (Cabanga abatshuzi abanomugqa omhlophe wehle emakhaleni abo.)

Ngenhlanhla, abakhiqizi abaningi baye baphikisana nalokhu ngokwenza amafomula anama-nanoparticles, okusiza i-titanium dioxide emhlophe ibukeke esobala futhi empeleni inikeza ukuvikelwa okungcono kwe-SPF-kodwa ngezindleko zokuvikela okubi kakhulu kwe-UVA, kusho uDkt Jacknin. Ngokufanelekile, ifomula inebhalansi yezinhlayiya ezinkulu ze-zinc oxide zokuvikela okukhulu kwe-UVA, nezinhlayiya ezincane ze-titanium dioxide ukuze umkhiqizo uqhubeke ucace.

Okufanele Ukubheke

Ngenkathi ama-sunscreen amaminerali ngokuvamile angcono esikhunjeni sakho, Kanjani okungcono kakhulu kuncike kokunye okungaphakathi. Njengokupakisha kokudla, igama "lemvelo" kulebula alinaso isisindo. "Wonke ama-sunscreens anamakhemikhali kuwo, kungakhathaliseki ukuthi abhekwa njengemvelo noma cha. Ukuthi zingokwemvelo ngempela kuncike kumkhiqizo, "kusho uDkt Bodemer.

Bheka ama-sunscreen anezithako ezisebenzayo i-zinc oxide ne-titanium dioxide.Cishe uzothola ukukhetha okungcono kakhulu esitolo sangaphandle noma esitolo sokudla esikhethekile, kepha nemikhiqizo etholakala kuyo yonke indawo efana neNeutrogena ne-Aveeno inezindlela ezakhiwe ngamaminerali. Uma ungazitholi lezi eshalofini, okulandelayo okuhle ukugwema lawo anamakhemikhali athi isayensi ayingozi kakhulu: i-oxybenzone, i-avobenzone, ne-retinyl palmitate. (Iphuzu lePro: Uma unesikhumba esibucayi, funa amabhodlela afakwe ilebula yezingane, uDkt Bodemer uyabelana.) Ngokuqondene nezithako ezingasebenzi, uDkt. Bodemer uncoma ukuthi kubhekwe amabhodlela abhalwe ukuthi "ezemidlalo" noma "amelana namanzi" kunesisekelo esithile , njengoba lezi zizohlala isikhathi eside ngomjuluko namanzi. Futhi ngenkathi iningi lethu lifundiswa ukubheka i-SPF, ngisho ne-FDA ibiza i-SPF ephezulu ngokuthi "idukisa ngokwemvelo." I-EWG ikhombisa ukuthi kusebenza kakhulu kakhulu ukusebenzisa isihenqo selanga esiphansi se-SPF kunokuphakama kwesigamu ngenhliziyo. UDkt. Bodemer uyakuqinisekisa ukuthi: Zonke izivikelo zelanga zizoguga, ngakho-ke noma ngabe i-SPF noma izithako ezisebenzayo, udinga ukufaka isicelo okungenani njalo emahoreni amabili. (FYI nazi ezinye izinketho zokuvikela ilanga ezimele ukuhlolwa kwethu komjuluko.)

Futhi noma kungahle kube nzima ukukufaka, ungcono ukunamathela ku-lotion-lawo ma-nanoparticles anciphisa ubumnene ngokuvamile aphephile, kepha angadala ukulimala kwamaphaphu uma uwahogela ngomshini wokufafaza, uDkt Jacknin uyanezela. Olunye uhlelo olubalulekile lwe-FYI: Ngenxa yokuthi i-sunscreen eyiminerale ivikela ngokwenza umgoqo, ufuna ukucwebezela imizuzu eyi-15 kuye kwengama-20 ngaphambi kokuthi uphume ngaphambi kokuthi uqale ukunyakaza nokujuluka-ukuqinisekisa ukuthi unefilimu elinganayo esikhumbeni sakho uma usushaywe ilanga. , kusho uDkt. Bodemer. (Ngohlobo lwamakhemikhali, yibeke emaminithini angama-20 kuye kwangama-30 ngaphambi kokushiswa yilanga ngakho-ke inesikhathi sokungena ngaphakathi.)

I-EWG ilinganisela lonke uhlobo lwesikrini selanga ukuze lusebenze kahle nokuphepha, ngakho-ke hlola imininingwane yabo ukuze ubone ukuthi ifomula yakho oyithandayo iwela kuphi. Imikhiqizo yethu embalwa esiyithandayo ehlangabezana nemihlahlandlela yalezi zinhlaka kanye ne-EWG: Beyond Coastal Active Sunscreen, Badger Tinted Sunscreen, neNeutrogena Sheer Zinc Dry-Touch Sunscreen.

Khumbula noma lokho empini, noma yikuphi uhlobo lwe-sunscreen lungcono kune cha isivikelo selanga. "Siyazi ukuthi imisebe ye-UV iyi-carcinogen yomuntu-ibangela ngempela uhlobo lomdlavuza wesikhumba ongelona i-melanoma, futhi ukusha ikakhulukazi kuhlotshaniswa kakhulu ne-melanoma. Ukuphuma elangeni kunamathuba aphezulu kakhulu okuba kubangele umdlavuza kunokufaka i-sunscreen esikhumbeni sakho; "UDkt. Bodemer uyanezela.

Buyekeza kwe-