Izithako kwiiStrini ezivimbela i-UVVA Radiation
Usenokuba uvile ukuba ezinye i-sunscreens ayiyi kukukhusela ngokwaneleyo kwimiphumo emibi yelanga kwaye kufuneka uqonde ngaphezu kwenani lelebula. Ezi mpendulo zinyani ngokwenene, kwaye kubalulekile ukuzifundisa kwiimveliso ozidingayo kwisikrini. Makhe sithethe ukuba kutheni, kwaye yintoni okufuneka ukwazi ngaphambi kokuba uthenge i-sunscreen.
Ukukhuselwa kwelanga kunye ne-UV Ray
Iimveliso zelanga ziyimfuneko yokunakekelwa kwesikhumba ezisetyenziselwa ukukhusela i- photoaging kunye nomhlaza wesikhumba. Kuze kube kutshanje bekukholelwa ukuba ukuvimba ukukhanya kwe-UVB kunye nokushisa kwelanga kwakuyodwa imilinganiselo efunekayo ukukhusela ukulimala kwelanga. Isalathiso se- SPF senziwa ukulinganisela amandla okukhanya kwelanga ukuze uvimbele ukukhanya kwe-UVB.
Ngoku siyazi ukuba i-radiation UVA iwonakalisa ulusu. Nangona i-FDA icebise inkqubo yokulinganisa ekwazisa ukuba i-sunscreen ibimbela njani i-UVA, eso siphakamiso asikavunywa. Ngelishwa, indlela yodwa yokwazi malunga nekhono lokukhusela i-UVA yesikrini sobusuku kukujonga ubuncinane enye yezi zithako.
Iimiskredishithi ezithintela i-UVVA Radiation
Xa ukhangela i-sunscreen, kuyimfuneko ukufunda iilebula uze uqinisekise ukuba esinye sezidalwa ezikhankanywe apha kuluhlu. Ungazithembi ngolwazi lokupakisha oluthi i-suncreen "ilungile" okanye "igqibe." Yenza ukhetho lwakho oluthile olusekelwe kuphando lwakho.
Ungaphinda ukhangele kwiindlela ezahlukeneyo zokulungiselela izithako ezikhusela kwimimitha ye-UVA ukugqiba ukuba yeyiphi enye into efanelekileyo ifanelana neemfuno zakho.
Avobenzone
I-Avobenzone (i-Parsol 1789) yikhemikhali yodwa eyithatha i-spectrum yonke ye-UVA ukusuka kwi-310-400 nm. Ayinakubonelela nayiphi na ingxube ye-UVB.
Ingxaki kunye ne-avobenzone kukuba idiliza ilanga. Njengoko kunjalo, ama-50 ukuya kwengu-90 ekhulwini le-sunscreen ilahlekelwa lixa elilodwa emva kokukhanya kwelanga. Ezinye ze-UVB ezifana ne-OMC kunye ne-octoclene zenza i-avobenzone ibe namandla ngakumbi.
- Izinzuzo: Iibhloko ezipheleleyo ze-UVVA kwaye ayibangeli ukhenxiswa kwesikhumba
- Iingxaki: Ukuphuka ngokukhawuleza kwilanga ngaphandle kokuba kudibaniswe nabanye abavimba be-UVB
Benzophenones
I-benzophenones, i-oxybenzone, kunye ne-dioxybenzone yipokethi edibeneyo yezinto ezilungileyo nezimbi. Ziyisithako esiqhelekileyo kungekhona nje kwii-sunscreens kodwa nakwiimpawu zokukhusela ii-UV. Zi-absorbers ezilungileyo ze-UVA kodwa zithatha udidi lwe-UVB. I-benzophenones ayinakucasula njengePABA kodwa i-oxybenzone yinkxalabo yezona zonke izithako ze-sunscreen kwi-market.
- Iingenelo: Iibhloko zembonakalo ebanzi yemitha ye-UV kuquka i-UVA
- Iintsilelo: Ziyabangelwa kwaye azixhatshazi ngamanzi
Helioplex
U-Helioplex ngumgaqo-propati kaJohnson & Johnson Neutrogena. Olu qulunqo olutsha ludibaniselwano lwee-blockers ezahlukeneyo ze-UVA kunye ne-UVB kunye ne-stabilizers ezigcina izithako ezingabonakaliyo kwelanga ekugqibeleni. Yisitrato esilungileyo, esibanzi esicacisekileyo esicacisayo.
Kuza kwi-SPF ye-55, 70, no-85. Izithako ezisebenzayo kwi-Helioplex ezineziphumo zazo:
- I-Avobenzone (iipesenti ezi-3)
- I-Oxybenzone (iipesenti ezi-6)
- I-octocrylene (2.8 ekhulwini)
- Ukuzibandakanya (iipesenti ezili-10 kwi-SPF 55 kunye neepesenti ezili-15 kwi-SPF 70)
- I-Octisalate (iipesenti ezi-5)
I-Mexoryl SX (i-Ecamsole)
Amanye amagama kulo mdibaniso iquka i-terephthalylidene idampamphor sulfoic acid (TDSA), ecamsule, ne-Anthelios SX. I-Oreal Paris yavelisa i-mexoryl ibe isetyenziswe eYurophu ukususela ngo-1982. Ngo-2006 i-FDA yavuma ukusetyenziswa kwayo e-United States. Ihlanganiswe ne-avobenzone ne-octocrylene kwaye ithengiswe e-US nguLa Roche Posay njenge-Anthelios SX.
Esi sibhakabhaka se-block block-wide-spectrum e-resistor-spectrum, esomeleleyo elangeni, kwaye ingacasuli kwesikhumba. Izithako ezisebenzayo kwi-Anthelios SX kunye neziphumo zazo:
- I-Ecamsule (iipesenti ezi-2)
- I-Avobenzone (iipesenti ezi-2)
- I-octocrylene (iipesenti ezili-10)
Meradimate
I-meradimate iqulethe ingxube ye-menthyl anthranilate ehlinzeka ngokukhawulelana ne-UVVA imilayezo nangona i-coverage ayikho efana ne-Mexoryl okanye i-benzophenones.
Titanium Dioxide kunye ne-Zinc Oxide
I-titanium dioxide kunye ne-zinc oxide zibhekwa njengobusi belanga kunokuba zibe neelanga. Banikela ngokukhusela kwii-ray ze-UVA kodwa banqatshelwe ngokubonakala kwabo opaque. Iibhokhwe zisebenza njengabakhi bezinto ezibonakalayo, kubonakalisa imisebe ye-UV emva kwesikhumba.
Yiyiphi i-Sunscreen evimbelayo (Eminye iCanat Cancer) - I-Caveat
Sonke sivile kakhulu malunga nokubaluleka kwesikrini selanga, kodwa oko kufumaniswe ngenyameko engomnye wezinto ezintle zokuthintela loo mililo eshushuyo ukuba ifikelele kwesikhumba.
Kukho inkoliso yezifundo ezibonisa ukuba ufumane ixabiso elaneleyo le- vitamin D luncedo ekukhuseleni okungenani iindidi ezahlukeneyo zomhlaza zomhlaza ezingama-27, kuquka i- melanoma , kunye ne-sunscreen evimbela ukushisa kwelanga kuphela kodwa ukuxutywa kwe-vitamin D ngesikhumba sethu.
Oku akuthethi ukutyumla isikrini selanga. Thetha nodokotela wakho. Abanye oogqirha bancomela ukubambezela ukusetyenziswa kwesreencreen kuze kube yilapho usenelanga elineshumi ukuya kwe-15 imizuzu-ixesha elithathayo ukufumana umthamo ophilileyo we-vitamin D. Imibutho emininzi ye-dermatology iphinda icinga ngeziphakamiso ezikhoyo zelanga zesikrini ngenxa yesi sizathu.
Kunzima ukufumana yonke i-vitamin D oyifunayo ngendlela yokutya yedwa, nangona i-vitamin D3 isongezelelo yindlela enye yokufumana i-vitamin D. Into efanelekileyo kukuba unokufumana lula ukuba ufuna i-vitamin D ngaphezulu kunye nokuhlolwa kwegazi olulula. Gcina ukhumbule ukuba uluhlu oluqhelekileyo lukhulu kakhulu. Ngokomzekelo, ibhan yakho ibonisa ukuba i-30 ukuya ku-80 iyaqhelekileyo, kodwa ezinye iingcaphephe zibonisa ukuba amazinga angama-50 ukuya kuma-80 afanelekileyo ekunciphiseni ingozi yomhlaza. Ngako oko ucele inombolo yakho njalo. Inani elaneleyo le-vitamin D linokukunceda ukunciphisa umngcipheko wakho womhlaza, kodwa ukugqithiseleyo kunokubangelwa ngamatye enhlungu. (Ewe, inxalenye yobuhle bokufumana i-vitamin D yakho ilanga kukuba awukwazi ukufumana kakhulu.)
Imithombo:
Freitas, J., noL. Gaspar. In Vitro Photosafety and Efficiency Screening of Apigen, Chrysin, kunye ne-Beta-Carotene ye-UVA kunye noKhuseleka koVimba. I-European Journal ye-Pharmaceutical Science . 2016. 89: 146-53.
I-Stiefel, uC., NoW. W. Schwack. Ukukhutshwa kwezithombe kwixesha lokutshintsha - Uluhlu lwe-UV Ukusebenza kunye noKhuseleko, iiNkqubo zokuSenisekisa kunye neNkalo zoLawulo. International Journal of Cosmetic Science . 2015. 37 (1): 2-30.