Unqume ukuthi ukusebenzisa i-sunscreen yemvelo kuyisinqumo esilungile kuwe. Mhlawumbe unomuzwa wokuthi kuwukukhetha okunempilo kwakho nendawo ezungezile, noma isikhilimu selanga esinezithako ezisebenzayo zokwenziwa sicasula isikhumba sakho esizwela kakhulu.
Bese uzwa “ngama-nanoparticles” kwezinye izikhilimu zelanga zemvelo, kanye nolunye ulwazi olushaqisayo nolungqubuzanayo mayelana nezinhlayiya ezishiwo ezikunikeza isikhashana. Ngokujulile, ingabe ukukhetha i-sunscreen yemvelo kufanele kudide ngale ndlela?
Ngolwazi oluningi laphaya, lungabonakala lukhungathekisa. Ngakho-ke, ake sinqamule umsindo futhi sibheke ngokungachemi ama-nanoparticles ku-sunscreen, ukuphepha kwawo, izizathu zokuthi kungani uzowafuna esikrinini sakho selanga nalapho ungafuni.
Yiziphi Nanoparticles?
Ama-nanoparticles ayizinhlayiya ezincane kakhulu zento ethile. Ama-nanoparticles angaphansi kwama-nanometer angu-100 ubukhulu. Ukunikeza umbono othile, i-nanometer incane ngokuphindwe izikhathi eziyi-1000 kunogqinsi lomucu owodwa wezinwele.
Nakuba ama-nanoparticles angadalwa ngokwemvelo, njengamaconsi amancane e-spray yasolwandle njengesibonelo, ama-nanoparticles amaningi adalwa elebhu. Nge-sunscreen, ama-nanoparticles okukhulunywa ngawo yi-zinc oxide ne-titanium dioxide. Lezi zithako zihlukaniswa zibe yizinhlayiya ezinhle kakhulu ngaphambi kokuba zengezwe esikrinini sakho selanga.
I-Nanoparticles yaqala ukutholakala kuma-sunscreens ngawo-1980, kodwa ayizange ibambe kuze kube ngama-1990s. Namuhla, ungathatha isikrini sakho selanga esingokwemvelo esine-zinc oxide kanye/noma i-titanium dioxide siyizinhlayiya ezinosayizi we-nano ngaphandle kwalapho kucaciswe ngenye indlela.
Amagama athi “nano” nelithi “micronized” ayafana. Ngakho-ke, isikrini selanga esinelebula elithi "micronized zinc oxide" noma "micronized titanium dioxide" siqukethe ama-nanoparticles.
Ama-nanoparticles awatholakali nje kuma-sunscreens. Imikhiqizo eminingi ye-skincare kanye nezimonyo, njengezisekelo, ama-shampoos, nomuthi wokuxubha amazinyo, ivamise ukuqukatha izithako ezincane. Ama-nanoparticles nawo asetshenziswa kuma-electronics, izindwangu, ingilazi engazweli, nokunye.
I-Nanoparticles Gcina Izikrini Zelanga Zemvelo Ekushiyeni Ifilimu Emhlophe Esikhumbeni Sakho
Uma ukhetha i-sunscreen yakho yemvelo, unezinketho ezimbili; labo abanama-nanoparticles nalabo abangenawo. Umehluko phakathi kwakho kokubili uzovela esikhumbeni sakho.
Kokubili i-titanium dioxide ne-zinc oxide kuvunywe yi-FDA njengezithako zemvelo zokuvikela ilanga. Ngayinye inikeza ukuvikelwa kwe-UV ebanzi, nakuba i-titanium dioxide isebenza kangcono kakhulu uma ihlanganiswe ne-zinc oxide noma esinye isithako sokwenziwa sokuvikela ilanga.
I-Zinc oxide ne-titanium dioxide isebenza ngokubonisa imisebe ye-UV kude nesikhumba, ivikela isikhumba elangeni. Futhi ziyasebenza kakhulu.
Ngendlela yazo evamile, engeyona eye-nano, i-zinc oxide ne-titanium dioxide imhlophe qwa. Uma ifakwe esikrinini selanga, izoshiya ifilimu emhlophe ekhanyayo ecacile esikhumbeni. Cabanga ngomqaphi omhlophe onqamula ikhala—yebo, leyo i-zinc oxide.
Faka ama-nanoparticles. Isikrini selanga esenziwe nge-micronized zinc oxide kanye ne-titanium dioxide sigcoba esikhumbeni kangcono kakhulu, futhi ngeke sikushiye ukubukeka okunamathiselwe. I-ultra-fine nanoparticles yenza i-sunscreen ingabi ne-opaque kodwa isebenze ngendlela efanayo.
Ucwaningo Oluningi Luthola Ama-Nanoparticles Ku-Sunscreen Safe
Kusukela kulokho esikwaziyo manje, akubonakali sengathi ama-nanoparticles e-zinc oxide noma i-titanium dioxide ayingozi nganoma iyiphi indlela. Kodwa-ke, imiphumela yesikhathi eside yokusebenzisa i-micronized zinc oxide ne-titanium dioxide, iyimfihlakalo kancane. Ngamanye amazwi, abukho ubufakazi bokuthi ukusetshenziswa kwesikhathi eside kuphephe ngokuphelele, kodwa abukho ubufakazi bokuthi kuyingozi futhi.
Abanye baye bangabaza ukuphepha kwalezi zinhlayiya ezincane. Ngenxa yokuthi mancane kakhulu, angakwazi ukumuncwa esikhumbeni nasemzimbeni. Ukuthi kumuncwa kangakanani nokuthi kujula kangakanani kuncike ekutheni zinc oxide noma izinhlayiya ze-titanium dioxide zincane kangakanani, nokuthi zilethwa kanjani.
Ngokukhahlela, kwenzekani emzimbeni wakho uma i-zinc oxide noma i-titanium dioxide nano-particles imuncwa? Ngeshwa, ayikho impendulo ecacile yalokho, noma.
Kukhona ukuqagela ukuthi angase acindezele futhi alimaze amangqamuzana omzimba wethu, asheshise ukuguga ngaphakathi nangaphandle. Kodwa ucwaningo olwengeziwe ludinga ukwenziwa ukuze wazi ngokuqinisekile indlela eyodwa noma enye.
I-Titanium dioxide, lapho isesimweni sayo esiyimpushana futhi ihogeliwe, kukhonjiswe ukuthi idala umdlavuza wamaphaphu kumagundane elebhu. I-Micronized titanium dioxide iphinde ingene esikhunjeni ijule kakhulu kune-micronized zinc oxide, futhi i-titanium dioxide iye yabonakala idlula ku-placenta futhi ivala umgoqo wegazi nobuchopho.
Nokho, khumbula ukuthi okuningi kwalolu lwazi luvela ekudleni i-titanium dioxide (njengoba itholakala ekudleni okuningi osekupakishwe kusengaphambili namaswidi). Kusukela ocwaningweni oluningi lwe-micronized titanium dioxide kanye ne-zinc oxide esetshenziswayo, ngezikhathi ezithile kuphela lezi zithako ezitholakala esikhumbeni, futhi nalapho zazisendaweni ephansi kakhulu.
Lokho kusho ukuthi ngisho noma usebenzisa i-sunscreen equkethe ama-nanoparticles, angase angamunceli ngisho nangaphezu kongqimba lokuqala lwesikhumba. Inani elimunnyiwe liyahlukahluka kakhulu kuye ngokwakhiwa kwesikrini sokuvikela ilanga, futhi esiningi saso ngeke samunca ngokujulile uma sinjalo.
Ngolwazi esinalo njengamanje, isikrini selanga esiqukethe ama-nanoparticles sibonakala siphephile futhi sisebenza kahle kakhulu. Okungacace kangako umphumela ukusetshenziswa kwesikhathi eside komkhiqizo okungenzeka kube nawo empilweni yakho, ikakhulukazi uma usebenzisa umkhiqizo nsuku zonke. Futhi, abukho ubufakazi bokuthi ukusetshenziswa kwesikhathi eside kwe-micronized zinc oxide noma i-titanium dioxide kuyingozi, asazi nje ukuthi inamuphi umphumela (uma ukhona) esikhumbeni noma emzimbeni wakho.
Izwi Elivela Kahle
Okokuqala, khumbula ukuthi ukugqoka i-sunscreen nsuku zonke kungenye yezinto ezinhle kakhulu ongazenzela impilo yesikhathi eside yesikhumba sakho (futhi kuyindlela engcono kakhulu yokulwa nokuguga). Ngakho-ke, siyakuhalalisela ngokukhuthala ekuvikeleni isikhumba sakho!
Ziningi kakhulu izikhilimu zelanga zemvelo ezitholakalayo, kokubili izinketho ze-nano nezingezona ze-nano, nakanjani kukhona umkhiqizo okhona kuwe. Ukusebenzisa isikrini selanga esine-micronized (AKA nano-particle) zinc oxide noma i-titanium dioxide kuzokunikeza umkhiqizo onganamatheki futhi ohlikihlwa ngokugcwele.
Uma ukukhathazeka kwakho ngezinhlayiya ze-nano, ukusebenzisa i-sunscreen engeyona i-micronized kuzokunikeza izinhlayiya ezinkulu okungenzeka ukuthi zimuncwe isikhumba sakho. Ukuhwebelana ukuthi uzoqaphela ifilimu emhlophe esikhumbeni sakho ngemva kokufaka isicelo.
Enye inketho uma ukhathazekile ukugwema imikhiqizo ye-micronized titanium dioxide ngokuphelele, njengoba lesi sithako kuyisona esixhunyaniswe nezinkinga ze-heath ezingaba khona. Khumbula, nokho, ukuthi eziningi zalezi zinkinga bezivela ekuhogeleni noma ekungeniseni ama-nanoparticles e-titanium dioxide, hhayi ekumunceni isikhumba.
Isikrini selanga semvelo, kokubili esine-micronized futhi esingekho, siyahlukahluka kakhulu ekuhambisaneni nokuzwakala kwazo esikhumbeni. Ngakho-ke, uma uhlobo olulodwa ungaluthandi, zama olunye uze uthole olukusebenzelayo.
Isikhathi sokuthumela: Jul-12-2023