Nciphisa ingozi yokushisa ilanga nomdlavuza wesikhumba
Uma ngabe uke waya esikhungweni se-sunscreen esitolo sezidakamizwa sendawo, uyazi ukuthi kungaba nzima kangakanani. Amabhodlela nama-tubes onke agcwele izifinyezo, njenge-SPF, UVA, ne-UVB. Futhi okunye okukhethwa kukho okufana nokuvinjelwa kwamanzi nokungena kwamanzi kunganezela ekudidekeni. Futhi, ungakhohlwa uhlu olubanzi lwemikhiqizo okufanele ukhethe kuzo.
Kodwa, uma ukhululekile futhi unganaki ukuthatha izinyathelo ezifanele zokuvikela isikhumba sakho, cishe uzothola ukushisa kwelanga okunzima (noma okubi kakhulu) futhi awukwazi ukujabulela isikhathi sakho ekushiseni kwelanga.
Ngakho-ke, ake sihlolisise izwe lokuphepha kwelanga, ukuze ukwazi ukulungiswa kahle.
I-Sun Protection Factor
I-SPF imelela ukuvikela kwelanga. Ikutshela ukuthi ungahlala isikhathi esingakanani ilanga ngaphandle kokushiswa ngenkathi ugqoke isikrini selanga ngokuya esikhathini esingakanani ozokwazi ukuhlala elangeni ngaphambi kokushiswa ngaphandle kokugqoka lelo qhwa lelanga. Ngamanye amazwi, kuthiwa kuthatha imizuzu engu-15 ukushisa ngaphandle kokugqoka isikrini selanga. Ukusebenzisa i-SPF 10 kusho ukuthi kuzokuthatha isikhathi eside ukushisa izikhathi ezingu-10 , noma amahora angu-2.5.
I-American Academy of Dermatology incoma ukugqoka i-SPF 30 ukuze uvikeleke kakhulu. Kodwa, kungenzeka ukuthi uzicabange wena, " Kodwa kukhona ama-sunscreen nge-SPF 70. Akuyona yini ukuvikelwa okuphezulu? " Akunjalo ngempela.
I-SPF ephakeme ayisho ukuvikelwa okungcono. I-SPF 50 ihlinzeka ngokuvikeleka okungaphezulu kuka-1 kuya kwangu-2 kune-SPF 30. Isikrini selanga esinama-SPF aphezulu sikwazi ukuvikela isikhumba sakho isikhathi esiningi, kodwa cabanga ngezimo ezijwayelekile lapho sigqoka khona isikrini ukubhukuda, ukujuluka, nokukhwabanisa.
Asikho isikrini selanga, kungakhathaliseki ukuthi i-SPF 15 noma i-60, ingaqeda lokho. Noma yikuphi ukukhanya kwelanga, kungakhathaliseki ukuthi yi-SPF, kufanele kusetshenziswe kaningi, ikakhulukazi ngemva kokubhukuda, ukujuluka, nokuma.
Index UV
Inkomba ye-UV (i-ultraviolet) iyisimo sokubikezela nsuku zonke ngobukhulu bemisebe ye- UV emini lapho imisebe yelanga ishaya kakhulu.
Inkomba ye-UV ilinganiswa ngesilinganiso esisodwa kuya kwezingu-11 +, enye ibonisa ingozi ephansi kunazo zonke ye-UV exposure kanye ne-11 + ebonisa ingozi ephezulu yokuvezwa kwe-UV.
Kunezici eziningana ezinquma inkomba ye-UV, kuhlanganise nenkathi, ububanzi, nokuphakama. Inkomba ye-UV iphezulu kakhulu entwasahlobo nasehlobo. Imisebe ye-UV iphakeme kakhulu e-equator, ngakho-ke uma usondelene nayo, imishanguzo enamandla kakhulu. I-Air iphinda ibe mncane kakhulu ekuphakameni okuphezulu, okubangela ukuthi imisebe ye-UV iqinise ngokuphakama.
UVA vs. UVB Protection
Imisakazo ye-UVA iyinhloko yemiphumela yokuguga kwelanga esikhumbeni kanti ama-UVB imisebe enomthwalo wokushisa ilanga nomdlavuza wesikhumba. Noma kunjalo, kubalulekile ukuqaphela ukuthi ukugxila ngokweqile emisebeni ye-UVA nakho kungabangela umdlavuza wesikhumba .
Ilebuli ebusweni belanga izobonisa ukuthi inikeza ukuvikelwa kwe-UVA noma UVB. Ukuze uvimbele umdlavuza wesikhumba nokuguga kwesikhumba sokuqala, isikrini selanga sidinga ukuvikela ngokumelene nemisindo emibili ye-UVA ne-UVB, nge-SPF encane engama-15. Ngaphandle kwalokho, isikrini selanga sivimbela kuphela ukushisa kwelanga hhayi umdlavuza wesikhumba.
Futhi phawula ukuthi i-SPF isilinganiso kuphela sokuvikelwa kwe-UVB, ngakho-ke khetha umkhiqizo othi "UVA / UVB" ukuvikelwa noma unesivikeli "esikhululekile".
Amanzi aphikisana noManzi
Izinga le-SPF lishintshwa uma isikhumba sakho sihlangana namanzi.
Lokhu kusho ukuthi kufanele usebenzise kabusha isikrini somshini lapho usuphelile emanzini noma uma uhlanganyela kulo msebenzi othukumezayo.
Uma ufuna isihenqo selanga ukuze usebenzise ngenkathi emanzini, khetha isihenqo selanga "esingenanzi amanzi" noma "ukumelana namanzi." Ama-sunscreen angenawo amanzi asuke angenawo amanzi ngokuphelele kodwa anikeze ukuvikelwa emanzini imizuzu engu-80. Ama-sunscreen anqabile amanzi anikezela ngokuvikeleka kwamaminithi angu-40 kuphela.
Izwi elivela
Njengoba izimangalo ze-SPF zilawulwa ngokweqile yi-FDA, i-SPF ilebula ayihambisani nenkampani kuya enkampanini, ngakho ukushintsha phakathi kwemikhiqizo akuyona inkinga.
Isikhwama sokukhanya kwelanga ngawe nguwe ongase ugqoke. Ngakho-ke, qiniseka ukuthola lowo othanda ukuzwa, iphunga, nokuthungwa kwesikhathi ngenkathi kufana nezinga le-SPF elidinga ithoni yakho yesikhumba.
Futhi, khumbula ukugcina lezi zeluleko zokuphepha kwelanga engqondweni:
- Sebenzisa isihenqo selanga ngokugcwele emzimbeni wakho wonke futhi usebenzise kabusha njalo.
- Izindwangu eziluhlaza, ezifudumele empeleni zivumela ukukhanya okukhulu kwemisebe ye-UV.
- I-sunscreen kufanele isetshenziswe kuwo wonke umzimba, ngisho nasezingxenyeni ezimbozwe izingubo.
- Ukugqoka izingubo ze-UPF kuhlakaniphile, kodwa akuyona inkambo ewusizo kakhulu.
- Gqoka isigqoko esikhulu.
- Vala isikhumba esivele.
- Hlala emthunzini ngangokunokwenzeka.
- Uma uthatha i-cruise, kubalulekile ukwazi ukuthi i- UV index iphakeme kakhulu eduze ne-equator futhi uma igozwe ngamanzi abonisa ukukhanya kwelanga. I-sunscreen engenamanzi ene-SPF 30 nokuvikelwa kwe-spectrum ebanzi kungcono ukubheja kwakho.
> Umthombo:
> Ukuphathwa Kwezokudla Nezidakamizwa zase-US. Isikhungo sokuphepha kokudla kanye neHhovisi le-Cosmetics ne-Colors Fact Sheet i-Applied Nutrition.