Iyini imiphumela ye-sunscreen nokuthi ungayisebenzisa kanjani ngendlela efanele? Ungayikhetha kanjani i-sunscreen ekufanele?

Ukuhlukaniswa kwe-sunscreen

I-sunscreen ibhekisela ezimonyweni ezifakwe ama-agent e-sunscreen angavimba noma amunce imisebe ye-ultraviolet ukuvimbela isikhumba ekushiseni nasekushiseni kwelanga. Ngokwesimiso sokuvikela ilanga, i-sunscreen ingahlukaniswa ibe yi-sunscreen ebonakalayo kanye ne-sunscreen yamakhemikhali.

I-sunscreen ebonakalayo

I-sunscreen ebonakalayo, njengoba igama lisho, isebenzisa izimiso zefiziksi. Izinhlayiya ze-athomu zalesi sivikelo selanga zimise okwezinhlayiya. Uma zisakazeka ebusweni, zisebenza njengesibuko, zibonisa ukukhanya kwelanga ukuze kufezwe injongo yokuvikela ilanga. I-Titanium dioxide kanye ne-zinc oxide zombili ziyizithako ze-sunscreen ebonakalayo. Zingakha ifilimu evikelayo esikhumbeni ukuze imisebe ye-ultraviolet ingangeni ebusweni besikhumba. Zombili zinganikeza ukuvikelwa okuphelele kwe-UVB, phakathi kwazo i-zinc oxide engavimba i-UVA kangcono. Izithako ze-sunscreen ezivamile zomzimba zimhlophe futhi zi-pasty, futhi ziphenduka zibe luhlaza okwesibhakabhaka uma zivezwa emanzini. Kodwa-ke, lolu hlobo lomkhiqizo lunemikhawulo ethile: kubantu abanesikhumba esimnyama, umphumela wokupholisha ungase ungabi wemvelo; kubantu abanesikhumba esomile, asimanzi ngokwanele; asifaneleki isivikelo selanga esigcwele umzimba; imikhiqizo yokususa izimonyo kumele isetshenziswe ukusiza ukuyisusa ihlanzekile, njll.

i-sunscreen yamakhemikhali

I-sunscreen yamakhemikhali iwukusebenzisa izithako zamakhemikhali ukuvikela elangeni. Lolu hlobo lwe-sunscreen lusebenzisa isimiso sokumunca ukuze luvikele elangeni. Luyinto edlulisela ukukhanya engamunca imisebe ye-ultraviolet bese iyiguqula ibe amandla okudlidliza kwama-molecule noma amandla okushisa ukuze kufezwe umphumela wokuvikelwa kwelanga, njenge-amino acid. I-Benzoic acid kanye nezinto ezitholakala kuyo, i-cinnamic acid, njll. Uma isetshenziswa ebusweni, ama-athomu amunca ukukhanya kwelanga ukuze akuvimbele ekufinyeleleni esikhumbeni. Ngokwenkolelo-mbono, i-sunscreen yomzimba ingcono kune-sunscreen yamakhemikhali, kodwa okwamanje iningi lawo emakethe liyi-sunscreen yamakhemikhali.

Ukuhlukaniswa kwe-sunscreen

I-sunscreen ibhekisela ezimonyweni ezifakwe ama-agent e-sunscreen angavimba noma amunce imisebe ye-ultraviolet ukuvimbela isikhumba ekushiseni nasekushiseni kwelanga. Ngokwesimiso sokuvikela ilanga, i-sunscreen ingahlukaniswa ibe yi-sunscreen ebonakalayo kanye ne-sunscreen yamakhemikhali.

I-sunscreen ebonakalayo

I-sunscreen ebonakalayo, njengoba igama lisho, isebenzisa izimiso zefiziksi. Izinhlayiya ze-athomu zalesi sivikelo selanga zimise okwezinhlayiya. Uma zisakazeka ebusweni, zisebenza njengesibuko, zibonisa ukukhanya kwelanga ukuze kufezwe injongo yokuvikela ilanga. I-Titanium dioxide kanye ne-zinc oxide zombili ziyizithako ze-sunscreen ebonakalayo. Zingakha ifilimu evikelayo esikhumbeni ukuze imisebe ye-ultraviolet ingangeni ebusweni besikhumba. Zombili zinganikeza ukuvikelwa okuphelele kwe-UVB, phakathi kwazo i-zinc oxide engavimba i-UVA kangcono. Izithako ze-sunscreen ezivamile zomzimba zimhlophe futhi zi-pasty, futhi ziphenduka zibe luhlaza okwesibhakabhaka uma zivezwa emanzini. Kodwa-ke, lolu hlobo lomkhiqizo lunemikhawulo ethile: kubantu abanesikhumba esimnyama, umphumela wokupholisha ungase ungabi wemvelo; kubantu abanesikhumba esomile, asimanzi ngokwanele; asifaneleki isivikelo selanga esigcwele umzimba; imikhiqizo yokususa izimonyo kumele isetshenziswe ukusiza ukuyisusa ihlanzekile, njll.

i-sunscreen yamakhemikhali

I-sunscreen yamakhemikhali iwukusebenzisa izithako zamakhemikhali ukuvikela elangeni. Lolu hlobo lwe-sunscreen lusebenzisa isimiso sokumunca ukuze luvikele elangeni. Luyinto edlulisela ukukhanya engamunca imisebe ye-ultraviolet bese iyiguqula ibe amandla okudlidliza kwama-molecule noma amandla okushisa ukuze kufezwe umphumela wokuvikelwa kwelanga, njenge-amino acid. I-Benzoic acid kanye nezinto ezitholakala kuyo, i-cinnamic acid, njll. Uma isetshenziswa ebusweni, ama-athomu amunca ukukhanya kwelanga ukuze akuvimbele ekufinyeleleni esikhumbeni. Ngokwenkolelo-mbono, i-sunscreen yomzimba ingcono kune-sunscreen yamakhemikhali, kodwa okwamanje iningi lawo emakethe liyi-sunscreen yamakhemikhali.

Izinyathelo Zokuqapha Zokusebenzisa I-Sunscreen

1. Indawo yokufaka isicelo

Uma ufaka i-sunscreen, ungayinaki intamo yakho, isilevu, izindlebe kanye nezinye izindawo ukuze ugweme ithoni yesikhumba engalingani.

2. Imikhiqizo yokuhlanza

Qiniseka ukuthi ususa ngokuphelele isithako sokuvikela ilanga njalo ebusuku, ngakho ungaphumuli futhi ulale usigqokile.

3. Sebenzisa inani elanele

I-sunscreen ayisebenzi ngokuyisebenzisa nje kuphela, kodwa kumele ifinyelele inani elithile ukuze isebenze. Ngokuvamile, inani le-sunscreen elisetshenziswa esikhumbeni lingu-2 mg ngesentimitha lesikwele ukuze kufezwe umphumela ofiselekayo wokuvikela ilanga. Kufanele kuqashelwe ukuthi amanani e-SPF awakwazi ukuqongelelwa. Ukusebenzisa izendlalelo ezimbili ze-sunscreen ye-SPF10 kuzoba nomphumela wokuvikela wesendlalelo esisodwa se-SPF10 kuphela.

4. Ungaxubi ama-sunscreen avela kumikhiqizo ehlukene

Ukusetshenziswa okuxubile kungandisa amathuba okucasuka kwesikhumba. Izithako zemithi yokuvikela ilanga yezinhlobo ezahlukene azihambisani. Uma zixutshwe futhi zihambisana esikhumbeni, izithako zingaphazamisana noma zihlukanise, zinciphise umphumela wokuvikela ilanga, futhi zibangele ngisho nokungezwani nesikhumba.

5. Naka ukonga imali

I-sunscreen ingase ingasebenzi kahle uma ivezwa ekushiseni noma elangeni eliqondile isikhathi eside. Ungasebenzisi izimonyo ze-sunscreen ezonakele ngoba ayigcini nje ngokunciphisa umphumela we-sunscreen kodwa futhi ingase icasule isikhumba.

6. Naka izindawo ezingaboni ezivikela ilanga

Uma usebenzisa isithako sokuvikela ilanga esivamile, udinga futhi ukunaka isikhumba samehlo akho nezindebe. Kodwa-ke, uma kungekho myalelo, noma uma usebenzisa imikhiqizo yesithako sokuvikela ilanga emehlweni, ungayisebenzisi esikhumbeni esizungezile amehlo.

Izinhlobo ezahlukene zesikhumba, izindlela ezahlukene zokuthenga

Ehlobo, ukuthungwa kwesikhumba kuzoshintsha ngenxa yokwehluka kokukhishwa kwamafutha. Ngakho-ke, abantu kufanele benze olunye uvivinyo lwesikhumba olunembile ngaphambi kokuthenga. Isikhumba esinamafutha kufanele sikhethe imikhiqizo yelanga esuselwe emanzini enendawo engenela kakhulu; isikhumba esomile kufanele sikhethe imikhiqizo yelanga ewukhilimu; ngokuvamile azikho imithetho eqinile yesikhumba esingathathi hlangothi, futhi i-sunscreen yohlobo lwe-emulsion ifanele zonke izinhlobo zesikhumba. Izinhlobo zesikhumba ezahlukene kufanele zikhethe ama-sunscreen ahlukene

Isikhumba esinamafutha:

Kufanele ukhethe i-sunscreen eyenziwe ngamanzi, engenawo amafutha enamandla amakhulu okungena, eqabulayo futhi engagcobi amafutha ukuyisebenzisa futhi engavimbi izikhala. Ungalokothi usebenzise i-sunscreen oil, futhi sebenzisa imikhiqizo ye-sunscreen ebonakalayo ngokucophelela.

Isikhumba esifana nesikhumba esinomkhuhlane:

Khetha i-sunscreen esuselwe emanzini, engenawo amafutha enamandla amakhulu okungena. Uma i-acne isinzima, kufanele uyeke ukusebenzisa i-sunscreen, futhi ungasebenzisa izindlela zomzimba kuphela zokufihla lapho uphuma.

Isikhumba esomile:

Abantu abanesikhumba esomile kumele bakhethe i-sunscreen efaka umswakama ekubunjweni kwayo futhi enemiphumela eyengeziwe yokufumisa futhi ithuthukise ukuzivikela kwesikhumba. I-sunscreen eminingi inemiphumela eyengeziwe yokufumisa kanye ne-antioxidant ngaphezu kokuvikela ilanga.

Isikhumba esibucayi:

Kwesikhumba esibucayi, kunconywa ukuthi ukhethe isithako sokuvikela ilanga esenzelwe isikhumba esibucayi noma isithako sokuvikela ilanga esibonakalayo.

I-SPF

Namuhla, yonke imikhiqizo ye-sunscreen ibhalwe ngokuqondile nge-SPF. I-SPF kanye nezinombolo ezilandelayo zibonisa isici sokuvikela ilanga esinawo umkhiqizo. Abathengi bangaguqula inani le-SPF le-sunscreen okudingeka bazithengele bona. Iningi labantu lizobheka inani le-SPF njengepharamitha eyinhloko ye-sunscreen. I-SPF yisifinyezo sesiNgisi se-SUN proteetion Factor. Lokhu kubonisa ukuthi i-sunscreen ingaba phezulu noma iphansi kangakanani ekuvimbeleni i-sunscreen. Ipharamitha ye-SPF: I-SPF=umthamo omncane we-erythema (ngemuva kokusebenzisa imikhiqizo ye-sunscreen) )/umthamo omncane we-erythema (ngaphambi kokusebenzisa i-sunscreen).

Isibonelo, uma isikhumba sakho sinomthamo omncane we-erythema wemizuzu eyi-15, uma usebenzisa umuthi wokuvikela ilanga one-SPF 4, ngokombono ungahlala elangeni isikhathi eside ngokuphindwe kane, okungukuthi imizuzu engama-60. Ngemva kwemizuzu engama-60, isikhumba sakho sizoba bomvu. Uma usebenzisa umuthi wokuvikela ilanga we-SPF8, ungahlala elangeni izikhathi eziyi-8 okungukuthi imizuzu eyi-120, njalo njalo.

Ngokuvamile, uma inkomba ye-SPF iphakeme, kulapho isivikelo esisinikezayo siba sikhulu khona. Ngaphansi kwezimo ezivamile, abantu abanezinhlobo zesikhumba ezijwayelekile kufanele basebenzise ama-sunscreen ane-SPF 8 kuya ku-12; labo abanesikhumba esikhanyayo kufanele basebenzise i-SPF 30; abantu abanokuzwela ukukhanya kwelanga kufanele bakhethe ama-sunscreen anenani le-SPF eliphakathi kuka-12 no-20. Izisebenzi zasehhovisi zithintana nelanga kuphela lapho ziya emsebenzini futhi zibuya emsebenzini, ngakho-ke i-SPF kufanele ibe ngaphansi kuka-15. Kwabavakashi abahlanganyela emisebenzini yangaphandle, kunconywa ukusebenzisa ama-sunscreen ane-SPF20 noma ngaphezulu. Uma uzivocavoca ngaphansi kwelanga elishisayo ethafeni noma ubhukuda ogwini lolwandle, kufanele usebenzise i-sunscreen ene-SPF30. Kunconywa ukukhetha imikhiqizo yokunakekela isikhumba ene-sunscreen engangeni manzi lapho ubhukuda ngaphandle, kodwa ngaphandle kokubhukuda, imikhiqizo yokunakekela isikhumba ene-sunscreen engangeni manzi kufanele isetshenziswe kancane.

Izinyathelo Zokuqapha Lapho Uthenga

1. Ukuhlolwa kwesikhumba

Kunconywa ukuthi wenze isivivinyo sesikhumba esinembile ngaphambi kokuthenga isivikelo selanga. Isikhumba esinamafutha kufanele sikhethe isivikelo selanga esisekelwe emanzini esingena ngamandla; isikhumba esomile kufanele sikhethe isivikelo selanga esikhilimu; isikhumba esiphakathi ngokuvamile asinazo izidingo eziqinile, futhi isivikelo selanga esifana ne-emulsion silungele zonke izinhlobo zesikhumba.

2. Bala inani le-SPF

Ngokuvamile, uma inkomba ye-SPF iphakeme, isikhathi sokuvikela esinikezwayo siba side.

3. Qonda amaqembu afanelekela izinhlobo ezahlukene zemithi yokuvikela ilanga

Imikhiqizo ehlukene yokuvikela ilanga ifanele abantu abahlukene. Indlela engcono kakhulu ukuyizama ngaphakathi kwesandla sakho ngaphambi kokuyithenga. Uma isikhumba siba bomvu, sivuvukele, sibe buhlungu, noma silume zingakapheli imizuzu eyi-10, kusho ukuthi une-allergy kumkhiqizo. Ungazama umkhiqizo one-SPF ephansi ngokuphindwe kanye kunalokhu. Uma kusekhona ukusabela, kungcono ukuyeka lolo hlobo lokuvikela ilanga.

4. Ukuhlolwa kwekhwalithi yesikhumba

Ngenxa yokwehluka kokukhishwa kwamafutha, ikhwalithi yesikhumba izoshintsha, ngakho-ke kufanele kwenziwe ukuhlolwa kwekhwalithi yesikhumba. Isikhumba esinamafutha kufanele sikhethe izihlanzi ze-foam ezinamandla okuhlanza aqinile kanye nemikhiqizo yelanga esekwe emanzini enendawo engenela kakhulu; isikhumba esomile kufanele sikhethe izihlanzi zobisi kanye nemikhiqizo yelanga ekhilimu; isikhumba esingathathi hlangothi sinezinketho eziningi. Izihlanzi zelanga ezifakwe i-lotion kanye ne-spray zifanelekela zonke izinhlobo zesikhumba.