Cov kws tshawb fawb qhia tias lub ntiaj teb txheej ntawm peb lub ntiaj teb tuaj yeem txhua tus me dua txhua xyoo, qhov no ua rau kom muaj kev txaus ntshai tias lub hnub txoj kev sib tw nrog nws. Cov kws kho mob tau ntev tau pom zoo siv tshuaj pleev thaiv hnub tsis tsuas yog ntawm lub puam, tab sis txhua hnub. Cov qab zib no yuav tsum tau kho txhua qhov ntawm lub cev uas tas li qhib, uas yog, ob txhais caj npab, caj dab, caj dab, lub xub pwg thiab ntsej muag. Txawm li cas los xij, yuav kom qhov txiaj ntsig ntawm cov nplaum yuav siv tau, koj yuav tsum tau xaiv nws, coj los ntawm qee cov cai, thiab cov ciaj ciam ntawm koj lub cev, tshwj xeeb tshaj yog hom tawv nqaij.
Qeb hnub tiv thaiv
Txhua cov tshuaj pleev thaiv hnub muaj ib qhov parameter hu ua lub hnub tiv thaiv kev ntsuas. Nws yog denoted ntawm cov zauv. Cov nplaum no muaj tsawg kawg yog ob qhov kev lag luam. Ib qho ntawm lawv, SPF qhia txog kev tiv thaiv los ntawm huab cua los ntawm ultraviolet b-rays, lwm yam, UVA - qib kev tiv thaiv tawm tsam ultraviolet a-rays.
Qhov feem ntau qhia txog lawv yog SPF parameter. Yog tias koj pom kab lus no rau ntawm lub khob khov, ces koj tuaj yeem nco ntsoov tias cov tshuaj nplaum no yog tshuaj pleev thaiv hnub. Tus nab npawb, uas yog sib npaug zos rau SPF, txhais tau tias pes tsawg lub sij hawm tso cai ntawm lub hnub raug tshua nrog rau daim ntawv thov ntawm cov tshuaj no.
Piv txwv, yog tias ntawm koj daim tawv nqaij thawj zaug tuaj tshwm sim ib xuab moos tom qab lub hnub dhau mus, tom qab ntawd qhov tseeb, nrog kev siv tshuaj tiv thaiv SPF sib npaug los ntawm kaum, koj tuaj yeem nyob hauv lub hnub tsis muaj kev puas tsuaj rau ntawm daim tawv nqaij li kaum teev (tab sis cov kws kho mob xws li lub sij hawm ntawm nyob rau hauv lub hnub tsis pom zoo categorically). Cov nyhuv no yog tiav nrog kev pab ntawm tshwj xeeb additives uas yog ib feem ntawm cov tshuaj nplaum, xws li hmoov zoo heev ntawm titanium dioxide, uas ua haujlwm raws ntau micromirrors uas pab cuam tshuam cov ultraviolet rays.
Qhov no SPF parameter yuav txawv ntawm ob rau tsib caug. 2 - yog qhov tiv thaiv tsis muaj zog, uas tiv thaiv ib nrab ntawm cov teeb meem loj tshaj ultraviolet - UV-B. Feem ntau yog SPF 10-15, uas zoo heev rau kev tiv thaiv tej tawv nqaij. Qhov siab tshaj plaws ntawm kev tiv thaiv nyob rau hauv SPF 50 - lawv lim mus txog 98% ntawm teeb meem tawg.
Feem ntau cov neeg pleev kob siv cov ntawv Thomas Fitzpatrick los txiav txim seb tus neeg mob cov tawv nqaij zoo li cas (phototype), nyob ntawm seb puas muaj cov neeg ua haujlwm melanocyte.
Nyob rau hauv no teev, muaj rau 6 hom ntawm daim tawv nqaij. Ob lub xeem no peb yuav tsis muab, vim hais tias cov neeg uas muaj tawv nqaij feem ntau nyob hauv teb chaws Africa thiab lwm lub teb chaws sov. Ntawm cov Europeans muaj plaub phototypes. Nws cov hom tsis yog yooj yim los txiav txim, ntawm no yog cov khoom ntawm txhua tus ntawm lawv.
Kuv phototype
Cov tawv nqaij dawb dawb pinkish tinge. Feem ntau muaj quav hnav. Feem ntau nws yog xim xiav-eyed blondes (blondes) lossis liab cov neeg uas muaj qhov tawv nqaij. Lawv cov tawv nqaij nyuab nyuab heev, nws kub hnyav heev. Feem ntau qhov no yog 10 feeb. Rau lawv, tsuas yog qab zib nrog kev tiv thaiv zoo, nrog SPF tsis pub tsawg tshaj 30, yuav nplua lawv - cov nyiaj uas tsis tshua muaj txiaj ntsig los pab.
II phototype
Qhov thib ob phototype ntawm daim tawv nqaij yog lub teeb, quav hnav yog tsis tshua muaj tsawg, cov plaub hau yog lub teeb, qhov muag ntsuab, xim av, grey. Rau lawv, lub hnub kawg rau kev nruam nphav raug lub hnub yog tsis pub ntau tshaj ib lub hlis ntawm ib xuab moos, tom qab uas qhov yuav tau txais sunburns sharply nce. Lawv yuav tsum siv cream nrog SPF sib npaug li 20 los yog 30 thawj lub lim tiam ntawm lub hnub kub, tom qab uas cov nplaum yuav tsum tau hloov mus rau lwm qhov, uas muaj ib qho tsawg parameter 2-3 zaug.
III phototype
Daim tawv nqaij tsaus, qhov muag xim av, cov plaub hau feem ntau yog xim av los yog xim txiv ntseej. Muaj caij nyoog zoo nyob rau hauv lub hnub yog kwv yees li ib nrab. Lawv nyiam siv lub hnub ci nrog SPF los ntawm 15 txog 6.
IV phototype
Brunettes nrog tsaus daim tawv nqaij thiab tsaus muag. Lawv tuaj yeem ua lub hnub kom txog 40 feeb tsis muaj qhov kub nyhiab. Rau lawv, ib lub qab zib nrog SPF ntawm 10 mus rau 6 yog qhov zoo tshaj plaws.
Kuj tseem ceeb rau kev xaiv cov tshuaj tiv thaiv kom zoo ntawm lub hnub yog qhov chaw uas koj yuav mus nyob hauv lub hnub ntev. Yog tias koj npaj siab so nyob rau hauv toj siab los yog koom nrog cov kev ua si dej, nws yog qhov zoo uas yuav siv sij hawm qab zib nrog kev tiv thaiv siab - SPF30. Nws kuj ua haujlwm zoo rau menyuam cov tawv nqaij.