Cov tshuaj pleev ib ce tas li hais tias daim tawv nqaij yuav tsum tiv thaiv tiv thaiv cov teeb meem hluav taws xob zoo nkauj. Ntxiv mus, nws yog ib qho tsim nyog los tiv thaiv nws nrog tus tsim nyog txhais tau tias muaj ntau cov ntxaij lim dej thiab npog cov hluav taws xob ntau. Tsis txhob tsis saib tsis suav nrog cov neeg sawv cev txawm tias nyob rau lub caij nplooj ntoo hlav - tam sim no lub hnub yog nquag txaus kom koj tuaj yeem tau txais lub hlawv. Peb qhia txog dab tsi cosmetics tshwj xeeb cov lim dej tshwj xeeb yuav tsum tau ntxiv.
Cov duab hluav taws xob yog dab tsi?
Ua ntej tham txog tshuaj pleev ib ce, koj yuav tsum nkag siab txog lub teeb hluav taws xob kom muaj kev tiv thaiv. TAG NRHO TOM QAB PEB COV RAYS:
- UVA yog rays nrog ntev ntev, uas ua rau 95% ntawm cov hnub ci hluav taws xob. Qhov phom sij loj rau cov tawv nqaij ua kom laus laus. Lawv rau cov txheej txheem sib sib zog nqus ntawm daim tawv nqaij thiab rhuav tshem cov hlwb los ntawm sab hauv, ua rau ziab. Lawv yog tshwj xeeb tshaj yog qhov txaus ntshai rau cov tawv nqaij qhuav, uas yog li tsis muaj noo noo. Tus so ntawm daim tawv nqaij hom nrog cov muaj peev xwm tawm ntawm cov hluav taws xob no tsis txaus ntshai.
- UVB yog rays nrog lub wavelength nruab nrab, uas ua rau yuav luag 5% ntawm hluav taws xob. Lawv yog vim li cas rau cov tsos ntawm kub hnyiab, pigmentation thiab voos ntawm daim tawv. Lawv cov kev ua siab nyob poob thaum lub sijhawm noj su - tsis muaj tus kws kho mob tawm tswv yim kom tsis txhob sunbathe ntawm 10 txog 16 teev. Qhov hluav taws xob hluav taws xob no txaus ntshai heev rau menyuam yaus, cov neeg muaj tawv nqaij lig, cov neeg nquag ua paj nruas, thiab cov khoom siv acidic peels thiab sib tsoo.
- UVC yog rays nrog lub nthwv dej luv ua rau ntau pua ntawm feem pua. Lawv xyaum tsis txeem los ntawm cov huab cua, yog li ntawd tsis txaus ntshai rau tus neeg.
Yuav tsum tiv thaiv daim tawv nqaij los ntawm ob qho tib si
Yees duab: Pixabay.com.
Cov khoom xyaw tiv thaiv los ntawm ultraviolet
Conderly UV lim tau muab faib ua kev sib cais thiab tshuaj lom neeg. Lub cev muaj:
- Zinc Oxide (Zinc Oxide) - Tiv thaiv ob hom hluav taws xob Tab sis xaiv daim tawv nqaij thiab tuaj yeem ua rau muaj kev xav ntawm dryness. Qhov zoo tshaj plaws rau cov menyuam yaus thiab cov neeg laus qab nthab.
- Titanium Dioxide (Titanium Dioxide) - Tiv thaiv los ntawm UVB Rays, tab sis UVA cov khoom luam tsis zoo. Kuj tseem tos thiab muaj peev xwm qhab nia. Haum rau cov neeg uas tsis tshua muaj kub hnyiab hauv lub hnub.
Tshuaj lim dej:
- Avobenzone - nqus Uva, tab sis tsis tiv thaiv vb hluav taws xob. Nws haum cov neeg uas sunbathe zoo thiab sai tau tau txais kev ntxoov ntxoo tsaus nti.
- Tinosorb - tiv thaiv kev tawm tsam ob hom hluav taws xob Cov. Haum rau txhua tus neeg, suav nrog cov menyuam yaus thiab cov neeg laus qab nthab.
- Octocrylene - nqus UVB, tab sis tsis tiv thaiv los ntawm UVA.
- Oxybenzon, lossis Benzophenone (OxyBenzone) - tiv thaiv tsuas yog los ntawm UVA hluav taws xob.
- Octinoxate (Octinoxate) - Tiv thaiv tsuas yog los ntawm UVB hluav taws xob.
- Ethylhexyl triazone yog nquag los ntawm UVB.
Them sai sai rau cov neeg ua haujlwm
Yees duab: Pixabay.com.
Yuav ua li cas them sai sai rau kev xaiv ntawm txhais tau tias
- Daim ntawv lo. Nws yuav tsum qhia lub sijhawm tiv thaiv: 2-4 - kev tiv thaiv los ntawm 50-75% Rays, 4-10, 20-30 - tiv thaiv los ntawm 97%, 30-50 - kev tiv thaiv los ntawm 99% ntawm cov hluav taws xob. Kev Tiv Thaiv Kev Tiv Thaiv los ntawm UVA hluav taws xob tau qhia los ntawm lub cim tshwj xeeb hauv lub voj voog ntawm sab pem hauv ntej ntawm lub ntim. Nco ntsoov tias tus thinner ntawm txheej, kev tiv thaiv tsawg - txog 2 hli ntawm cov qab zib yuav zoo tagnrho rau kev thaiv lub teeb.
- Phototype. Lub teeb ci dua koj cov tawv nqaij, plaub hau thiab ob lub qhov muag, koj yuav raug ntau dua rau hluav taws xob. Cov neeg dej nyab-cov tawv nqaij yuav tsum siv lub hnub tiv thaiv, thiab rov ua haujlwm tsawg kawg ib zaug txhua 2 teev - kov cov tawv nqaij, yog li txheej tau muab tshem tawm.
- Nqe. Ib qho cuab yeej zoo yuav raug nqi pheej yig. Nco ntsoov them nyiaj rau cov muaj pes tsawg leeg ua ntej yuav cov tshuaj nplaum lossis tshuaj tsuag. Cov lus cog tseg ntawm cov khw hais txog cov dej tsis muaj dej thiab thev yuav tsis muaj teeb meem thaum koj pw hauv qhov ntxoov ntxoo es tsis txhob hlawv.