Lub caij ntuj sov ntev ntev yuav tsum hloov tsis tau tsuas yog hnav khaub ncaws, tab sis kuj txhais tau tias ntawm kev tu tawv nqaij. Tam sim no nyob rau hauv lub hnab kom hniav nyiaj ntawm txhua tus poj niam, uas zov txog preservation ntawm cov hluas, yuav tsum muaj kev tiv thaiv ntawm lub hnub rau lub ntsej muag. Txhais tau tias txo cov nyhuv ntawm ultraviolet, tiv thaiv kev yees duab ntawm daim tawv nqaij. Tsis tas li ntawd, lawv tiv thaiv kom txhob liab thiab kub hnyiab .
Lub hnub tiv thaiv zoo tshaj plaws rau lub ntsej muag
Tag nrho cov cream , emulsions, lotions los yog lwm cov ntaub ntawv ntawm cov khoom ntawm cov piav qhia yog cais raws li cov tshuaj pleev thaiv hnub. Nws tus nqi zauv yog tus cwj pwm ntawm theem qis ntawm ultraviolet rays.
SPF (SPF) hauv tshuaj pleev thaiv hnub rau lub ntsej muag:
- Los ntawm 2 mus rau 4. Cov tshuaj ua kom zoo li 25-50% ntawm ultraviolet, muab kev tiv thaiv yooj yim.
- Los ntawm 5 mus rau 10. Txhais tau tias muaj kev tiv thaiv nruab nrab, khaws cia li 85% ntawm UV.
- Los ntawm 10 mus rau 20 xyoo. Tus nqi siab. Xws li cov khoom cuam tshuam nrog cov nyhuv ntawm 95% ultraviolet.
- Txij ntawm 20 mus rau 30. Kev tiv thaiv ntau tshaj ntawm 97% UV.
Muaj kuj yog hu ua "tshav thaiv pob" (SPF 50), uas yog yuav luag tag nrho ntawm ultraviolet rays, mus txog 99.5%.
Xaiv lub cuab yeej zoo yog qhov yooj yim - qhov sib zog ntawm daim tawv nqaij, qhov ntau dua ntawm tus lej ntawm SPF.
Nws yog ib qho tseem ceeb kom nco ntsoov tias cov tshuaj yuav tsum tau siv txhua 2 xuab moos, tshwj xeeb tshaj yog yog hais tias so nrog chav da dej.
Ntsej muag cream nrog hnub tiv thaiv txog rau SPF 50
Yuav cov tshuaj pleev ib ce, koj yuav tsum xyuam xim rau nws qhov zoo thiab muaj pes tsawg leeg. Cov khoom hauv qab no tau muab pov thawj ua kom zoo:
- Eco paj pleev ib ce Crème Solaire SPF 10;
- Natura Siberica Hnub Cream Rau Lub ntsej muag SPF 15;
- Matis Teb Qhia Soleil SPF 20;
- Clinique Superdefence SPF 25;
- Anna Lotan Liquid Gold SPF 30;
- Christina Château tsib Beautè Shielding Lee SPF 35;
- Vichy peev Soleil SPF 50;
- L'Oreal Tshiab Sublime Tshaj Tshaj Sab Hnub Ci SPF 50+.