Txoj kev tawg ultraviolet (UV) yog ib feem ntawm lub teeb electromagnetic (lub teeb) spectrum uas ncav cuag lub ntiaj teb los ntawm lub hnub. Nws muaj cov wavelengths luv dua li lub teeb pom kev, ua rau nws tsis pom los ntawm lub qhov muag liab qab. Ultraviolet A (UVA) yog lub teeb UV ntev dua uas ua rau daim tawv nqaij puas tsuaj mus ntev, tawv nqaij laus, thiab tuaj yeem ua rau mob qog nqaij hlav. Ultraviolet B (UVB) yog lub teeb UV luv dua uas ua rau kub hnyiab, ua rau daim tawv nqaij puas tsuaj, thiab tuaj yeem ua rau mob qog nqaij hlav.
Cov tshuaj pleev thaiv hnub yog cov khoom sib xyaw ua ke ntau yam khoom xyaw uas pab tiv thaiv lub hnub lub teeb ultraviolet (UV) kom tsis txhob ncav cuag daim tawv nqaij. Ob hom teeb ultraviolet, UVA thiab UVB, ua rau daim tawv nqaij puas tsuaj thiab ua rau koj muaj feem yuav mob qog nqaij hlav. Cov tshuaj pleev thaiv hnub sib txawv hauv lawv lub peev xwm los tiv thaiv UVA thiab UVB.
Tshuaj pleev thaiv hnub tuaj yeem pab tiv thaiv kab mob qog nqaij hlav los ntawm kev tiv thaiv cov teeb meem ultraviolet ntawm lub hnub. Lub Koom Haum American Academy of Dermatology pom zoo kom txhua tus siv tshuaj pleev thaiv hnub uas muaj cov hauv qab no: Kev tiv thaiv Broadspectrum (tiv thaiv cov teeb meem UVA thiab UVB) Sun Protection Factor (SPF) 30 lossis siab dua.
Diethylhexyl Butamido Triazoneyog ib qho tshuaj uas yooj yim nqus tau UVA thiab UVB hluav taws xob thiab feem ntau pom muaj nyob rau hauv tshuaj pleev thaiv hnub thiab lwm yam khoom siv tiv thaiv hnub.
Vim nws cov solubility zoo heev hauv ntau hom roj pleev kom zoo nkauj, tsuas yog xav tau cov qib qis xwb kom muaj cov khoom xyaw nquag txaus kom ncav cuag SPF siab.
Siv rau hauv cov concentration txog li 10%. Nws lim cov teeb UVB, thiab qee cov teeb UVA.
Ib qho khoom nqus UV dav dav muab qhov zoo heev rau kev tiv thaiv hnub Muaj kev sib koom tes zoo nrog lwm cov lim dej UV‐Creams Lotions Seums Deodorants Beauty Soaps Hmo ntuj serum Sunscreens Cov khoom pleev xim / Xim tshuaj pleev ib ce Yaj hauv theem roj ntawm emulsion Broad spectrum UV absorber Hydrophobic xwm thiab nws cov solubility hauv roj ua rau yooj yim rau cov qauv tiv taus dej‐
Diethylhexyl Butamido Triazoneyog ib qho tshuaj organic uas ua los ntawm triazine uas yooj yim nqus tau UVA thiab UVB. Iscotrizinol feem ntau pom muaj nyob rau hauv tshuaj pleev thaiv hnub thiab lwm yam khoom siv pleev thaiv hnub.
Lub sijhawm tshaj tawm: Cuaj hlis-14-2022