Njirimara nke Na-egbochi UVB Radiation
Sunscreens dị mkpa ngwaahịa anụ ahụ na-eji egbochi ntachu, nyocha , na ọrịa kansa. Ruo n'oge na-adịbeghị anya, a kwenyere na igbochi UVB radies na ntachu ahụhụ bụ nanị ihe ndị dị mkpa iji gbochie mmebi anyanwụ. Emepụtara ọnụ ọgụgụ SPF iji tụọ ikike nke sunscreen igbochi UV radiation. Ugbu a, anyị maara na UV UV radiation na-emetụtakwa aka na-emebi emebi anụ ahụ.
Ebe ọ bụ na SPF bụ nchekwa nke UVB, ihe ndị dị iche iche dị iche n'etiti ebe nchekwa anyanwụ nke na-ekpuchi radiation radiation UVB na nke na-enye ọdịdị dị elu - ma ọ bụ UVA na UVB - nchebe. A na-eji kemịl ndị a na-ejikarị eme ihe na mbara igwe iji banye UVB radiation nanị .
PABA
PABA , ma ọ bụ para-aminobenzoic acid , bịara na ahịa na United States na mmalite nke afọ 1970 na bụ ezigbo ezigbo sunscreen nke dị n'ọtụtụ ebe. Otú ọ dị, ọ bụ onye ahụ a maara nke ọma na esitela n'ọtụtụ ụzọ wepụ ya. A naghị ejikarị ya na mbara igwe.
- Uru: PABA na-ejidesi mkpụrụ ndụ dị na epidermis ike, na-edebe ya site na ịsacha ya na mmiri ma ọ bụ ọbụna na-ehichapụ ya na towel.
- Ihe ọghọm: Ọ na-akpata mmeghachi ahụ na-akpata nfụkasị na pasent 4 nke ndị bi na ya nakwa na ọ na-eyikwasị uwe.
PABA bụ
Nanị PABA ester nke FDA kwadoro maka United States bụ Padimate O , a makwaara dị ka octyl dimethyl PABA .
Ngwakọta a bụ nke yiri PABA, ma ọ bụghị dị ka iwe. Ozugbo e mepụtara ka anyanwụscreens na-enweghị PABA, ihe a na-ewu ewu nke Padimate O jụrụ ngwa ngwa. Ihe na-eme ka ọ bụrụ na ị na-eji ihe ndị ọzọ na-eme ka ọ bụrụ na ị na-eme ka SPF dị na ngwaahịa.
- Uru: Ọ bụ mmiri na-eguzogide ma ọ dịghị ekpokọta uwe.
- Ihe ọghọm: Ọ maara na ọ ga-eme ka mmeghachi omume na-akpata nfụkasị.
Cinnamates
Ndị cinnamons , Octyl methoxycinnamate na cinoxate , bụ ndị a na-ejikarị UVB abanye na United States. A na-ahụkarị ha na Ngosiputa Ngwa nke nwere ihe SPF.
- Uru: Ha bụ ndị na-agba ume UVB. Mgbe e jikọtara ya na ihe ndị ọzọ "siri ike", ha na-enyere aka mee ka mmiri ọgwụ ndị ahụ dịkwuo mma na mmiri.
- Ihe ọghọm: Ha nwere ike iwe iwe. Ndị nwere mmetụta uche na balsam nke Peru, atọ balsam, akwụkwọ coca, cinnamic aldehyde na mmanụ cinnaman pụkwara ịdị na-adọrọ mmasị na cinnamons.
Salicylates
Salicylates bụ salicylate salicylate , salicylate octyl , na salicylate triethanolamine . E jiriwo salicylates mee ogologo oge, ọbụna tupu PABA. Ngwurugwu Trolamine bụ mmiri na-edozi mmiri, n'ihi ya, a na-ejikarị ya eme ihe na ntutu isi na-echebe megide radiation radiation UV. Homosalate bụ chemical nke FDA jiri dị ka ọkọlọtọ maka atụle SPF.
- Uru: Ha na-eguzogide mmiri na-eguzogide eguzogide ma na-adịgide adịgide n'ihu ọnụ anyanwụ.
- Ihe ọghọm: Ha na-echebe megide obere akụkụ nke ụda UVB, n'ihi ya, a ghaghị iji ha mee ihe dị elu.
October
A na-ejikarị ihe na-eme October October iji mee ka azzenzone, UVA absorber, nke kachasị ya na ngwaahịa ndị na-abụghị ndị na-ejikọta.
Ọ bụ otu n'ime ole na ole na-ekpo ọkụ nke nwere ike iji gel sunscreens.
- Uru: Ọ na-adịkarịghị ewute anụ ahụ.
- Ihe ọghọm: A ghaghị ijikọ ya na ihe ntanetị ndị ọzọ nke UV iji mee ka ọ dịkwuo ala ma ọ dịkwa oke ọnụ iji mepụta.
Gosulizole
Ensulizole ma ọ bụ PBSA bụ mmiri soluble, n'ihi ya, ọ na-eji ọtụtụ moisturizers. Ọ na-eme ezigbo ọrụ nke igbochi UVB ụzarị, ma ọ dịghị egbochi ọ bụla UVA ụzarị. The filters UVB depụtara n'elu gbochie obere ego nke UVA radieshon.
- Uru: Ọ na-esighi ike ịkpasu iwe.
- Ihe ọghọm : Ọ na-agbachi otu ọkpụrụkpụ warara nke UV radieshon.
Isi mmalite:
Lautenschlager, S, HC Wulf, na MR Pittelkow. "Photoprotection," Lancet. 370 (2007): 528-37.
Nguyen, Nathalie, na Darrell Rigel. "Nkọwapụta na Mgbochi nke Photocarcinogenesis." Nlekọta nke ịchọ mma nke Skin Skin. Ed. Zoe Draelos & Lauren Thamon. New York: Taylor & Francis, 2006. 156-9.
Nkwụ, MD, na MN O'Donoghue. "Nwelite na photoprotection." Dermatol Ther. 20 (2007): 360-76.