Libaka tse haufi le equator kapa libakeng tse phahameng li na le mahlaseli a matla a ultraviolet. Ho pepesehela mahlaseli a ultraviolet nako e telele ho ka lebisa mathateng a kang ho chesoa ke letsatsi le ho tsofala ha letlalo, kahoo tšireletso ea letsatsi e bohlokoa haholo. Setlolo sa letsatsi sa hona joale se finyelloa haholo-holo ka mokhoa oa ho koahela 'mele kapa ho monngoa ha lik'hemik'hale.
Tse latelang ke metsoako e 'maloa e tloaelehileng e sebetsang e sebelisoang hona joale ho sireletsa letlalo letsatsing.
| Motsoako oa Setlolo sa Letsatsi | Mefuta ea ho monya | Palo ea Polokeho① |
| BP-3 (131-57-7) | Leqhubu le lekhutšoanyane la UVB, UVA | 8 |
| UV-S (187393-00-6) | UVB, UVA | 1 |
| Etocrylene (5232-99-5) | Leqhubu le lekhutšoanyane la UVB, UVA | 1 |
| Octocrylene (6197-30-4) | Leqhubu le lekhutšoanyane la UVB, UVA | 2-3 |
| 2-ETHYLHEXYL4-METHOXYCINNAMATE(5466-77-3) | UVB | 5 |
| Avobenzone (70356-09-1) | UVA | 1-2 |
| Diethylaminohydroxybenzoyl hexyl benzoate (302776-68-7) | UVA | 2 |
| Ethylhexyl Triazone (88122-99-0) | UVB, UVA | 1 |
| Bisoctrizole (103597-45-1) | UVB, UVA | 1 |
| TRIS-BIPHENYL TRIAZINE (31274-51-8) | UVB, UVA | Ha ho Lintlha |
| Phenylbenzimidazole Sulfonic Acid (27503-81-7) | UVB | 2-3 |
| Homosalate (118-56-9) | UVB | 2-4 |
| ZnO (1314-13-2) | UVB, UVA | 2-6 |
| TiO2(13463-67-7) | UVB, UVA | 6 |
| Benzotriazolyl Dodecyl p-Cresol (125304-04-3) | UVB, UVA | 1 |
① Palo e tlase e bolela hore motsoako ona o bolokehile haholoanyane.
Mokhoa oa setlolo sa letsatsi sa lik'hemik'hale ke ho monya le ho fetola letlalo. Metsoako ea tlhaho e ka har'a setlolo sa letsatsi sa lik'hemik'hale e ka monya matla a mahlaseli a ultraviolet 'me ea a fetola matla a mocheso kapa mefuta e seng kotsi ea leseli. Mokhoa ona oa ts'ebetso o hloka karabelo ea lik'hemik'hale letlalong, kahoo metsoako e meng ea setlolo sa letsatsi sa lik'hemik'hale e ka baka ho teneha kapa ho alejiki letlalong. Leha ho le joalo, setlolo sa letsatsi sa lik'hemik'hale hangata se na le botsitso le ho kenella hantle, se etsa filimi e ts'oanang le e teteaneng e sireletsang holim'a letlalo, e fanang ka litlamorao tse betere tsa tšireletso ea letsatsi.
Khamphani ea rona e fana ka li-UV tse fapaneng tse monyang letlalo bakeng sa lihlahisoa tsa letlalo/tlhokomelo ea letlalo/litlolo, tse lumellanang le maemo a mangata a litlolo le meriana. U tla fumana karabo nakong ea lihora tse 48 kamora ho botsa.
Nako ea poso: Phuptjane-19-2025