Hajoale, re fana ka khetho ea lihlopha tsa leseli, ho kenyelletsa 305nm, 308nm, 310nm, 311nm, le 315nm, joalo-joalo. Maqhubu ana a fapaneng a u lumella ho khetha bolelele bo nepahetseng bo lumellanang le litlhoko tsa hau. Ebang ke bakeng sa likopo tsa bongaka, boiteko ba ho etsa lipatlisiso, kapa liindasteri tse khethehileng, litharollo tsa rona tsa UVB li etselitsoe ho khotsofatsa merero e mengata.
Leeto le qala ka pono ea hau. Sehlopha sa rona se nang le litsebo se ikemiselitse ho fetolela mehopolo ea hau hore e be 'nete, ho netefatsa hore hlooho e' ngoe le e 'ngoe ea lebone e sebetsa e le lebone la boqapi. Re utloisisa hore boholo bo le bong ha bo lekane kaofela, ke ka lebaka leo re fetang ho fana ka litharollo tse etselitsoeng ho phahamisa boiphihlelo ba hau.
Se re khethollang hase feela boleng ba lihlahisoa tsa rona empa botebo ba boitlamo ba rona katlehong ea hau. Lipheo tsa hau e ba sepheo sa rona, 'me litharollo tsa rona tsa UVB ke tsona tse u thusang hore u atlehe. Ha re tlise lihlahisoa feela; re fana ka menyetla.
Amohela bokamoso ba khanya le rona. Khantša tsela ea hau ea bokhabane 'me u hlahlobe menyetla e sa feleng ea tharollo ea UVB ea motho ka mong. Eba le rona ho lelekisa boqapi, moo bolelele bo bong le bo bong bo pheta pale e ikhethang, 'me hlooho e' ngoe le e 'ngoe ea lebone ke bopaki ba boinehelo ba rona katlehong ea hau.
Eba le phapang ka litharollo tse ikhethileng tsa UVB – hobane leeto la hau le lokeloa ke li-Chips tsa eona tsa UV.