I lalo o faʻapitoa tulaga, coatings ma vali pei o fafo vali, valivali, taʻavale vali, o le a faʻatelevaveina le soifua matua, peʻa maeʻa umi ona faʻaalia i ultraviolet radiation, malamalama tuai, okesene vevela.
O le auala sili ona aoga e faʻaleleia ai le ufiufi o le tau i le tulaga o le faʻaopopo o le vailaʻau ma le faʻamautuina o le malamalama, e mafai ai ona faʻatamaia ai le faʻaaogaina o vailaʻau e leai se tau i le palasitino resin, faʻamaʻapeʻapeina o le hydrogen peroxide, ma puʻeina saoloto radicals, ina ia mafai ai ona maua se puipuiga tumau mo resin palasitika, ma matua faʻatuai le leiloa o gloss, samasama ma pulverization o ufiufi.