it shows na madumi ang paint surface mo kung during buffing ng wax ay nagiging marumi yung pamunas wala dapat dumi sa buffing cloth kung nag-apply ka na ng wax. it means you are not washing your car thoroughly and properly. dapat bago ka mag-apply ng mga sealant or wax, properly prepped yung paint surface mo, o wala halos dumi or contaminants. kung wala kang clay o di mo balak mag clay, pwede naman wash>dry>kaio then apply ksg. bago mo I-polish ng kaio dapat mahugasan ng mabuti else yung mga dumi kapag kumapit sa applicator pad mo at buffing cloth, gasgas abutin mo niyan. after application ng kaio pa lang, dapat makinis at makintab na tingnan. after polishing ng kai, you can wash it again para matanggal yung kaio at maganda ang kapit ng ksg. or kung tamad ka maghugas pwede mo rin punasan ng rubbing alcohol diluted sa water 50:50. then apply mo yung ksg manipis na manipis lang or else mahirap I-buff kung makapal lagay mo. after buffing the ksg, wait ka ng mga 4-8hrs to cure then pwede mo na patungan ng nanoglos o 3m. the ksg if properly applied and let cured to bond to the paint surface can last many washings. in between your next washings, pwede na yung nanoglos/3m. after some months at nawawala na ulit kintab pwede ka na ulit mag kaio/ksg application.