Best way is to buy a new pair of headlights from Swat Trading on street 17, Wakalat Road for special price of Qar. 200/- (if it is honda accord, for civic it should be lesser). Polishing and cleaning will cost you more and also will not improve your visibility at night, moreover new headlights would give a new image to your car as well as excellent visibility. Telephone # 44 5000 61,