CLARIVOX Windshield Restoration and Oil Removal Brush (150ml)That greasy haze isnt dirt. Its oil film and its why your glass keeps smearing and flaring. I kept saying I couldnt see properly when the sun hit the glass, even though everyone insisted it was clean. One pass with CLARIVOX and the windscreen went crystal clear. The glare was gone it genuinely made driving feel calmer again. Aoife M., Cork Cuts Through the Real Problem Not Just Surface Dirt You wash the car, wipe the glass, and it still looks smeary.