Use two-towel strategy: one to apply purifier, one dry to buff the windshield streak-unfastened

https://wiki-book.win/index.php/Car_Window_Repair_Asheville_28803:_Fast_Fixes_for_Busy_Drivers

Use two-towel way: one to use cleanser, one dry to buff the windshield streak-loose, getting better readability and chopping glare below all situations.