Vertical marks/lines on windscreen - how to get rid of them?

[ShiWarrior]

nice one !

your welcome

 

[Feek]

Now, the only thing I can think of is about a month ago I started using the Autoglym Polar range. So Polar Blast then Polar Wash then finally Polar Seal (not at every wash I hasten to add)

Out of interest, because I’m nosey. How many times have you washed your car in that month?

 

[Draeger]

Out of interest, because I’m nosey. How many times have you washed your car in that month?

Maybe once a week? But I'll only apply Polar Seal maybe every 6 to 8 weeks though. Generally it'll get rinsed, Polar Blast applied, rinsed off then Polar Wash applied which gets agitated with a wash mit, then rinsed and dried off with two Halfrauds drying towels - one to take the majority of water off then I go over it lightly a second time to mop up any remaining water or streaks.