Water Spots on glass

i found the cheapest way to get rid of hard stuck on water spots that are old and wont scratch the glass. use turtle wax rubbing compund

it only cost 4 bucks and you can doo all window and i used only like 1/16 of the container. it doesnt even scratch the glass

 

You could also use detail clay

 

I used this on mine when I bought my truck. It works really well. Got it at a NAPA store.

 

All of the above. If you have a DA polisher, you can even polish the glass with a finishing polish at the end of your detailing session (finishing polish likely the last product on your pads at that point).

 

White vinegar and a paper towel. Trust me..... You will be amazed.....

Just wet a clean paper towel with white vinegar and wipe the windows. The hard water spots will vanish before your eyes with virtually zero effort......