Stubborn Water Spots on Windshield

[Snowman]

I recall somewhere in the forum members talking about using one of the items in the Prof. line to help with giving your glass a little bit of a "polish" boost and a cleaning. I believe it was the #2 product but could someone please clarify. I have a bunch of stubborn water spots on my windshield from my last washing and I am wondering if this will draw them out. I have done the claying of the windshield with great results but thought I would try this other trick that I have heard bouncing around out there. Thanks

[sneek]

i think it was #4

Glass Polishing...Deep Cleaning

[Snowman]

That would be the one. Thank you kindly!!