I had tried the Meguiar's Detail Spray and it didn't do anything to bring back beading of the water. I know...it's probably different since it's not Adam's.
I looked at the Adam's Glass Sealant, but it's not cheap and I've read a couple of posts that it didn't last long.
I also think that the left over windshield washer fluid I have in has a de-icer (daily MN driver) in it...that may have stripped the waxing off.
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