If you have time, the rubber channels that the glass ride in also get "sticky" with age. Silicon spray works great for that. At least, that's what this mechanic says. I've never needed to do it before, but I have noticed it on my sibling's cars. I've thought about trying it out for them. How To Replace A Window Run Channel ( 97 Honda Accord) - EricTheCarGuy - YouTube
Its exactly what this guy saiiddd lol I had forgotten this was in this thread