I found this process works well on the inside of the windshield. Clean the glass with a Mr Clean Magic Erase sponge, the use the glass cleaner. Mr Clean gets all of the outgassing residue off the inside. Drove me crazy to clean the inside one day and then the first morning with humidity it looked like crap. If you get the residue off first, I'm not sure it really makes any difference what glass cleaner you use. I could never find one that did a really good job.