I had this happen on my old mk4 golf,resolved it immediately by replacing the pollen filter. If this hasn't been changed for a while, it can cause the interior to steam up a lot. Just a thought...
Some of what you're on please ..
and newspapers to clean...... didn't they do that in WWII
I use a degreaser we have at work called spectrum, smells of Oranges and is a Blanket/Roller wash, works a treat and good for cleaning your alloys too
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How how did i find this out. Well i got some on a mirror in my bathroom wiped it off then had a shower. There was a round spot on mirror with no steam