Didn't see anything specific for those wanting to clean the inside of the glass in between washes/detailing. Well, here are a couple methods I've used that work pretty well.
The more expensive way - Invisible Glass and fine microfiber cloths for glass. Spray the IG as directed and used the cloth to wipe it off and clean the glass. CON: If like me, there will be streaks that are a pain to remove after things have dried.
The less expensive way - Magic Eraser and paper towels. I used the foaming Mr. Clean bathroom ones. Get it moderately wet and wipe the area of the glass, followed by use of paper towels to dry thoroughly. The eraser I used has a smooth side and a knobby side with very low foaming action. I used the knobby side. PRO: If there is a streak or two, the use of a regular microfiber cloth will remove it.
And there is the old vinegar and newspaper solution if you want to go that route. I've never used it TBH.
BTW - a slightly damp Magic Eraser can be used to remove a grease spot or two that might get on light colored parts of the interior. Gentle rubbing followed by light pat dry with paper towel.
Edited by Cobra348, 14 November 2016 - 02:09 PM.