The previous owner of my truck apparently drove in the rain with the rear driver's side window down once and left a light water stain on the headliner...does anyone know of a good product to remove the stain? It isn't horrible but I like my stuff to be clean and look good! I guess washing with water wouldn't be a good idea since it made the stain in the first place.

 

First I'd try carpet stain remover. Then, I'd try a steam cleaner. If those don't work, re-wrap the headliner in alcantara! That'd be so cool!