What can I use to clean the headliner. The techs at the Acura dealership got their fingerprints on the headliner. I tried using carpet cleaner it left a ring stain on it. What can I use to get that off the headliner with the dirty finger prints? Any suggestions, thnx for the help. I own a WDP too.

 

I have WDP/Parchment and had a couple of finger prints on the A pillar and used simple green(straight)and they came off with no residue or shadowing effect.

 

Mild dishwashing soap well diluted with distilled water, then press it with a miracle towel or deep terry cloth to wick off the moisture.

Stoner Xenit also is good - I have used it on the headliner.