Quote Originally Posted by RootsRadical View Post
I, too, use a steamer to clean headliners. I spray a bit of APC on a terry cloth towel, fold it over the brush attachment, blast it with a hit of steam, and use the hot towel to clean the dirt from the headliner. I don`t use a direct hit of steam on the liner except possibly for a brief second if the liner is exceptionally dirty.
I do same, i think this is best way to clean safely.