what do you guys suggest i use to clean a headliner on a car or suv? i know that there shouldnt be too much scrubbing bc that can damage the headliner and make it sag or ruin it.
Light solution of woolite applied to the towel and only lightly moisten the headliner. Never get it wet because that will most likely cause very negative outcomes.
Microfibers and carefully center-away strokes allowing the MF to absorb your cleaner of choice. I have used anything from LM cleaner to 1zBlitz carefully diluted. It takes some time, but is worth the efforts if its bad enough.
I use a light solution of APC, sprayed directly onto a MF and wipe gently. Never spray directly onto the headliner itself, or you can get water staining and other problems. Woolite solution should work good too if you don't have any APC.