Cleaning you headliner and leather.

Headliner
DO NOT USE A BRASH FOR A CLOTH LINING. ONLY USE A SOFT BRASH FOR A LEATHER LINING.
1. Make sure the surface is free of dirt.
2. Apply form on the surface you are cleaning, a portion.
3. Use a ummicrofiber towel to clean your surface.
4. If it has not changed, add foam cleaner, and use the dumb microfiber towel.
5. Clean off with a dry microfiber towel.
And you get good results.