I use Meguiar's Interior Detailer Spray Finish and a micro fiber towel.

 

I use Turtle wax ICE. It protects from UV damage and you can use it on all surfaces. It even got a stain out of carpet. I know people that have been working/ restoring cars for years and the tell me the problem with Armor all is if you stop useing it. When you stop that's when things dry out. That was in the past as for current formula ... time will tell

 

the only thing i used once was back to black cause i got some crap spilled on it and i used a micro fiber cloth to wipe it done with and to this day just micro fiber cloth and still looks like new matte! and it didnt really get that much build up after i did that!