i know you're talking about the interior but today i just cleaned the exterior and here's what i used:
first i cleaned it with armorall carwash wipes. I used 3 wipes to clean the entire car which had nasty salt on it and a few instances of bird poop.. cleaned the car well
next i used Meguir's Synthetic Polymer! Its better than wax for reasons I dont care to explain but it was pretty easy to apply: I just spread it on and wiped it off. The "curing" period was only 10-15 minutes and then I decided to test it. It had snowed so there was a bunch of wet crap all around and I went on the highway for about 40 minutes (to various places including Chili's with friends). After I came home at 10:40 pm, the car was IMMACULATE! I even checked the rear of the car where lots of grime splashed up and encrusts itself on the bumper.. COMPLETELY CLEAN! I was amazed... and then I thought there were 2 dirt specs on the side mirror, but it was just beaded water. Anyways... If you wanna keep your car shiny and clean I would recommend this
and also Rain-X for the windows (i have to reapply that, it comes in wipes too). What I love best is that synthetic polymer shines more than just normal wax and creates a strong bond so you don't have to re-apply as often. It was 3 times as expensive however...