Hi all. I normally just use an Automotive Wax on mine. Usually Meguiar's Cleaner Wax. Today I was looking at the inside of my HJC IS2. Noticed the inside need to be cleaned. Not knowing what to use I grabbed my Bissell "Green Machine" and sprayed the inside. Then took my can of Auto Upholstery cleaner and sprayed the inside. Used the Bissell to vacuum it out. Drying now. Find out how bad it looks when I come home from work tonight.