The interior plastics on our Insight 2 's aren't the classiest are they ? Mine, including the blue radio fascia looked jaded until I "discovered" Wynns Cockpit Shine here in the UK (I'm sure I've seen it in Walmarts in the USA too). What a difference it's made! Just spray all over the dash, door plastics, handbrake area etc, then a quick wipe and it's looking brand new again, so easy yet so effective.
If your interior plastic surfaces are needing some TLC, give it a try, I'm sure you'll be pleasantly surprised.