I just did mine today with Black magic pro shine interior protectant. I'm a big fan of this stuff.
I got a tiny bottle of this stuff several years ago and I still have a lot left. The results are good whenever I use this stuff but it does have a smell that some may take issue with. Personally I'm not bothered by it. I have also found it to have multiple uses. It can renew many types of black or grey plastics around the house and works well as a lubricant for some things with plastic gears.
So whats your fav?