While cleaning up a 'new to me' car, I used Goo-Gone to remove glue residue from stickers.
There was an odd "cloudy" finish on various controls, the stalks, a few favored radio control buttons and elsewhere.
I whisked these stains quickly with the rag and it all came off.
This made me happy as I thought the plastic was permanently discolored.
I'd be cautious regarding foaming the entire dashboard.