The simplest, and most effective DIY product you can use is common Silicone Rubber, which is commonly available at any Hardware store. You can apply it and smooth it on very easily. It remains flexible, which is what you want.

They come in various colors, but if you can't get a close match you can always mix some color into it to try and get as close as you can to your dash color.

Its very hard to screw-up the job, and if you match the color, the repair will be almost invisible.

Phil

__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]