Besides reinforcing it, a few do it yourself tips to keep it in the best shape possible. My mint dash is my number 1 interior priority.
1. Invest in a large, think sun shade visor that covers the entire dash and cover your dash when you're away from the vehicle for more than an hour.
2. Weather permitting, crack your windows and let the interior vent out from the heat.
3. Keep it clean and dust free to keep it color.
4. And this one is crucial, if you forget the shade or its just hot, always let the windows down for a time before cranking the AC. I know people and have heard stories of extreme heat on the dash and as soon as they threw the AC on high on defrost or front panels that sucker split like Pangeia from the rapid temp change.