If your car’s dashboard is showing its age with small cracks or dullness, head to the medicine cabinet for the solution: Vaseline. This petroleum jelly is an easy way to bring back the shine to your dashboard, but don’t go overboard. First, use a clean, damp rag to wash away dust, then dry thoroughly. Then, using a dry rag, wipe a very thin layer of Vaseline across the dashboard. Finally, use the cloth to smooth away any excess. Done!