plastic restorer

What products do people rate for keeping the exterior black plastics such as the grille and bumper trim clean and looking new.

Calling you detailing geeks! What’s the best product to clean up this please?

The detailer who came the other day didn't have time to do the bumper protector bought with the van and fitted by the dealer - the van is a year old and the plastic looks about ten years old - shocking amount of fading and staining. Anyone tried anything? I have a plastic restorer but it...