What is the best product & way to clean acrylic skylights?

If they have discolored they make products to buff it out which is also used on the plastic lenses of cars, you can purchase this at most auto stores for around seven or eight dollars, you will have to apply several coats and buff it out, I use a damp sponge to apply the cream on our head lights. I think the last I used was put out by Meguire's it is called Plastic X or something like that, there is also one called Blue Magic, prices can go up to $20.00 or more for different products.What is the best product %26amp; way to clean acrylic skylights?
there is a product called Mr. Shine or sun of the gun. ~$4.00





available at any supermarket or auto shop