I meant to state the product I use is called Novus 1.They make 3 versions. I use it a couple of times a year, it really puts the shine back to original. I also use a swifter several times a month.
ozzy
"Novus Plastic Polish - Novus 1 - Plastic Clean & Shine Gently cleans all plastics without scratching. Leaves a lustrous shine that resists fogging, repels dust, and eliminates static. Resists finger marking Contains no abrasives or harsh chemicals Leaves a smooth, clean, greaseless shine FEATURES AND BENEFITS of Novus 1 - Clean & Shine"