Yellow tint sun-faded headlights

[DeTomato]

After a few years of standing, my plastic lens front headlights have turned a faint yellow tint from being bleached by the hot sun.

I'm not sure what to clean this yellow surface film off with?

I tried washing up liquid and water but that didn't shift it at all.

Any ideas please?

[FROSTYBALLS]

One can use anything from toothpaste up to specialist cleaning kits from Meguiars, Turtle Wax, etc available from the likes of Amazon, Halfords, etc. Eg - 

 

[DeTomato]

Ah right, that's good. So I checked this out and just cleaned my headlights with toothpaste which apparently acts like a very fine cutting compound on the plastic headlight lens cover. But, not just any old toothpaste; I used some sodium bicarbonate in the toothpaste because this is apparently more effective than ordinary everyday toothpaste. Once washed off I put some Rain-X on the lens and buffed up. And, yes it actually works! Great job. Thanks Frostyballs