If you have access to an automotive repair store or a home repair store with a paint department, go in and get wet sand paper that is 1500 grit. Using a hose or spray bottle, keep the headlight really wet while sanding. Sand until the yellow is gone. Then go to the automotive repair store and ask for a kit to re-clear your headlights. Follow the instructions on the kit and you're done.

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I first sanded the lens well on the car, about 20 minutes each. Wipe
with a clean cloth. Applied BlueMagic metal polish.

 

My Toyota dealer recommended Wolfgang Plastik Lens Cleaning System. It's available directly from the manufacturer http://www.wolfgangcarcare.com/plast...-cleaning.html
Doesn't look too complicated to use. I just ordered the system.

 

soo sanding works i have done this many times on various cars....but i start out with 800 grit to get the big dings and big gunk off then go to 1000 and then 2000 but wet sanding is the key lot and LOTS of water and time the more time the nicer they get ... i spend atleast 20-30 min a lens then let dry......and use any polishing compound buff out then you can even wax after that to help keep it "blinging" for lack of better words......and remember to leave the bulbs in them so you dont get water in them or you well have to crack them open....and thats a whole other story......good look

 

I tried to clean my lense and found that the yellowing color as well as lille cracks were in the plastic and buffing did not take these out. I ended up getting aftermarket lenses for $80.00 on ebay to my door. Nothing like new lenses!

 

I have a 1999 camry when I first got it, it had horrible looking headlights, But i just bought new ones for $50 for 2. now they look awesome.

 

would you mind sharing us some photos of it?

 

Sure =)

...Turns out the only time I ever put a camera near the old headlights is when it came limping home in an accident.

The *Only* shot I have of it is you can compare that piece that has not broken off yet. Sorry.
Both of these pictures are screen shots from video.

 

I used 3M wet/dry polish paper - faster and less work/faster for me than metal (silver polish use for polishing silver ware). I didn't use a whole sheet of polish paper on the car both car lens.

Various Sources - didn't bookmark the jewelry supply shop in the southwest, perhaps it was in Arizona, its been too long ago - The "package" I procured - grit sizes in package was from 1,200 grit to 14,000 (2 micron) grit.

Specification on the polish paper in the link below (don't know if this is allowed) if not, use a search engine for "3M Wet/Dry Polish Paper" to get to the 3M companies web site; as for reviews, that obvious - just add reviews to the string.


Wetordry Polishing Papers: Electronic Solutions : 3M United States

Look at the reviews on Amazon