nasty yellow stuff

[camryLI]

has anyone attempted to clean the inside of the headlight covers? i got this yellow gunk on the inside, and wanted to clean them. If so how. 92gen3
--LI

[camryLI]

come on help me out!

[alex]

I don't know for sure, but i've heard toothpaste and a toothbrush helps quite a bit.

[Razo-E]

i think that's all of the "minerals" that get left behind after the water trapped in the headlight housing evaporates, so tooth paste should work, or use that CLR crap, but i think that may mess up the headlight...

[Tony the Tiger]

This is taken from the lighting FAQ:

How do I clean a reflector lamp?
Cleaning the outside of a headlight should preferrably be done with soap and water, and is considered very streigth forward.

However, cleaning the inside of a headlamp becomes more tricky since you will face the same challenges as cleaning the inside of a bottle:
Remove the headlight bulb.
Remove the headlight from the car.
Fill the headlight about 1/2 full of distilled water and put in a few drops of dishwashing liquid.
Cover the bulb opening and shake the housing for a minute or so.
Pour out the soapy water.
Fill the headlight about 1/2 full of distilled water.
Shake, drain.
Repeat rinse.
Rinse again with 1/4 cup of rubbing alcohol added (promotes drying).
Drain.
Let headlight dry, open end down (overnight), or you can use a hair dryer to speed things up.
Reinstall headlight.
Reinstall bulb.