2 yrs ago, I used the good old BRASSO on plastick headlamps of a Mitsu-Lancer. The lenses are still very clear.

Same stuff can also restore lightly scratched & skipping CDs & DVDs!!

Visit:
http://www.ehow.com/how_...-headlights-brasso.html

@Qranj

Did you restore the external or internal surface of the headlamps?

@Njug'e
Is your friends ring made of brass?

@Chaka,
AAiiiiiiii....!!.....Kwani headlamps za moti yako are made of brass??...lol....Read this

Brasso brand commonly known as Brasso metal polish has many different uses around the home and lawn area. It is an all-purpose metal polish that can be used on a variety of metals such as brass, stainless steel, copper, chrome, aluminum and bronze. Brasso is available at most hardware stores and comes in different formulations for different uses. Original Brasso is generally safe to use on most metals, with the exception of sterling silver.

@Chaka

I only restored the external surface. The headlamps are completely sealed so the inner surface is not discoloured.

@Njunge

Brasso is simply a mild solvent and an extremely fine abrasive.
The misty appearance on faded headlamps (read faded plastic) is caused by fine scratches on the surface. The brown-ish discolouration is due to oxidation, including fine dust getting trapped inside those scratches.

Brasso evens out those fine scratches such that fine dust cannot hold onto the plastic headlamp. It also disolves the thin oxidised layer that forms due to exposure to sunlight (UV), rain etc

Just apply & rub the stuff using cotton wool, leave it for a 1-2 minutes to dry into a haze, then rub it off / buff with a soft dry cloth. If in doubt, try it out on a small inconspicuous corner of the headlamp.

This is not guess work, its something I'm still doing. Read about "Other Uses of Brasso" on http://en.wikipedia.org/wiki/Brasso

I had also read about brasso elesewhere.Looks like jamaas here started a similar biz and spoilt the market?