Film on headlight plastic

I complained at the garage which supplied the car - they made a major improvement at no charge during a service. As I see it, they have not used a suitable material to make them in the first place.

Kind of reminds me of a long long time ago when cycle lamps were just a bulb in a box with a battery and the windows used to go yellow in the sun almost overnight. Many people just used bits of old transparent packaging cut to fit! It worries me that after all this time things are still substantially the same in this area. Brian

Which T-Cut did you use? The original designed for solid colours is probably the best. Or any metal polish like Brasso.

I found Brasso useless for this purpose. Simply did not cut into the plastic enough to make any difference other than removing the remaining dirt from the surface.

It's a fine abrasive. Obviously, the 'film' on the lens goes quite deep, so probably easiest to start with a coarser abrasive to shift the layer then graduate to finer and finer. Just as you'd do with car paint. ;-)

If it is just on the surface - try wetting a finger tip, running that across the surface and if it then seems to clear, then - Try Brasso, tooth paste or metal polish.

It was a tube of 'scratch remover' - not the can of runny stuff I have used in the past. The garage suggested T-cut in preference to Brasso as something to do with its ammonia content.

Well they would do, wouldn't they? :-)

I've tried the toothpaste method and the rough side of a foam pan scrub. Limited success.

Not enough. Tried them all. They all seem to start doing something but do not, IME, cut deeply enough to polish out the damage in a finite time.

Then you need to start with a coarser abrasive. As I said, it's just like polishing up new car paint.

Something like 1000 grade wet or dry used wet would be a good starting point. If that is also too fine move to a grade coarser.