Foggy headlight lenses
 

My lenses look foggy and tired. Is there a way of making them look new again?

Thanks

There's a thing, does the lens come away from the casing. Emmm wait.......Possibly as mine has a rubber seal between glass and plastic case. There is also retainer mounts on case to hold glass in place. May need sealant though if you do manage to get them off.
Mine needing cleaned inside as well...

Thanks. Thought it would be a simple process :(

I seem to remember there were a few "how to" postings for lens refurbishment on this very website a couple or so years ago. And someone had produced a kit for same.
In case you can get them apart, the lenses should be restorable with jeweller's rouge, that pink powder. In fact any glass cleaner that's pink will almost certainly have the jeweller's rouge in it. It's hard work though -- the rouge only takes off a minute surface amount of the thing being polished. That's how it gets things so shiny. Some silver cleaners also have the rouge in them, plus a tarnish shifter. This should not upset a plastic or glass lens.

Leedsman.

Try this
I used a similar product and polished the lens with my DAP polish machine after removing deep scratches with very fine waterproof sandpaper and my headlights look like new. It really makes your car look 5 years younger :D

Usually the foggy look is due to some form of minute deposits, ie salt, sticking then hardening to the lens. You can get great results just by using P2000 wet & dry sandpaper and then using a fine cutting compound and a buffing machine to shine the glass. I have done this before on mine and friends cars. The lenses on my current GV are still looking like new and obviously lighting up the road well which is more important than looks.

Lots of product[s] and how to's on youtube

Try tcut first.

Brasso ?

Indeed there are lots of products for this.
Personally I love the Meguiar products, I use their range of products to keep the 30 year old "signalred" paint of my Mercedes in good condition.
I tried a lot of different brands but Meguiar came out best. Meguiar is expensive but well worth it imho.