Plastic Headlight Sealer - To Stop Yellowing

[KTMsm]

I'm perfectly happy using a mop and cutting compound to clean headlights but can anyone recommend a good sealer to prevent them yellowing again

I do not want a polishing kit, just a sealer

[Belle427]

Maybe consider going for ppf for long term protection.
I've always coated mine regularly with the same product I use on the paint with no ill effects.
In2detailing have some long term protection products on their site but I have not tried them.

[SAS Tom]

I paint over them with Lacquer. Seems to have worked so far. A couple of coats of lacquer then polish it back.

[lufbramatt]

I used the 3M 39173 headlight sealer wipes on my 2002 E39 headlights last year as they were going really cloudy.

Sanded with 4000-2000 grit w+d then used the 3m Trizact pad that came with the wipes. Took a while to sand through the old coating that had started to fail, I think the key is to remove it all so you get down to the plastic lens and it doesn't look patchy. Came up really nice. still look just as good after 14 months. No yellowing and have held the gloss well.

2k laquer probably a better long term solution but needed something quick, cheap and DIYable to get through MOT.

[steveo3002]

2k clear ..get it from ebay £15-20 a can , works a treat