I made a quick video on how to restore headlights using 2k Clear. It's been almost a year and they still look brand new. If your headlights are yellow or foggy, giving this a shot.

 

Looks good. Yup, without that 2K clear it starts turning yellow again in a few months. Ive already buffed mine back to clear twice now. Maybe next time I’ll hit it with the 2K clear. I get lazy tho lol.

 

Same, I did multiple restore kits, which always turned yellow after 6 months max. Give the 2k clear a shot, you'll probably never have to do it again before selling your car.

 

Well, 600 grit wet sand, then 1000, then 2000 then dry them and clear coat them using a rattle can or a spray gun. Its what i do to all cheap chinese yellow headlights..

 

Yep. I used that Sylvania UV clear coat but with the 3M sanding/polishing kit. I think I got about 3-4 years before they started turning slightly yellow again. I regret not picking up a pair 06-07 headlights when they could still be had new.