I actually use PlastX for maintenance on my headlights, as well. Just a drop on a microfiber. I don't get after it hard or anything. But every couple of months I'll put a drop on, spread, and wipe until it's gone. IMO it's like a deep clean that removes any built up film and maintains a like new surface. My justification (hunch) is that it keeps things smooth at the micro level and prevents degradation from occurring. I've been told it'll remove the factory UV coating. Maybe it will in 30 years. I have a set of headlights that I've done this to for several years and they look like they did on day 1. No question in my mind that I'm on the right track.
Compounds and polishes for paint have worked just fine for me ever since I started doing corrections quite a while ago. I see no need for specialty polishes for headlights and taillights as of yet.
PlastX vote for me also. I have also treated them like paint with whatever compound I'm using though, then an LSP. Last vehicle I did with PRC has some pretty good sized tail lights that were molded in line with the back hatch so I used PRC on them. It worked great as well.
Like Harpolith mentioned, PlastX works well as maintenance on headlights too. And on motorcycle windshields.
Lydia's Mobile Detailing
Professional Detailing since 2007 Green 1997 Dodge Dakota SLT V8 & Silver 2007 Honda ST1300
I use a polish but before I apply the polish to my pad I hit it with a spray using Honda Polish/Cleaner.
It's a method I've been using for years.
The Honda cleaner works great for plastics.
Once done the taillights and also headlights new brand new.
The Honda Polish/Cleaner also works on paint, chrome and glass.
I buy mine at a local dealership for under six bucks , simply awesome
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