[6ixSpd]

The PFF is fairly cheap as well. It cost me $100 to have it installed on top of the lenses. All in, that's like $130 in parts which is easily cheaper than new headlights.

Another poster just used sanding, polishing, and WN and it has held up for a year, because he hasn't updated the thread since. So the take away is that this process actually does work, the benefits of adding film are debatable but it doesn't hurt other than the minor cost of having it done. Scientifically speaking, this is simply because no one has tested WN alone vs. WN + PFF for beyond 12 months to see the effect. All we know is that WN alone has held up for at least a year and we have no data beyond that. WN + PFF has held up for at least a year, and we have two data points beyond that. Take from that what you will.

So if you REALLY want to ensure the longest lasting solution, use WN and PFF. Another guy in that thread has had this combo for a few years and they still look great. Otherwise just do WN and see how it goes as it's been proven to last at least a year already.

Look up what Wipe New is composed of. It is not just a "coating" like with all these other surface protectants. This is where you're missing the point that it will just wear off quickly with washes, etc. It's not a top layer additive. A thread on Reddit explains this in more detail.