On 7/16/2017 8:07 PM, Danny D. wrote:
> Overall, do those yellowed polycarbonate headlight deoxidizing chemicals or
> 1600-grit polishing solutions actually work well enough to be
> indistinguishable from new?
>
> We bought for a college kid an older Toyota Camry of the early 2002-2006
> model vintage where the polycarbonate on the headlights oxidized over time
> to a cloudy yellowed appearance (and the speaker covers on the rear deck
> are both burned off by sunlight).
>
> The kid has two options, of course, which is replace the oxidized
> headlights altogether, or try those "toothpaste & sandpaper" deoxidizing
> remedies on the net, which 'sound' maybe a bit too good to be true.
> http://www.jpauleytoyota.com/blog/ho...ights-at-home/
>
>
> While the pictures by the headlight-polishing companies are always
> impressive
> http://xfactorae.com
>
> Yet, this article says that abrasives will only work on "glass" lenses.
> http://www.ebay.com/gds/THE-TRUTH-AB...0945494/g.html
>
>
> Only someone with actual experience would know the answer to that question.
>
> Overall, do those yellowed polycarbonate headlight deoxidizing chemicals or
> 1600-grit polishing solutions actually work well enough to be
> indistinguishable from new?
>
> If so, which ones do you have the best experience with on Toyota
> headlights?

Problem is not just oxidation but erosion by particulates like sand.
You can polish back with tooth paste but the kit might contain an
ingredient that also makes the lens scratch resistant. I know of
commercial acrylic materials that do this and I suspect some lens
manufactures use them and some don't.