After using Meguires #10 and #17 on my rear window a couples weeks ago I thought Hmmm maybe it will do some good to the plastic covering the headlights. Mine have been getting a little hazy (not to clear) so I gave it a try and it made great improvements. I all so used it on my plastic windshield on my motorcycle with great results, I guess it works on anything plastic. Haven’t heard of anybody doing this, just thought I pass it along.