headlight cleaning help...

Make sure you are wet sanding. Dry sanding will not be fine enough and could actually ruin the headlight by scratching it too much. You could even bump up to 2000 grit wet sand to get the scratches even finer.
You really need to sand for a while and after you rinse and wipe the headlight off after sanding, you may notice a few spots that need more sanding. Just keep doing it. PlastX and the spa polish can only get rid of very fine scratches.
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