I just installed some Hella 500's and I also bought Lamin-X for them but I was wondering when you put on the lamin-x can you ever take it off? Please me know thank you!

You can take it off, but you can't really reapply it effectively at that point.

Right- it's removable, but not reusable. It just peels off the glass lens, and any residue can be removed with glass cleaner or alcohol. If you want to re-apply it, you'll need to buy new film.