I just used the hairdryer over and over and let it sit on baseboard heater awhile and turned it this way and that. It didn't all come off in 1 day.
But you couldn't even tell it had been vaselined unless you knew why the sticker on the back looks discolored.
I would have used the dishwasher too, but it's broken.
If there was a spot I wanted to glue to, I'd buy a can of QD electronics cleaner down at the auto parts store.
Mine is clean as a whistle and there was no shortage of vaseline on it.
I love it.