Fire Starter Using Cotton Ball & Vaseline

Want to do some island camping, so I took an outdoor skills class through REI this weekend.
In this video, our instructor, Fred Taytay - an ex-Marine infantry soldier, shows us how a simple cotton ball dabbed in Vaseline petroleum jelly makes an excellent fire starter. He said Neosporin which he said to include in your med kit does the same thing. One of the other participants in the class said they use laundry lint from the dryer screen (FREE) to do the same thing.
He's using a ferrocerium rod to create a spark to set it off.
This would be tinder. Make sure to have kindling and fuel (bigger pieces of wood) on hand and ready to go.