It leaves a beautiful imprint on the wax. It's even better than I expected. A good tip if you have to do multiple wax stamps: put the stamp on an ice pack while you heat up your wax. It'll help pull the stamp away from the wax.
I used this to stamp it on the backs of my paintings. Let the stamp sit on the wax for a minute before to try to take it off. I love it and would definitely purchase it again.