Cool idea in theory, but that particular brand was awful. I got them for our WDW trip earlier this month. They don't go on like regular temp. tattoos at all, but rather, when you peel the plastic top layer off the tattoo surface is sticky. Unfortunately, after you apply it, following all the directions to the letter (and I tried 4 or 5 different tattoos, thinking maybe I just messed up the first one or two), the surface of the tattoo stays sticky---like the adhesive side of a bandaid. They were horrid! Once I got them on, they stuck to my girls' tshirts, hair, everything. Of course I didn't have the recommended baby oil or rubbing alcohol with me on vacation to get them off either so we had to live with it for a day or so until I could get it all scrubbed off---like trying to get a stubborn price tag off a picture frame!
Threw the rest of them away. Will find another way to "label" my kids next time!