A Digital Printing Network
I thought the same thing as Mike when I first read this post
Unless there was some verified data out there somewhere, I would stay miles away from providing children with a eco-solvent printed sticker to put on their faces
If I remember correctly, someone on here was doing stickers with Seramark to be used as "tattoos". Don't really see a problem with that if the ink is cured. I was thinking more along the lines of a traditional temporary tattoo application where the ink actually contacts the skin. Actually did a bit of googling on the subject and came across this patent:
Basically says the ink has to be skin safe, which solvent ink is not. So yea, highly doubt there's anything you could print to that's made for this purpose.