Review (5/5): Awesome. Only thing is you must premoisten.
You need to put a little water on each to get them going. Then it's all easy. 8 kids used these and they cleaned up great and goes in blacklight awesomely. One of the kids wants the same party next year and these paints don't even look used so I'll be loaning them to his parents for the party.
Edit: you must keep these covered. My daughter went back and played with these and didn't put the little covers back on and now they are all shrunken and cracked. Unusable.