We had a blast making this t-shirt with the
glow-in-the-dark paint set, with only three trips to the bathroom to
see it glow before the paint dried. LOL. It's really neat, because the
blue paint glows blue, and the pink paint glows pink, etc. I was
pleased with the fine line capability of the pens, and she was just
tickled to get to paint a shirt. It was a GREAT rainy-day craft
project for the kid. Non-toxic paints.