If you’re a die-hard Harry Potter fan and you want to get a tattoo inspired by J. K. Rowling’s wildly popular book series, you may want to consider one of these awesome blacklight tattoos that remain hidden until they are revealed under a special UV light. It’s the perfect piece of ink for Harry Potter fans who want to recreate the magic of the series in a mysterious tattoo design. In the interest of full disclosure, several doctors and tattoo artists have spoken out against this type of ink, warning that blacklight tattoos may contain phosphorus, a UV-reactive element that can be toxic to humans. However, famed NYC-based tattoo artist, JonBoy, says they are perfectly safe, and even has a blacklight tattoo of his own. So check them out!