Invisible Ink Pen with UV Light

This magical invisible ink pen will write your secret message. Once your secret message has been written with this invisible ink pen, wait a few seconds to shine the light from the pen's cover and reveal the secret of the secret message. Harmless and tasteless ink, healthy toy for your kids! Smooth and colorful disappearing inks on t-shirts, paper, Permanent but washable! Parents can buy it for their kids party at home. Kids love using this kind of pen to keep their secret and play detective spy games.