This magic Invisible UV Ink Pen will write your secret message! It is made of high-quality pp plastic with 3 different colors, including red, yellow and blue. The message is invisible when written with this pen on normal natural light unless you shine the UV light on it. The invisible pen comes with a UV light powered by 3 LR41 batteries, just turn on or off the light with a simple button. Perfect use on the cloth, normal paper and skin.
