Description WRITE YOUR SECRET MESSAGEWrite your secret message with these invisible ink pens Light up the built-in UV light on the pens cover to reveal the invisible ink - the secret message. *Different color plastic magic pen, but please note that the ink is the same color SAFE AND NON-TOXICThe UV light pen is non-toxic, harmless and tasteless, which is safe for your kids Smooth and disappearing inks on t-shirts, paper, skin and any surface. Permanent but washable GREAT GIFT FOR FUN PARTY FAVORSThis magic pen comes in a pack of 14, which is perfect for surprise gift bags and party bag fillers for kids Tops up the happiness during Christmas, Birthday and Halloween parties READY-TO-USE PACKAGEThe package includes a notebook and 14 invisible magic pens per color with built-in UV lights. Use it anytime after you receive it Note: Children under 3 years are encouraged to use it under the supervision of parentsProducts from NIUNIUs store