Invisible Ink Pen 24Pcs Spy Pen with UV Light Magic Marker Kid Pens for Secret Message and Birthday Party,Writing Secret Message for Easter Day Halloween Christmas Party Bag Gift

INVISIBLE INK PEN: The ink is invisible after you write with it, unless you light on the cap blacklight to see the secret message perfectly. WRITE YOUR SECRET MESSAGE： Once your secret message is written with this invisible ink pen, you just need to wait for a few seconds and use the light on pen cap to make the words appear, so funny and amazing。you can easily host a kid’s birthday party favors stocking stuffer, treasure hunt,escape room,or classroom activity complete with invisible ink clues!