Invisible Ink Pen with UV Light Secret Message Pen Spy Pens Magic Invisible Markers Classroom Gifts for Students, Party Favors for Kids 8-12, Goodie Bag Stuffers for Kids

Bought these to write letters to my niece. The to work great and we are having lots of fun writing our secret letters !

Grandson loves these pens. They actually work. Can't see what's written unless you put the light on it. Great little gift

Got as a Christmas gift for my son because he’s been telling me he wants an invisible ink pen and we’ve had so much fun ever since Christmas! We even write on our hand little messages to each other and then use the glowing part to reveal the message. He has shown other children and they’re impressed by these pens as well. Parents are asking me where I got them. They’re good quality, very durable, great value for the money since you get four. They are easy to use to use and they do dry quickly.

The media could not be loaded. My 6 and 4 year old thought these were so cool! So far have held up great except the occasional flickering of the lights. It does initially show up on colored paper, but quickly disappears (see video for example).

My son asked for these pens after seeing them at a book fair. He took them the same day they arrived to a football game. It was a little cold outside but the pens wrote smooth for the entire game. No one had any idea was he was writing down until he used the black light that's attached to the cap of the pen. He loves that he can write secret messages and I love that he's practicing his writing skills so it's a win / win. The four pens glow in the same color so the pen color is not an indication of ink glow color. All the inks are clear and you need the Black light that's attached to the cap of wach pen to see the message. This was the best deal I came across for this type of pen. My toddler also lost the cap after stealing it from his brother's room and after 2 hours without a cap it still writes.

Pretty good product for the price. Used for stocking stuffers for kiddos.

I am not sure if it was the product or that my grandkids just were not interested, but I got these for them for stocking stuffers and they pretty much just put them aside. Maybe it was because they were overwhelmed with other more impressive gifts. But I still have not seen them use them.

The media could not be loaded. The KERRT Invisible Ink Pens were a big hit with the kids! They loved writing secret messages and revealing them with the UV light. Fun, easy to use, and great for parties or gifts. Highly recommend!