This next generation putty does more than just copy newspaper comics! Colored versions are not only vibrant, but also iridescent, glow in the dark, magnetic, and more! Tear it, bounce it, twist it, and mold it in your hands. Never dries out!
Often used to encode top-secret information, invisible ink has a long and interesting history dating back to 4th century BC. There are all kinds of ways to make and read invisible ink (like heat and lemon juice), but our Invisible Ink Thinking Putty® uses ultraviolet light to mimic blue ink on a sheet of green paper. Write with the Glow Charger and watch with wonder as your words evaporate into thin air.
Recommended by counselors and teachers as a way to concentrate, destress, calm down, and get homework done.
Made with non-toxic silicone. Proudly made in the USA!
Large size circular tin includes 3.2 oz. of Thinking Putty.