Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection
Aaron's Thinking Putty Large - Ghostwriters Collection

Aaron's Thinking Putty Large - Ghostwriters Collection

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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 ink on a sheet of paper. Write with the Glow Charger® and watch with wonder as your words evaporate into thin air.