Invisible Ink Ghostwriters Thinking Putty

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.

Warning: UV emitted from this product. Avoid direct eye or skin contact with light. DO NOT aim light at people or pets.

• Includes 1/5 lb. (3.2 oz) of Genuine Crazy Aaron’s Thinking Putty
•  Collection: GHOSTWRITERS™
• Includes Glow Charger®
• Texture: Soft
• Made in the USA from nontoxic silicone and never dries out
• Stretch it, bounce it, pop it, tear it, and sculpt it!
• Fun for ages 8+
• Thinking Putty is manufactured with the help of exceptional individuals challenged with disabilities