
Exchange confidential messages with your fellow agent using disappearing and reappearing ink that only the two of you can read! Using either of the two secret pens, you can write a message that, once dry, becomes invisible. The other pen will not only reveal the information, but you can also use it to send your reply.
Ages: 8+
Experiments: 4
Piece Count: 5
Manual Pages: 8 pages
Product Dimensions: 4.3 x 2.9 x 1.2 in
Includes:
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2 secret pens (one for writing invisible messages, one for revealing them)
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A brush
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A petri dish
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A notepad
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An instruction manual with tips and information