House of Marble I-Spy Invisible Ink UV Pen This clever spy pen lets you write secret messages only revealed by the built in U.V. light! Perfect for any budding spy. Pen height: 13cm / 5 inches.
This clever spy pen lets you write secret messages only revealed by the built in U.V. light! Perfect for any budding spy. Pen height: 13cm / 5 inches.
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The ink is invisible after you write with it,Turn on the purple light on the lid to illuminate the writing area so you can see the secret message
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Write Your Secret Message: This magical invisible ink pen will write your secret message. Once your secret message has been written with this
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