The safe and odorless ink will disappear after you write, just wait a few seconds. To reveal the secret words, use the UV light on the pen cover. Safe and Odorless Ink: This invisible ink pen is made of durable material that is washable and good for children's health.
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The safe and odorless ink will disappear after you write, just wait a few seconds. To reveal the secret words, use the UV light on the pen cover. Safe
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【WRITE YOUR SECRET MESSAGE】Write your secret message with these magic pens for kids! Light up the built-in UV light on the pen's cover to reveal the
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