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Invisible Ink

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Ronald Weasley: "That's a brilliant theory, Hermione. With just one tiny little flaw. There's nothing written in his diary."
Hermione Granger: "It might be invisible ink! Aparecium!"
Hermione Granger and Ronald Weasley discuss Tom Riddle's diary[src]

Invisible Ink was a type of ink that transfigures[1] anything written in it to become invisible. Text written in invisible ink can be rendered visible again in two ways, either by using a Revealer or the spell Aparecium.

Hermione Granger thought the contents of Tom Riddle's diary might be written in invisible ink and tried "Aparecium" to reveal them, but it had no effect.[2]

Behind the scenesEdit

  • Invisible ink may actually Vanish the text written in it.


Notes and referencesEdit

  1. Harry Potter Trading Card Game - on its debut card, invisible ink appears as a transfiguration
  2. Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary)

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