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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 discussing T. M. Riddle's Diary[src]

Invisible Ink was a type of magical ink that transfigured[2] anything written in it to become invisible. Text written in invisible ink could be rendered visible again in two ways, either by using a Revealer, or the charm Aparecium.[1]

History[]

Hermione Granger thought the contents of T. M. Riddle's Diary might be written in invisible ink and tried Aparecium to reveal them, but it had no effect.[1]

Behind the scenes[]

  • With it being a form of transfiguration, invisible ink may have actually Vanished the text written in it.

Appearances[]

Notes and references[]

  1. 1.0 1.1 1.2 Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary)
  2. Harry Potter Trading Card Game - on its debut card, Invisible Ink appears as a transfiguration.
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