Disappearing Ink

"We apologise to our costumers for temporary closure. We are trying to locate our disappearing ink."

- Notice

Disappearing Ink is a kind of ink which disappears, probably by invisibility. Flourish and Blotts in Diagon Alley was closed in early 1992 because they tried to locate their disappearing ink.

Appearances

 * Harry Potter and the Philosopher's Stone (video game)