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At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article. |
- "Undaunted, Hermione shoved her hand back into her bag and pulled out what appeared to be a bright red eraser."
- —Description[src]
A Revealer is a magical device used to render invisible writing visible. It has the appearance of an ordinary Muggle eraser, although it has a bright red colour.[1]
During the 1988–1989 school year, Jae Kim offered a Revealer to Jacob's sibling after they met serving detention in the Hogwarts kitchens.[2]
Hermione Granger bought a Revealer in Diagon Alley sometime in or prior to the summer of 1992. On 1 February, 1993, upon her first inspection of Tom Riddle's old school diary, she used her Revealer, along with an Aparecium spell to detect any hidden writings.[1]
Behind the scenes

A Revealer, as featured in J. K. Rowling's Official Site
- A Revealer is featured in J. K. Rowling's Official Site. It can be used to a reveal a clue to obtain extra content from J. K. Rowling. Its appearance differs slightly from its description in the book, as it is depicted as being similar to a white eraser in the website, though it is possible that there are more than one style of Revealer and it may merely be one not revealed in the books.
Appearances
- Harry Potter and the Chamber of Secrets (First appearance)
- J. K. Rowling's Official Site
- Harry Potter Trading Card Game
- Harry Potter: Hogwarts Mystery
Notes and references
- ↑ 1.0 1.1 Harry Potter and the Chamber of Secrets, Chapter 13 (The Very Secret Diary)
- ↑ Harry Potter: Hogwarts Mystery, Year 5, Chapter 3 (Detention Before Extension)