Revealer
Object information
Usage	Rendering invisible ink visible
Owners	Hermione Granger

[Source]

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]

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 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

Notes and references