Dragon blood

The has twelve uses, all discovered by the famous Hogwarts&#160;headmaster&#160;Albus Dumbledore.

Uses

 * In 1995, Rubeus Hagrid&#160;used dragon blood to help with his injuries after being attacked by giants.
 * The very&#160;next year, Horace Slughorn&#160;used dragon blood to escape from Albus Dumbledore and Harry Potter, pretending to have been attacked by Death Eaters.

Behind the Scenes

 * There's a contradiction in the Harry Potter series&#160;to the color of dragon blood. In the Order of the Phoenix book&#160;and film, dragon blood appears to be green, but then in the Half-Blood Prince book&#160;and film, dragon blood&#160;appears to be scarlet.

Appearances

 * Harry Potter and the Philosopher's Stone&#160;(first mention)
 * Harry Potter and the Philosopher's Stone (film)&#160;(omitted)
 * Harry Potter and the Order of the Phoenix&#160;(first appearance)
 * Harry Potter and the Order of the Phoenix (film)
 * Harry Potter and the Half-Blood Prince
 * Harry Potter and the Half-Blood Prince (film)