Unicorn hair

Unicorn hair was a magical substance with a variety of uses, originating on the body of a unicorn but frequently being shedded.

Known uses

 * Unicorn tail hairs are used in potions, though their exact uses and properties are unknown . This was commented on by Harry Potter during conversation with Firenze.
 * Rubeus Hagrid found that unicorn hairs could be used to bind bandages.
 * Unicorn hair can be used in wandmaking; they produce the most consistent magic, least subject to fluctuations and blockages, most difficult to turn to the Dark Arts and the most faithful of wands . However, they do not make the most powerful of wands and are prone to melancholy if mishandled . Garrick Ollivander made wands with unicorn hairs.

Behind the scenes

 * Unicorn hair is worth ten Galleons for each hair, according to Horace Slughorn.

Appearances

 * Harry Potter and the Goblet of Fire
 * Harry Potter and the Half-Blood Prince
 * Pottermore

Notes and References
Pelo de Unicornio Crin de licorne Crine di unicorno Шерсть единорога pt-br: Pelo de Unicórnio Włos z ogona jednorożca