"That's the Great Fairy's Mask, isn't it? That is quite rare. Normally, you wouldn't be able to get one of those."
Happy Mask Salesman

The Great Fairy's Mask (大妖精のお面, Daiyousei no Omen?) is one of twenty four collectible masks in The Legend of Zelda: Majora's Mask. It resembles the face of the Great Fairy of Power.

Obtaining the Mask

Spoiler warning: Plot or ending details follow.

The Great Fairy's Mask is obtained if Link re-visits the Great Fairy of Magic in Clock Town after Link regains his Hylian form. The Great Fairy gives the mask to Link if he brings the Stray Fairy in Clock Town to her cave, so that she can be complete again.

When worn, it attracts Stray Fairies. Whenever it is used in a dungeon, the mask emits a light corresponding to the color of the Stray Fairies in the dungeon in which Link is if a fairy is in the room, and the hair will point to it if it is encased within something. The Great Fairy's Mask automatically guides Stray Fairies to Link unless they are trapped inside a chest or bubble. When the mask does not emit colored light, that means that there are no Fairies left in that particular room.

Majora's Mask 3D

In the 3DS remake, it is also used to attract Fairy Fish while fishing at the Ocean Fishing Hole.

Spoiler warning: Spoilers end here.