Black Fairy Dust is a magical item on ABC's Once Upon a Time. It is a dark variant of fairy dust, mined and used by the Black Fairy. Black fairy dust also has the ability to turn people into insects.
- The Black Fairy created the Dark Curse by accumulating an enormous quantity of black fairy dust.
- S1, E03: "Snow Falls" (flashback)
- S3, E22: "There's No Place Like Home"
- S6, E16: "Mother's Little Helper"