To lay the respective tip parts of an upper nipping body and a lower nipping body into the closed state with a simple operation to prevent the hair nipped between the upper nipping body and the lower nipping body from being slipped out.

This hair clip is formed of an upper nipping body 1 and a lower nipping body 2, at least one of the upper nipping body 1 and the lower nipping body 2 is formed of an elastic body, an elastically restorable curved part 1a is formed on one end part of the upper nipping body 1, and the curved part 1a is arranged extending from the tip part of the lower nipping body 2 to both sides, so that the inner circumference (r) of the curved part 1a of the upper nipping part 1 is protruded from the tip part 2a of the lower nipping part 2 in the state where the upper nipping body 1 is pressed from the outside to the inside, and, further, the inner circumference (r) of the curved part 1a of the upper nipping body 1 is never protruded from the tip part 2a of the lower nipping body 2 in the state where the upper nipping body 1 is not pressed from the outside to the inside.