Headrest for motor vehicle seats

The present invention is related to a headrest for motor vehicle seats comprising a fixed part (2), a moving part (3) movable with respect to said fixed part (2) from a rest position to an active position, connection means (4) connecting said fixed part (2) and said moving part (3) to determine the path and the position of the moving part (3), and a drive system comprising a drive device (5) for driving and moving the moving part (3) with respect to the fixed part (2) in the event of a crash. The headrest (1) comprises damping means (8) allowing the movement of at least one portion of the moving part (3) to a forward position with respect to the active position and allowing the backward movement to the active position after the impact of the user's head, absorbing energy in said backward movement.