Abstract: A foldable head restraint assembly, including: a bracket assembly adapted for fixed disposition in a seat back; a head restraint support for mounting a bun assembly above the seat back, the head restraint support pivotally mounted to the bracket assembly so as to be pivotally movable relative to the bracket assembly in at least first and second directions between upright and folded positions; at least one biasing element biasing the head restraint support into one of the upright and folded positions; and at least one rotary damper which retards the motion of the head restraint support during at least a portion of the head restraint support's pivotal movement in at least one of the first and second directions.