Keep in mind that the bridge of the nose and the forehead are best done together, because after removal of the frontal bossing it is important that the upper nose will integrate smoothly with the new forehead.
Forehead recontouring is a procedure that involves brow shaving and surgically altering the bone.
The outer segments of the bossing that the eyebrows sit on are called the “supraorbital rims”. These are solid bone and can simply be filed down.
The section of bossing between the eyebrows (the glabella) sits over a an area called the frontal sinus. Because the frontal sinus is hollow, it is more difficult to remove bossing there. It involves removing this plate of bone, reshaping it, and placing it back in position with small titanium screws to hold the bone in place while it heals.