Table 1. Ousterhout description of the four types of foreheads and approaches to feminization of these foreheads.

Type description	Management
Type I: absent frontal sinus or sufficient bone over sinus (3–5%)	Burring
Type II: Brow bossing at appropriate level, insufficient projection superior to bossing (3–5%)	Fill with methylmethacrylate vs. hydroxyapatite
Type III: Prominent bossing, presence of frontal sinus (90%)	Frontal sinus setback
Type IV: Forehead small, under projected brow ridge (rare)	Pan forehead augmentation