A triangle (pear-shaped) face is widest at the jaw and narrowest at the forehead — the inverse of heart. The lower third carries the visual mass. Styling inverts the heart playbook: build volume and width above, keep the jaw zone clean and vertical.
The lower face reads heavy against a light upper zone; volume at the crown and temples restores the vertical balance.
Triangle Face logic: Lift the eye upward: crown volume, temple width, full brow shaping — and styles that skim the jaw.
Myth: Triangle faces can't wear short hair.
Actually: Short styles with height on top work well — the danger zone is weight at the jaw, not length itself.
Myth: You should grow a beard to cover the jaw.
Actually: A beard adds mass to the already-widest zone. If you wear one, keep it shorter at the sides and shaped to slim, not to widen.
Volume on top with length that skims past the jaw — layers starting at cheekbone height, side parts with lift.
Top-heavy frames: browlines and aviators pull width upward; thin rimless bottoms keep the jaw zone quiet.
Both can have strong jaws, but square is wide all the way up (forehead ≈ jaw), while triangle is narrow above and wide only at the jaw.