Facial Aesthetics Glossary
Plain-English definitions of every term in our AI face analysis. Each entry covers what the term means, why it matters, and how AI measures it.
Canthal Tilt
Canthal tilt is the angle between the inner and outer corners of the eye, measured against a horizontal baseline.
Read definition →Positive Canthal Tilt
A positive canthal tilt means the outer corner of the eye sits higher than the inner corner.
Read definition →Negative Canthal Tilt
A negative canthal tilt means the outer corner of the eye sits lower than the inner corner.
Read definition →Hunter Eyes
Hunter eyes are eyes with positive canthal tilt, low scleral show, and a forward-projecting brow ridge — the looksmaxxing community ideal.
Read definition →Facial Width-to-Height Ratio (FWHR)
FWHR is the bizygomatic width of the face divided by the upper face height — a measure of facial squareness linked to dominance perception.
Read definition →Golden Ratio (Phi) in Faces
The golden ratio (φ ≈ 1.618) is a mathematical proportion sometimes used to evaluate facial harmony, popularized by Stephen Marquardt.
Read definition →Ogee Curve
The ogee curve is the S-shaped contour running from the temple, along the cheekbone, into the cheek hollow — a key marker of midface aesthetics.
Read definition →Gonial Angle (Jaw Angle)
The gonial angle is the angle at the corner of the jaw, where the vertical ramus meets the horizontal mandibular body — measured in degrees.
Read definition →Mandibular Plane
The mandibular plane is a horizontal reference line along the lower border of the jaw, used to evaluate facial vertical proportions.
Read definition →Midface Ratio
The midface ratio compares the vertical height of the midface (brow to upper lip) to other facial thirds — a marker of facial proportion balance.
Read definition →Philtrum
The philtrum is the vertical groove between the nose and the upper lip — its length and shape are key facial proportion markers.
Read definition →Cupid's Bow
The cupid's bow is the M-shaped curve at the top of the upper lip — its definition and width are key markers of lip aesthetics.
Read definition →Malar Projection
Malar projection is how far the cheekbone extends forward from the face plane — a primary marker of cheekbone definition.
Read definition →Zygomatic Arch
The zygomatic arch is the bony bridge running from the cheekbone to the temple — its width and prominence drive face shape.
Read definition →Infraorbital Rim
The infraorbital rim is the bony lower edge of the eye socket — its forward projection determines under-eye support and tear trough depth.
Read definition →Brow Ridge / Supraorbital Ridge
The brow ridge (supraorbital ridge) is the bony prominence above the eye sockets — strongly sexually dimorphic and a key masculinity marker.
Read definition →Nasolabial Angle
The nasolabial angle is the angle between the columella of the nose and the upper lip — a key marker of nose tip rotation.
Read definition →Upper-to-Lower Lip Ratio
The lip ratio is the height of the upper lip vermillion compared to the lower lip — a key proportion in lip aesthetics.
Read definition →Rule of Facial Thirds
The rule of facial thirds divides the face vertically into three equal regions — forehead, midface, and lower face — with equal heights signaling balance.
Read definition →Neoclassical Facial Canons
The neoclassical canons are a set of nine ideal facial proportions formalized in 18th-century European art — used today as a baseline for aesthetic evaluation.
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