Canthion

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Insights

Every measurement, explained.
Every method, stated.

One page per proportion — the diagram, the formula, reference values by population, how it is scored — and one per bone-level measurement, showing how a photograph gives its equivalent.

Measurements we report 18

Tier A · tight intervalIntercanthal distance : palpebral fissure lengthEyes

Tier A · tight intervalAlar base width : intercanthal distanceNose

Tier A · tight intervalMouth width : alar base widthLips

Tier A · tight intervalUpper : lower vermilion heightLips

Tier A · tight intervalPhiltrum length : chin heightLower face

Tier A · tight intervalPalpebral fissure height : lengthEyes

Tier A · tight intervalMorphological face height : bizygomatic widthWhole face

Tier A · tight intervalBizygomatic width : physiognomic face heightWhole face

Tier A · tight intervalFacial thirdsWhole face

Tier A · tight intervalFacial fifthsWhole face

Tier A · tight intervalOral commissure tiltLips

Tier B · wide intervalCanthal tiltEyes

Tier B · wide intervalBrow apex positionEyes

Tier B · wide intervalBigonial : bizygomatic widthJaw

Tier B · wide intervalNasal indexNose

Tier B · wide intervalBilateral asymmetry indexWhole face

Tier B · wide intervalEye–mouth distance : face length (Pallett)Whole face

Tier B · wide intervalInterpupillary distance : face width (Pallett)Eyes

Skin analysis 6

Skin · lighting-dependentRedness (a* proxy)Skin

Skin · lighting-dependentUnder-eye darkness (ΔL*)Skin

Skin · lighting-dependentLocal texture (pore / fine-line proxy)Skin

Skin · lighting-dependentDiscrete red/dark spots (count by region)Skin

Skin · lighting-dependentTone uniformity across regionsSkin

Skin · lighting-dependentSpecular highlight fraction (T-zone)Skin

Bone-level measurements, and how a photo gives them 11

bonyGonial angleJaw taper (soft-tissue angle from the jaw angle to the chin, levelled to your pupils) and jaw definition (the shadow step across the jaw line) from your…How it is measured →

bonyRamus : mandibular body ratioJaw taper and jaw:cheek width.How it is measured →

lateralNasofacial angle, and any profile angle taken against a planeThe angles that a silhouette genuinely contains, each traced off your own outline and drawn on your photograph: the nasal root, the nose-to-lip corner…How it is measured →

lateralRicketts E-line, Steiner S-line, Holdaway H-lineChin–lip direction from your profile: a direction and a share of the nose-tip→chin distance, with its ±.How it is measured →

bonyOrbital vector / infraorbital rim positionUnder-eye darkness (ΔL*), eye openness and canthal tilt — the parts of the orbit a photo can read — scored and placed on the masculinity axis.How it is measured →

inventedOgee curve scoreCheek shading in the ¾ view (light on the cheekbone vs a flat mid-cheek) and midface width — the visible part of the curve.How it is measured →

refutedGolden ratio / Marquardt Phi mask fitThe measured optima instead of 1.618: Pallett's ratios (0.36 vertical, 0.46 horizontal), which are the values raters actually preferred — scored like ev…How it is measured →

refutedFacial width-to-height ratio (fWHR)Width:height with your hairline placed (auto-detected or from your hair-back photo), scored, plus a masculinity axis built from the traits that genuinel…How it is measured →

lateralChin projection vs a bony reference plane (zero meridian, etc.)Chin–lip direction from the profile and chin share of the lower face from the front, with the masculinity read on the chin and the beard call that follows.How it is measured →

uncalibratedFitzpatrick type / Individual Typology Angle from RGBSkin depth (L*), undertone, chroma and colour season from a white-balanced sample — described and used for your palette, not forced into a phototype.How it is measured →

scaleAny absolute measurement in millimetresEverything as ratios of your own features (iris width, inter-pupil distance, face height) — the only scale a single photo supports — and a score out of…How it is measured →

The questions people arrive with

Answered in full, free, with the measurement, the norms it is compared against and the source. Nothing here needs a photo or an account.

Canthal tilt: what it is and how it is measured Facial thirds: are yours equal? Face width to height ratio, explained Eye spacing: how far apart should eyes be? Nasal index: nose width to height Jaw width (bigonial to bizygomatic) Facial asymmetry: how much is normal? Orbital vector: positive, negative, and what a photo shows Gonial angle: can a photo measure it? Golden ratio face: does it hold up? fWHR (facial width-to-height ratio): is it real? Chin projection: what a photo cannot measure

Where to start

The pages below take these measurements on your own photograph, or answer the question people most often arrive at this library with.

Attractiveness testWhat a score of 60, 70 or 80 is built from.

Face shapeThe seven classes, defined by the five measurements behind them.

Facial symmetry testThe 3.2 ± 1.2 norm, and the detector's noise floor beside it.

The golden ratio face testWhat share of each measured population follows the canons.

Masculine and feminine featuresFourteen traits with a published sex difference, by effect size.

Looksmaxxing, measuredThe forum vocabulary, mapped onto what can be measured.

How Canthion comparesAgainst Qoves, Umax, LooksMax AI and Mogged.

MethodologyEvery formula, every norm source, every error bar.

GlossaryEvery term on this site, defined plainly.