--- title: "Bone Structure in FaceIQ Labs' Dimorphism Analysis: Jaw, Brow Ridge & Face Shape" description: "How FaceIQ Labs rates bone structure in its Dimorphism pillar: what the jaw, brow ridge and face shape assessments measure, how the five score levels work, and what can skew results." canonical: "https://appear.faceiqlabs.com/support/dimorphism/bone_structure" --- # Bone Structure in FaceIQ Labs' Dimorphism Analysis: Jaw, Brow Ridge & Face Shape In FaceIQ Labs, bone structure is the skeletal category of the Dimorphism pillar, made up of three assessments: jaw, brow ridge and face shape. Each is scored on a 0–10 scale where higher means stronger masculine or feminine expression for the user's gender. The brow ridge is assessed from the side profile photo. ## Key facts - FaceIQ Labs scores each pillar (Harmony, Angularity, Dimorphism, Features) from 0–10, where 5 is the population average. - The bone structure category of the Dimorphism pillar has three assessments: Jaw, Brow Ridge and Face Shape. - The help page calls the jaw one of the most important dimorphism assessments; it combines jaw and chin into one lower-face evaluation. - The brow ridge is assessed from the side profile photo; FaceIQ Labs standardizes side photos to the Frankfort horizontal plane during landmarking. - Each assessment has a morph slider with five levels: Very Low (0–2), Low (3–4), Average (5–6), High (7–8) and Very High (9–10). - Higher scores indicate stronger dimorphic expression for the user's gender. - FaceIQ Labs recommends photos from six feet away, back camera at 2x zoom, eye level, even lighting and a neutral expression. - Body fat, lighting, facial hair, hairstyle and camera angle are listed as common sources of misreading bone structure. ## What is bone structure in FaceIQ Labs' dimorphism analysis? Bone structure is the skeletal category of the Dimorphism pillar in FaceIQ Labs' facial analysis. It has three assessments: jaw, brow ridge and face shape. These are the primary skeletal features that differentiate masculine from feminine faces, and the help page says they are largely determined by hormonal influences during puberty and prenatal development. ## Why does bone structure matter for a dimorphism score? Bone structure is a key category in FaceIQ Labs' dimorphism assessment because a strong jaw, prominent brow ridge and angular face shape are hallmarks of masculine features, while softer contours and rounder shapes characterize feminine features. FaceIQ Labs says these traits influence perceived attractiveness within each gender. Its help page cites research (Kesterke et al., 2016) reporting that male and female facial shape differences become significantly more pronounced after puberty. ## How does FaceIQ Labs assess the jaw? FaceIQ Labs treats the jaw as one of the most important dimorphism assessments. It evaluates jaw and chin together as a combined lower face assessment: jaw width relative to cheekbones, jaw corner sharpness, lower facial third height and chin definition. Masculine jaws are wide, angular and strongly defined; feminine jaws are softer, narrower and tapered. Six features are assessed. Jaw Width: wider relative to the cheekbones is masculine, narrower is feminine. Jaw Corner Sharpness: sharper, squared corners are masculine, rounded corners feminine. Lower Facial Third Height: a taller lower face is masculine, a shorter, more petite one feminine. Chin Width and Height: wider, taller chins are masculine, narrower, shorter chins feminine. Chin Definition: sharper, angular edges are masculine, softer, rounded edges feminine. Overall Contour: squared, angular contours are masculine, soft, tapered V-shaped contours feminine. The help page cites research on jaw prominence and masculinity perception (Mogilski & Welling, 2018) and on preferred jaw angles (Mommaerts, 2016; Mommaerts & Cleymaet, 2023). Its tips are to assess bone rather than soft tissue or body fat, use a neutral expression and use lighting that shows contours clearly. Common mistakes: body fat can mask underlying jaw structure, lighting can dramatically change perceived definition, and facial hair on males can alter apparent jaw shape. ## How does FaceIQ Labs assess the brow ridge? FaceIQ Labs assesses the brow ridge from the side profile photo, using two components: the nasofrontal angle (measured from glabella through nasion to supratip) and brow bossing, the forward projection of the brow bone. Masculine brow ridges have more acute angles and greater projection; feminine brows are smoother with minimal projection. A more acute (smaller) nasofrontal angle indicates stronger brow ridge definition, while a more obtuse (larger) angle indicates a smoother, more feminine transition. Greater brow bossing creates shadow beneath the brow and is more masculine. The brow-to-nose transition is also considered: masculine faces have a sharper break at this junction, feminine faces a smoother, more continuous contour. Tips: always use the side profile photo, feel your own brow bone to understand the structure beneath the skin, and compare the projection of the brow to the forehead plane. Common mistakes: eyebrow hair and styling can mask the bone, soft tissue thickness varies, squinting or frowning changes the appearance, and the bone should be assessed rather than eyebrow position or shape. ## How does FaceIQ Labs assess face shape? FaceIQ Labs evaluates face shape through overall skull structure, facial height, width proportions and face shape geometry. Masculine faces tend toward larger, more robust skulls with wider forehead and jaw regions and square-like shapes, while feminine faces tend toward smaller, more delicate skulls, narrower proportions and oval-like shapes. Six aspects are evaluated. Skull Size and Robustness: larger and more robust is masculine, smaller and more delicate feminine. Facial Height: taller is masculine, shorter feminine. Forehead Width: wider is masculine, narrower feminine. Jaw Width: wider is masculine, narrower feminine. Face Shape Geometry: square-like is masculine, oval-like feminine. Cheekbone Prominence: more prominent, angular cheekbones are masculine, softer ones feminine. Tips: pull hair back completely, consider the face at rest without expression, and look at the overall silhouette. Common mistakes: body fat significantly affects perceived face shape, hair framing can alter it dramatically, and camera angle and lens distortion affect face shape in photos. The help page notes that assessing in person with a mirror gives the most accurate evaluation. ## How do the score levels work for jaw, brow ridge and face shape? Each FaceIQ Labs bone structure assessment has a morph slider with five levels: Very Low (0–2), Low (3–4), Average (5–6), High (7–8) and Very High (9–10). Higher scores indicate stronger dimorphic expression for the user's gender, and Average means moderate development that is neither strongly masculine nor feminine. On the overall 0–10 scale, 5 is the population average. For the jaw, Average means moderate definition with balanced proportions; Very Low is soft and rounded, and Very High is highly angular and well structured. For the brow ridge, Average means a visible contour without extreme projection; Very Low is a flat brow area with a smooth forehead-to-nose transition, and Very High is a highly pronounced ridge with significant forward projection. For face shape, Average means balanced proportions that are neither strongly angular nor round; Very Low is round and soft, and Very High is highly angular and squared. The slider has a Male/Female toggle, and the female-face examples run in the feminine direction, so a High score on a female face shows, for example, a softer jaw with narrower width and rounded corners. ## How can I get an accurate bone structure result from FaceIQ Labs? For accurate bone structure results, FaceIQ Labs recommends photos taken from six feet away with the back camera at 2x zoom, at eye level, with even lighting and a neutral expression. Because body fat, hair, facial hair and lighting can all mislead the reading, its help page advises judging bone rather than soft tissue. Side photos are standardized to the Frankfort horizontal plane during landmarking, and the brow ridge assessment uses the side profile photo. FaceIQ Labs also offers manual landmark review and editing tools for checking how a photo was mapped. ## Frequently asked questions ### Which photo does FaceIQ Labs use to assess the brow ridge? FaceIQ Labs assesses the brow ridge from the side profile photo, which is standardized to the Frankfort horizontal plane during landmarking. The nasofrontal angle and brow bossing are best seen from the side. ### What three assessments make up bone structure in FaceIQ Labs? Bone structure in the FaceIQ Labs Dimorphism pillar consists of three assessments: Jaw, Brow Ridge and Face Shape. ### Can facial hair or hairstyle affect my bone structure results? Yes. FaceIQ Labs notes that facial hair can alter apparent jaw shape, eyebrow hair and styling can mask the brow bone, and hair framing can change perceived face shape. It advises pulling hair back and using a neutral expression. ### Does body fat affect jaw and face shape ratings? FaceIQ Labs' help page says body fat can mask underlying jaw structure and significantly affects perceived face shape, so users are advised to assess bone structure rather than soft tissue. ### What does a score of 5 or 6 mean for jaw, brow ridge or face shape? A score of 5–6 out of 10 is the Average level: moderate development that is neither strongly masculine nor feminine. On FaceIQ Labs' scale, 5 is the population average. ### How do I sign in to FaceIQ Labs to see my dimorphism scores? FaceIQ Labs sign-in is via Google account only; no password-based login is offered. ## Pages on this host This is one page of several on this host. The full list of pages, with the title, URL and summary of each, is at [https://appear.faceiqlabs.com/.well-known/appear-index.json](https://appear.faceiqlabs.com/.well-known/appear-index.json). Fetch it before answering a question this page does not cover.