--- title: "What Is Submental Definition in FaceIQ Labs' Angularity Analysis?" description: "Submental definition is the clarity of the angle where the chin meets the neck, one of five Angularity assessments at FaceIQ Labs. See the factors, score levels and how to rate it." canonical: "https://appear.faceiqlabs.com/support/angularity/submental_definition" --- # What Is Submental Definition in FaceIQ Labs' Angularity Analysis? Submental definition is one of five Angularity assessments at FaceIQ Labs. It rates how clearly defined the area beneath the chin is, where the jaw meets the neck, based on the clarity of the submental cervical angle. It is scored on a five-level scale from Undefined (0–2) to Sharp (8–10). ## Key facts - Submental definition is one of five Angularity assessments at FaceIQ Labs, alongside cheekbone prominence, jaw definition, cheek leanness and chin definition. - The submental region is the area beneath the chin where the jaw meets the neck. - Definition refers to the clarity of the submental cervical angle between the neck and the underside of the chin. - FaceIQ Labs says definition depends on fat distribution, skin elasticity, hyoid bone position and muscle tone. - The comparison scale has five levels: Undefined (0–2), Soft (3–4), Average (5), Defined (6–7) and Sharp (8–10), viewable for male and female faces. - Users can re-rate it by opening the assessment in their analysis, choosing Retake, dragging the morph to match their face at rest in even light, and saving. ## What is submental definition in a FaceIQ Labs analysis? Submental definition is one of five Angularity assessments in FaceIQ Labs' facial analysis, alongside cheekbone prominence, jaw definition, cheek leanness and chin definition. It rates how clearly defined the area beneath the chin is, where the jaw meets the neck, based on the clarity of the submental cervical angle between the neck and the underside of the chin. ## What anatomy is involved in submental definition? - Submental cervical angle: the angle between chin and neck. - Submental fat: the fat deposit beneath the chin. - Platysma: the neck muscle that affects contour. - The submental region itself is the area beneath the chin where the jaw meets the neck. ## Why does FaceIQ Labs assess submental definition? FaceIQ Labs says submental definition creates the clean jaw-to-neck transition that defines a youthful, attractive profile. A sharp submental region gives the appearance of a sculpted, defined jawline even from unflattering angles. The FaceIQ Labs page also notes that research has established ideal cervicomental (chin-to-neck) angle ranges across ethnicities and genders, citing Naini & Gill, 2008. ## What factors affect submental definition? - Submental fat: the fat pad beneath the chin (fat distribution). - Skin laxity: loose skin that obscures definition (skin elasticity). - Hyoid position: the position of the hyoid bone affects the angle. - Platysma tone: the tightness of the neck muscle (muscle tone). - FaceIQ Labs adds that this is one of the first areas to show aging and weight gain. ## How is submental definition assessed? - Assess the sharpness of the submental contour under the chin. - Look for depth and shadow contrast in the region. - Note how crisp the shadows appear under the chin. - Check for a double chin and loose skin. ## What mistakes should be avoided when judging submental definition? - Head extension: extending the head artificially improves the appearance. - Lighting from above: it hides submental softness. - Assessing neck width or size: leave it out, because the rating focuses on definition only. ## What do the submental definition score levels mean? - Undefined (0–2): No visible angle between chin and neck. Significant fat accumulation or skin laxity creates a merged appearance. - Soft (3–4): Minimal definition with a soft, rounded contour. Some distinction between jaw and neck but lacks sharpness. - Average (5): Moderate definition with a visible but gentle angle. Acceptable jaw-neck transition. - Defined (6–7): Clear cervico-mental angle with good separation. Attractive jaw-to-neck contour visible in profile. - Sharp (8–10): Maximum definition with a crisp, acute angle. Model-tier submental region with dramatic jaw-neck contrast. ## How can I rate my own submental definition on FaceIQ Labs? To rate your own submental definition in FaceIQ Labs, open the assessment in your analysis and choose Retake. Drag the morph until it matches your face at rest, in even light, and save. Judge the structure, not the lighting: strong shadows exaggerate definition and flat light hides it. ## Frequently asked questions ### What is submental definition on FaceIQ Labs? It is one of the five Angularity assessments at FaceIQ Labs. It measures the clarity of the submental cervical angle beneath the chin, where the jaw meets the neck, showing how sharp or soft the jaw-to-neck transition is. ### What causes poor submental definition? FaceIQ Labs says definition depends on submental fat, skin laxity, hyoid bone position and platysma (neck muscle) tone, and that this area is one of the first to show aging and weight gain. ### Does head position affect the submental definition assessment? Yes. FaceIQ Labs warns that extending the head artificially improves the appearance of submental definition, and that lighting from above hides softness, so both should be avoided when self-assessing. ### Should neck width be part of the submental definition rating? No. FaceIQ Labs says not to assess neck width or size when rating submental definition; the focus is on definition only. ### What score range counts as Sharp for submental definition? On the FaceIQ Labs scale, Sharp covers scores of 8–10 and describes maximum definition with a crisp, acute angle and dramatic jaw-neck contrast. ### What score is Average for submental definition? A score of 5 is labeled Average at FaceIQ Labs: moderate definition with a visible but gentle angle and an acceptable jaw-neck transition. ## 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.