Angularity

# Submental Definition

The Neck & Jawline Junction

### Anatomy

The **submental region** is the area beneath the chin where the jaw meets the neck. Definition here refers to the clarity of the **submental cervical angle** formed between the neck and the underside of the chin.

### Why It Matters

Submental definition creates the **clean jaw-to-neck transition** that defines a youthful, attractive profile. A sharp submental region is one of the most sought-after features, as it creates the appearance of a **sculpted, defined jawline** even when viewed from unflattering angles. Research has established specific ideal ranges for the cervicomental (chin-to-neck) angle across different ethnicities and genders (Naini & Gill, 2008).

### What Affects Definition

 depends on **fat distribution**, **skin elasticity**, **hyoid bone position**, and **muscle tone**. This is one of the first areas to show aging and weight gain.

Key points
- 01**Submental fat** \= fat pad beneath the chin
- 02**Skin laxity** \= loose skin obscures definition
- 03**Hyoid position** \= bone position affects angle
- 04**Platysma tone** \= neck muscle tightness

### How to Assess

Key indicators when evaluating submental definition.

What to look for
- Assess **submental contour sharpness** under the chin
- Look for **depth and shadow contrast** in this region
- Note how **crisp** the shadows appear under the chin
- Check for **double chin** and **loose skin**

 Common mistakes
- 01Head extension **artificially improves** the appearance
- 02Lighting from above **hides** submental softness
- 03Don't assess **neck width or size** — focus on definition only

### Compare Levels

Tap each level to see how submental definition varies across the spectrum.

- Undefined (score 0–2): No visible angle between chin and neck. Significant fat accumulation or skin laxity creates a merged appearance.
- Soft (score 3–4): Minimal definition with a soft, rounded contour. Some distinction between jaw and neck but lacks sharpness.
- Average (score 5): Moderate definition with a visible but gentle angle. Acceptable jaw-neck transition.
- Defined (score 6–7): Clear cervico-mental angle with good separation. Attractive jaw-to-neck contour visible in profile.
- Sharp (score 8–10): Maximum definition with a crisp, acute angle. Model-tier submental region with dramatic jaw-neck contrast.

AverageScore 5

Moderate definition with a visible but gentle angle. Acceptable jaw-neck transition.

> Rating this yourself
> 
> 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.

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Source: https://www.faceiqlabs.com/support/angularity/submental_definition · FaceIQ Labs overview for AI assistants: https://www.faceiqlabs.com/llms.txt