How Does FaceIQ Labs Assess Lips and Neck for Facial Dimorphism?

Key facts

• Lips & Neck belongs to FaceIQ Labs' Dimorphism pillar, one of four pillars (Harmony, Angularity, Dimorphism, Features) scored 0–10 from uploaded photos.
• Fuller lips are a feminine trait; thinner, less pronounced lips are masculine.
• Lip fullness is measured as vertical lip thickness as a percentage of lower face height.
• A wider, thicker neck is a masculine trait; a slender neck is a feminine trait.
• Neck width is measured as a percentage of jaw width.
• Scoring direction depends on the user's gender.
• Score levels run from Very Low (0–2) through Low (3–4), Average (5–6) and High (7–8) to Very High (9–10).
• An Average score of 5–6 means moderate lip fullness or moderate neck width with balanced proportions.
• Estrogen promotes fuller lips and softer neck contours; testosterone promotes thinner lips and increased neck musculature.
• Fillers, makeup, dehydration, aging, expressions, body composition, athletic training, posture and clothing can distort the assessment.

What is the Lips & Neck assessment in FaceIQ Labs?

FaceIQ Labs' Lips & Neck assessment is part of its Dimorphism pillar, one of four pillars (Harmony, Angularity, Dimorphism, Features) scored 0–10 from uploaded photos. It evaluates two soft-tissue traits: lip fullness, where fuller lips are feminine, and neck width, where a wider, thicker neck is masculine. Scoring direction depends on the user's gender.

Why do lips and neck matter for dimorphism scoring?

FaceIQ Labs treats lips and neck as soft-tissue dimorphism influenced by hormones, a subtle but meaningful part of its Dimorphism pillar. Estrogen promotes fuller lips and softer neck contours, while testosterone promotes thinner lips and increased neck musculature. These features complement the bone structure assessments. The page also cites research (Heidekrueger et al., 2017) that most people worldwide prefer equal-sized upper and lower lips, a 1:1 ratio, though preferences vary somewhat by culture and gender.

How does FaceIQ Labs measure lip fullness?

FaceIQ Labs measures lip fullness as vertical lip thickness expressed as a percentage of lower face height. Fuller, more voluminous lips are treated as a feminine trait and thinner, less pronounced lips as masculine. The assessment looks at overall fullness, upper and lower lip proportions, and overall lip volume relative to the face. Lips are best assessed in a relaxed, neutral expression, viewed from the front and in profile, with the upper and lower lip considered together.

What do the lip fullness score levels mean?

FaceIQ Labs scores lip fullness on five levels from Very Low (0–2) to Very High (9–10), and the direction depends on gender. For males, fuller lips score lower and thinner lips higher; for females, fuller lips score higher. An Average score of 5–6 means moderate lip fullness with balanced proportions for either gender. For males: Very Low (0–2) is very full, voluminous lips, a strongly feminine presentation; Low (3–4) is above average fullness, feminine-leaning; High (7–8) is below average fullness, masculine-leaning; Very High (9–10) is very thin lips with minimal volume, a strong masculine presentation. For females: Very Low (0–2) is very thin lips lacking feminine fullness; Low (3–4) is below average fullness, masculine-leaning; High (7–8) is above average fullness with good feminine prominence; Very High (9–10) is very full, voluminous lips with excellent feminine fullness and prominence.

How does FaceIQ Labs measure neck width?

FaceIQ Labs measures neck width as a percentage of jaw width within its Dimorphism pillar. A wider, thicker neck approaching or exceeding jaw width is masculine, while a slender neck well below jaw width is feminine. The assessment also considers overall thickness and the balance between neck and jaw proportions, judged relative to head and jaw size. The page cites research (Caton & Lewis, 2021) suggesting men with thicker necks are perceived as more dominant and better fighters, and that women also consider the trait attractive.

What do the neck width score levels mean?

FaceIQ Labs scores neck width on five levels, from Very Low (0–2) to Very High (9–10), based on how well the neck expresses gender-typical characteristics. Males score higher for thicker necks and females for slender ones. An Average score of 5–6 means moderate neck width with balanced proportions for the user's gender. Very High (9–10): for males, a very thick, powerful neck approaching or exceeding jaw width; for females, a very slender, elegant neck well below jaw width. High (7–8): for males, a thick neck with good masculine definition; for females, a thin neck with good feminine elegance. Low (3–4): for males, a thinner neck below masculine ideals; for females, a thicker neck reducing feminine appeal. Very Low (0–2): neck width strongly opposite to gender-typical characteristics.

What can distort a Lips & Neck assessment?

Several factors can distort FaceIQ Labs' Lips & Neck assessment. For lips: fillers and cosmetic procedures, makeup such as lipstick and lip liner, dehydration, aging, and expressions such as smiling or pursing. For the neck: body composition (fat versus muscle), athletic training, posture, and clothing such as collars or necklines. Athletic training can increase neck musculature significantly.

What research does the FaceIQ Labs Lips & Neck page cite?

The FaceIQ Labs Lips & Neck page cites four studies: Heidekrueger et al. (2017) on worldwide preference for equal upper and lower lips, Hernandez et al. (2023) on fillers, Penna et al. (2015) on mathematical lip ratios, and Caton & Lewis (2021) on neck thickness in men. Hernandez et al. is described as finding that fillers increase attractiveness in thin-lipped individuals but can reduce it in those with already full lips. Penna et al. is described as identifying specific mathematical ratios that contribute most to the perception of attractive lips.

Frequently asked questions

Are fuller lips masculine or feminine in FaceIQ Labs' analysis?

FaceIQ Labs treats fuller, more voluminous lips as a feminine trait and thinner, less pronounced lips as masculine. Lip fullness is measured as vertical lip thickness relative to lower face height.

Is a thicker neck masculine or feminine in FaceIQ Labs' analysis?

A wider, thicker neck is a masculine trait in FaceIQ Labs' Dimorphism pillar, while a slender, elegant neck is feminine. Neck width is measured as a percentage of jaw width.

What upper-to-lower lip ratio do most people prefer?

FaceIQ Labs references research (Heidekrueger et al., 2017) showing most people worldwide prefer equal-sized upper and lower lips, a 1:1 ratio, though preferences vary somewhat by culture and gender.

Does the scoring direction differ by gender?

Yes. FaceIQ Labs states that scoring direction for lip fullness depends on gender, and neck width is scored by how well it expresses gender-typical characteristics, so males and females are rated in opposite directions.

What does an Average score of 5–6 mean for lips and neck?

For lips it means moderate fullness with balanced proportions. For the neck it means moderate width with balanced proportions for the user's gender.

Can lip fillers or makeup affect the lip assessment?

Yes. FaceIQ Labs lists fillers, cosmetic procedures, lipstick or lip liner, dehydration, aging, and expressions such as smiling or pursing as factors that change how lips appear and can distort the assessment.

What can distort the neck width assessment?

Body composition (fat versus muscle), athletic training, posture, and clothing such as collars or necklines can change perceived neck thickness or obscure an accurate reading.

Which FaceIQ Labs pillar includes Lips & Neck?

The Dimorphism pillar, which is one of four pillars (Harmony, Angularity, Dimorphism, Features) scored 0–10 from uploaded photos.