What Is Lip Thickness in FaceIQ Labs' Harmony Analysis?
FaceIQ Labs defines Lip Thickness as cupid's-bow-to-lower-lip height divided by nasal-base-to-chin height, times 100. It is a front-view, mouth-region supporting Harmony measurement that currently has no weight in the Harmony score and is hidden in standard results.
Key facts
- Formula: cupid's-bow-to-lower-lip height ÷ nasal-base-to-chin height × 100
- Categorized as Harmony · Front view · Mouth in FaceIQ Labs' measurement guides
- Supporting measurement with no weight in the Harmony score; hidden in standard results
- Worked example: a 16-unit lip span in a 64-unit lower face gives 25%
- The example does not specify the upper-to-lower lip split and is not a target range
- FaceIQ Labs uses a vertical photo ratio, which differs from studies measuring tissue thickness or three-dimensional lip volume
- Lip Thickness is not lip height divided by mouth width
- Cited research: Gibelli et al., 2015, which describes lip morphology and does not establish a universally attractive lip ratio
How does FaceIQ Labs calculate Lip Thickness?
FaceIQ Labs calculates Lip Thickness by dividing the combined lip height, measured from the cupid's bow to the lower lip, by the lower-face height, measured from the nasal base to the chin, then multiplying by 100 to give a percentage. It is a front-view measurement categorized under the mouth in the Harmony guides.
Why does FaceIQ Labs measure Lip Thickness?
- FaceIQ Labs uses Lip Thickness to describe how much of the lower face is occupied by the visible lip region.
- Because it is a relative measure, a taller lower face can reduce the percentage even when the lips themselves are unchanged.
- Lower percentage: less lip height relative to the lower face.
- Higher percentage: more lip height relative to the lower face.
Does Lip Thickness affect my FaceIQ Labs Harmony score?
No. FaceIQ Labs describes Lip Thickness as a supporting measurement that currently has no weight in the Harmony score. It is also hidden in standard results, so it does not appear in a typical FaceIQ Labs analysis output.
What does a worked example of Lip Thickness look like?
In FaceIQ Labs' worked example, a 16-unit lip span in a 64-unit lower face gives a Lip Thickness of 25%. The example only explains the calculation. It is not a target range, is not a measurement of the guide's schematic, and does not specify how the span splits between upper and lower lip.
Where does FaceIQ Labs' Lip Thickness measurement come from?
- FaceIQ Labs' Lip Thickness is a FaceIQ adaptation of lip dimensions studied in facial anthropometry. It uses a vertical photo ratio, which differs from studies that measure tissue thickness or three-dimensional lip volume.
- The guide cites Gibelli et al., 2015, 'A Quantitative Analysis of Lip Aesthetics: The Influence of Gender and Aging', which measured lip area, volume and thickness across sex and age groups.
- That research describes lip morphology and does not establish a universally attractive lower-to-upper lip ratio.
- FaceIQ Labs' score weights and reference ranges are model settings; the cited papers do not collectively validate the scoring system.
Is Lip Thickness the same as lip height divided by mouth width?
No. FaceIQ Labs states that Lip Thickness is not lip height divided by mouth width. It compares combined vertical lip height with lower-face height, measured from the nasal base to the chin, so it should not be confused with a width-based mouth ratio.
Which other FaceIQ Labs Harmony measurements are in the same mouth region?
- Lower Lip to Upper Lip Ratio
- Cupid's Bow Depth
- Mouth-to-Nose Width Ratio
- Interpupillary-Mouth Width Ratio
- Mouth Corner Position
- Chin-to-Philtrum Ratio
Frequently asked questions
What is the Lip Thickness measurement in FaceIQ Labs?
It is the combined vertical height of the lips, from the cupid's bow to the lower lip, as a percentage of lower face height (nasal base to chin): lip height ÷ lower-face height × 100.
Does Lip Thickness count toward my Harmony score on FaceIQ Labs?
No. FaceIQ Labs says Lip Thickness currently has no weight in the Harmony score and is hidden in standard results.
Is FaceIQ Labs' Lip Thickness the same as scientific lip thickness studies?
No. FaceIQ Labs uses a vertical photo ratio, while studies such as Gibelli et al. (2015) measured lip area, volume and tissue thickness.
What does a Lip Thickness of 25% mean in FaceIQ Labs' example?
In the example, a 16-unit lip span in a 64-unit lower face gives 25%. It only illustrates the calculation, is not a target range, and does not show how the span divides between upper and lower lip.