Ratio, fullness, cupid bow, commissure angle. Four axes scored against published cosmetic-research norms.
The 1:1.5 to 1:2 upper-to-lower ratio is the published reference range. The analysis returns where your lips sit on each axis with percentile against the norm.
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Upper-to-lower lip ratio. Upper vermilion height divided by lower vermilion height. The published reference band sits at 1:1.5 to 1:2; ratios outside the band shift the read toward top-heavy or bottom-heavy.
Total fullness index. Combined vermilion area normalized by lower-face area. Higher index reads as fuller; lower index reads as thinner. Fullness interacts with sex dimorphism in how it is rated.
Cupid bow definition. The depth and sharpness of the central upper-lip peak relative to lip width. Strong definition reads as heart-shaped; soft definition reads as straight or wide.
Oral commissure angle. The resting angle at the corners of the mouth. Positive (upturned) reads as approachable; negative (downturned) reads as serious. This is the most habit-modifiable input over a 30 to 60 day window.
Ratio in the 1:1.5 to 1:2 band, fullness above the population median, neutral commissure. The reference shape. Most consistently rated as attractive across raters.
Ratio in the reference band, fullness below the median, neutral commissure. Reads as understated. Defined lip-line work amplifies the existing geometry.
Defined cupid bow, fuller lower lip, ratio toward 1:2. Considered a feminine-coded shape in the rating literature. Lip-line emphasis on the bow amplifies the read.
Ratio below 1:1.3 (upper lip relatively full). Less common shape. Reads as a distinctive signature; balancing makeup approaches focus on lower lip enhancement.
Ratio above 1:2.5 (lower lip dominates). Common shape. Pairs well with strong chin projection; weak chin projection produces a soft lower-face read.
Negative commissure angle at rest. Often a habit pattern that responds to conscious lower-face relaxation over 30 to 60 days. Makeup corner-lift techniques produce immediate visual change.
Low cupid bow definition, similar upper and lower fullness, wide horizontal line. Reads as classical and balanced. Makeup goal is usually to add subtle peak definition.
Hydration. Consistent water intake plus a non-stripping lip barrier produces visible vermilion volume increase of 5 to 10 percent within 7 to 10 days. Chronic dehydration is the most common cause of apparent lip thinning in adult faces.
Commissure habit. Resting expression sets the corner angle over months. Conscious lower-face relaxation (lips parted, jaw unclenched, tongue resting on roof of mouth) over 30 to 60 days shifts the resting commissure measurably. This is the single largest free intervention on lip read.
Lip-line restoration. The pink-lip line definition that often hides under chapping returns within 14 to 21 days of gentle exfoliation plus barrier repair. The defined lip line increases visible vermilion area without changing the underlying tissue volume.
Four axes. Seven shapes. Lower-third recommendations calibrated to yours.
$14.99 unlocks the full 17-metric PDF: four-axis values with percentiles, lip-shape interpretation in lower-third context, and 30-day action plan.
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