Free · runs on your device
Lip shape detector
Fullness, upper-to-lower balance, and width measured from your lip landmarks — plus what flatters your measured shape.
CostFree
TimeUnder 1 min
SignupNone
DataStays on device
478-point landmark map
Step 1 of 2 · your photo
Add a photo to measure
Face the camera straight on, hair off the face, even light, no tilt.
How it works
Add your photo
Camera or upload, either works.
Mapped in your browser
478 landmarks, entirely on your device.
Your measured result
Numbers and lines drawn on your photo.
On-device · never uploaded
478 landmarks
Free · no signup
The science
How lip shape is measured
01
This tool measures three things from your lip landmarks: overall fullness (lip height relative to mouth width), the balance between upper and lower lip, and mouth width relative to your face. Those three numbers separate the common shape labels — full, wide, bow-shaped (defined cupid’s bow with a fuller center), and thinner or evenly balanced lips.
02
The typical lower lip is noticeably fuller than the upper — ratios around 1 : 1.6 are the population norm, which surprises people who assume balanced lips are standard. A strong cupid’s bow is an independent trait: you can have thin lips with a sharp bow or full lips with a soft one.
03
Practically, shape drives technique: overlining works best confined to the center of the upper lip on bow shapes, gloss placement differs on wide versus full lips, and dark liner visually narrows a wide mouth. Knowing the measured shape turns those from generic tips into ones aimed at your actual geometry.
The overlining playbook, by measured shape
Thin-balanced lips: overline the center third of both lips by a millimeter, never the corners — corner overlining is what reads as visible makeup. Full lips: skip overlining; a liner exactly on the border with gloss center-stage maximizes what is there. Bow-heavy shapes: resist sharpening the bow further; softening it with liner reads fuller. Wide-thin lips: bring the visual focus inward — deeper color at the center fading outward (the Korean gradient technique) narrows and plumps simultaneously. Uneven upper-lower balance: overline only the smaller lip’s center, which this tool’s ratio identifies precisely. Every trick is placement; the measured shape tells you the placement.
FAQ
Common questions
What is the most common lip shape?+
A lower lip about 1.6× the height of the upper, moderate width, and a soft cupid’s bow. Perfectly balanced upper and lower lips are the exception, not the rule.
How can I make my lips look fuller without filler?+
Overline only the center third of the lips, keep the corners at your natural line, add gloss or a lighter shade in the center, and use liner one shade darker than your lipstick at the edges. Center-weighted tricks read natural; full-perimeter overlining does not.
Is my photo analyzed privately?+
Yes — the landmark model runs in your browser and the photo never leaves your device.
Do lips get thinner with age?+
Yes — collagen loss and the philtrum lengthening thin the visible upper lip especially, usually from the late 30s. Center-weighted overlining and hydrating glosses counteract the read; retinoids on the lip border have modest evidence for the structure.
What lip shape do fillers give you?+
Whatever is injected — which is the problem with trend-driven work. Good injectors enhance your measured ratio (fuller center on a bow shape, balanced volume on thin-balanced) rather than installing one template; bring your measurements to the consult.