← All guidesWhat the research says
What studies actually show about attractiveness, from facial averageness to the halo effect.
What the research says
Jawline & gonial angle
- The gonial angle is the corner where the back of your jaw turns forward. Smaller angle, squarer corner.
- Adults average roughly 117°–128° on X-rays, and men and women differ by only a few degrees.
- Side-profile photos are rough at best for one person. Front-facing photos and apps haven't been validated.
- The bone is set in adulthood. What changes how your jaw looks is mostly the fat over it.
- Only surgery moves the bone. Fat loss, fillers or Botox in the chewing muscle change the look. Gum chewing and mewing have no trial evidence.
Canthal tilt
- Tilt is the angle from the inner to the outer eye corner. Positive means the outer corner sits higher.
- A positive tilt is normal: study averages run from about +1° to +9.5° depending on sex and ancestry.
- In one rated-photo study, the top group averaged about 9°, versus about 6.5° for the bottom group.
- More isn't always better. Lifting corners past their natural position made faces rate worse.
- Chin angle and head tilt skew the reading a lot, so measure straight on and average both eyes.
- Only surgery moves the corner. Brows, lid tension, sleep and photo angle change how it reads.
Hunter eyes
- It's a community label for four traits together: upward tilt, deep-set eyes, little visible upper lid and a low brow.
- Eye depth and tilt come from bone and how the lids are anchored, so they're fixed in adults without surgery.
- Sleep is the lever with the best evidence. Short sleep makes eyes look puffier, redder, darker and more tired.
- Forcing a lower brow or a higher outer corner lowered attractiveness and trust ratings in studies.
- Mewing has never been trial-tested for eyes, and a negative tilt isn't proven to be unattractive.