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What 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.
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