Across cultures and throughout history, facial symmetry has been considered a hallmark of beauty. But modern science has revealed something even more striking: symmetric faces don't just look better — they're associated with measurable advantages in life outcomes.

Why Does Facial Symmetry Matter?

Evolutionary biologists propose that facial symmetry signals developmental stability — the ability of an organism to develop normally despite environmental and genetic stresses. Research by Thornhill and Gangestad (1994) in Animal Behaviour demonstrated that symmetry is a reliable indicator of genetic fitness across many species, including humans.

Preferences for facial symmetry have been observed in multiple populations, but their strength and interpretation vary with the sample and context. Symmetry is therefore better understood as one visual cue among many, not a universal measure of health or genetic quality.

Symmetry and Career Success

A study by Rule and Ambady (2008) published in Psychological Science found that observers' ratings of power and leadership from Fortune 500 CEO photographs correlated with company profits. The study did not establish that facial structure caused company performance.

Further research by Berggren, Jordahl, and Poutvaara (2010) in the Journal of Public Economics reported an association between candidates' attractiveness ratings and votes after accounting for several political variables. This is evidence about voter perception, not candidate ability.

The Symmetry-Competence Connection

Why would facial symmetry predict professional outcomes? Research points to several mechanisms:

  • Perceived competence: People with symmetric faces are rated as more competent, intelligent, and trustworthy (Todorov et al., 2005)
  • Social advantages: Symmetric individuals receive more positive social interactions from childhood onward (Langlois et al., 2000)
  • Self-confidence: The accumulated social advantages build greater self-assurance, creating a positive feedback loop
  • Health correlations: Symmetry genuinely correlates with physical and mental health, potentially supporting better performance

How Symmetric Is the Average Face?

Perfect bilateral symmetry is extremely rare. Research reviewed by Little et al. (2011) notes that most faces show subtle asymmetries and that symmetry can affect ratings in some study designs:

  • Highly symmetric faces are rated significantly more attractive than less symmetric ones
  • Even small improvements in symmetry produce noticeable gains in attractiveness ratings
  • Computer-averaged faces (which are artificially symmetric) are consistently rated as highly attractive

Can You Improve Your Facial Symmetry?

While bone structure is largely fixed, several factors can enhance the appearance of symmetry:

  • Skincare: Even skin tone reduces the visual impact of asymmetries
  • Grooming: Balanced eyebrow shaping and hairstyling can create visual harmony
  • Photography angles: Understanding your "better side" for photos and professional headshots
  • Facial exercises: Some evidence suggests targeted exercises may improve muscle balance
  • AI analysis: Modern face analysis apps can identify specific asymmetries and suggest targeted improvements — a practical option for anyone curious about their symmetry profile

Measuring Your Facial Symmetry

Modern AI face analysis technology can compare facial landmarks and estimate left-right differences under a consistent photo setup. Apps like FaceScore use this approach as structured feedback, but the result remains model-dependent and should not be treated as a medical or objective measure of a person.

Key Research References

  • Thornhill, R. & Gangestad, S.W. (1994). "Human fluctuating asymmetry and sexual behavior." Psychological Science, 5(5), 297–302.
  • Rule, N.O. & Ambady, N. (2008). "The Face of Success." Psychological Science, 19(2), 109–111.
  • Berggren, N., Jordahl, H., & Poutvaara, P. (2010). "The Looks of a Winner." Journal of Public Economics, 94(1–2), 8–15.
  • Little, A.C., Jones, B.C., & DeBruine, L.M. (2011). "Facial attractiveness: evolutionary based research." Philosophical Transactions of the Royal Society B, 366, 1638–1659.
  • Todorov, A. et al. (2005). "Inferences of Competence from Faces Predict Election Outcomes." Science, 308(5728), 1623–1626.