The golden ratio — represented by the Greek letter phi (φ) — is a mathematical proportion found throughout nature, architecture, and art. When a line is divided so that the ratio of the whole to the larger part equals the ratio of the larger part to the smaller part, the result is always 1.618.
Ancient Greek sculptors applied phi to facial proportions. Renaissance artists including Leonardo da Vinci used it to construct idealized faces. Modern aesthetic researchers have found correlations between phi-aligned facial measurements and cross-cultural perceptions of attractiveness.
Face length-to-width, eye span to nose width, mouth to nose width, face width to mouth width, and lower face proportion — all measured against the ideal of 1.618.
A score of 90+ means your facial proportions are exceptionally close to phi across all five measurements. Most people score between 55–75. A lower score simply means your proportions are more distinctive — not less attractive.