A single attractiveness score out of 10why we won't measure it from a photo.
No such measurement exists.
The reason
No such measurement exists. Rater consensus is real and high (Langlois 2000: within-culture r=.90) but it is an aggregate-of-many-raters figure; roughly 40% of the variance in whether any one person finds a face attractive is idiosyncratic to that person (Leder 2016; Germine 2015). A single number reports the shared 60% and hides the rest. Also: there is no commercially-licensed facial attractiveness dataset in existence — every one (SCUT-FBP5500, MEBeauty, CelebA, FFHQ) is research-only — so a legally-trained consumer beauty score would have to be built on the vendor's own consented, rated data, and none has published one.
Sources
- Leder et al. 2016, Front Hum Neurosci — doi.org/10.3389/fnhum.2016.00155
- Germine et al. 2015, Curr Biol — doi.org/10.1016/j.cub.2015.08.048
- Langlois et al. 2000, Psychol Bull — doi.org/10.1037/0033-2909.126.3.390
Ratios of near-coplanar frontal distances, angles relative to the interpupillary line, and skin appearance — each with an error bar, each against a population you choose. Start an analysis or read the methodology.