"Mirror, mirror on the wall, who's the fairest of them all?"
What if when we looked in the mirror it gave us feedback, similar to that of standing on the bathroom scales?
This mirror analyses your face using recognition technology and cross-references it with collated data to give quantified readings about your appearance. For example, It can give a measurement not only of beauty, but a reading of trustworthiness or describe how aggressive you are.
Consciously and subconsciously we make judgements based on personal appearance about ourselves and others. On a primary level we asses factors like attractiveness and interpret emotions but research suggests our character can also be evaluated from our facial appearance.
With this kind of data about ourselves being more freely calculated and communicated it may pressure people to have cosmetic surgery now, not only to make them more attractive, but also to hide or highlight certain attributes.