Evgeniya Bereza, Clinical psychologist, psychosomatics specialist
It's a well-known fact that when meeting a new person, we perceive the whole look. Hardly someone will be able to describe in detail the appearance of the people they meet.
Commonly everyone pays attention to details in other people's appearance that are important for him. For example, a person who is currently puzzled by teeth whitening will pay attention to the smile of his counterpart and evaluate it from his subjective position. Somebody who suffers from excess weight will subconsciously "weigh" everyone passing by and compare with himself in his head.