10 Years Younger

The show begins by introducing the participant and their story, which is usually an explanation of why they look older than they are. The participant then stands inside the box — a soundproof clear display case placed along a busy street. The show's host, then invites 100 people to guess the age of the participant. The average of these guesses is then considered the "age" of the participant; the show must try and make them look ten years younger than this average, not their actual age.

Source: Wikipedia.org