Dove produced a 74 second film that explores the process of modeling. A woman walks in. Makeup is caked on. Photos taken. Photoshop alters the photo. The altered picture is placed on a billboard. In the end, the girl on the billboard doesn't even look like the original model who walked in the door. As the end of the film says, "No wonder our perception of beauty is so distorted."
Please watch this video. Then show it to a group of teenagers.