If you're like me, you've felt betrayed by a photo of yourself: one eye squinting, a smile that looks strange, an angle that isn't kind. That can't be me, you think. But it is. So why do we look so different in photos than in the mirror?
Part of the answer is simple physics. A mirror reverses your face, but a photo doesn't. Almost everyone's face is a little uneven — one eye a bit higher, one side of the mouth curving differently. In the mirror, you see that unevenness flipped, day after day, for years.
Over time, the flipped image starts to feel more "right" than the real one. Psychologists call this the "mere exposure effect": the more we see something, the more we like it, simply because it feels familiar. "We tend to like things that are familiar," says Dr. Nicholas Epley, a behavioral scientist at the University of Chicago. "If you are routinely seeing yourself as a mirror image, over time you come to like that image of yourself."
There's a deeper layer, too. In one experiment, Epley's team took plain photos of people, then slowly changed each photo to look more or less attractive. Participants were asked to pick out their own face. "On average, people tended to pick a face that was more attractive than their actual face," Epley says. Scientists call this implicit self-esteem — a hidden sense of our own worth that we don't fully notice.
Dr. Valentina Cazzato, a cognitive scientist at the University of Messina, found something similar. Her team blended people's faces with photos of strangers who'd had cosmetic work done, and people still picked the blended face as their own.
Still, Epley says there's comfort in all this: to everyone else, that "wrong" photo of you looks just as familiar as your mirror image looks to you. "You might not like that image," he says, "but other people see it all the time, and they probably like it better than you do."