Smiling with your eyes means engaging the muscles around your eye sockets, not just pulling up the corners of your mouth. This is what scientists call a Duchenne smile, and it’s the difference between looking genuinely happy and looking like you’re posing for a photo you’d rather not be in. The good news: even though this expression is linked to real emotion, you can learn to produce it deliberately with a bit of practice.
What Makes an Eye Smile Different
Every smile uses the muscle that pulls your lip corners upward toward your ears. That’s the baseline, and it’s the smile most people default to when someone points a camera at them. A smile that reaches the eyes adds a second muscle, a ring-shaped one that wraps around each eye socket. When it contracts, it pulls skin from your temples and cheeks inward toward the eyeball. That single action creates a cascade of visible changes: your cheeks lift, the skin below your eyes bunches slightly, your lower eyelids rise, and small lines fan out from the outer corners of your eyes.
Those fan-shaped lines are crow’s feet, and they’re the most recognizable sign of a genuine smile. The eyes themselves also narrow, giving that warm, slightly squinted look people instinctively read as real happiness. Without that eye engagement, you get a mouth-only smile that can actually work against you. Research in evolutionary psychology found that a mouth-only smile made people less likely to believe what someone was saying compared to a completely neutral expression. A full eye-and-mouth smile, on the other hand, roughly doubled the odds that people would trust the accompanying statement.
Why It Matters Beyond Photos
People are remarkably good at reading the difference, even if they can’t explain what they’re seeing. Duchenne smiles are consistently rated as more authentic, more spontaneous, and more intense than mouth-only smiles. People who display them are also perceived as more intelligent and higher in social status. In controlled experiments, a genuine-looking smile made an accompanying statement nearly twice as persuasive, while a tight, controlled smile actually decreased credibility below what a neutral face would achieve. The takeaway is straightforward: a forced smile doesn’t just fail to help, it can actively make you seem less trustworthy.
The effect extends to physical stress responses in the people around you. When researchers had participants receive different types of smiles during a stressful task, warm, genuine smiles helped receivers return to their baseline stress hormone levels within 30 minutes. Cold, dominant smiles kept those levels elevated well past that window. Your smile doesn’t just shape how people see you; it shapes how their body responds to you.
How to Practice Step by Step
Stand in front of a mirror with your face completely relaxed. The goal is to isolate the muscles around your eyes from everything else on your face, which feels strange at first because most people have never consciously activated them.
Start by thinking of something that genuinely makes you happy, a specific memory, a person, a moment. Don’t try to smile with your mouth at all. Instead, notice what happens around your eyes when that feeling surfaces. You should see your lower eyelids push up slightly and your cheeks lift. That’s the movement you’re trying to reproduce on command.
Next, try squinting very slightly while keeping your forehead and eyebrows relaxed. This is critical. Many people furrow their brow when they try to engage their eye muscles, which creates a look that reads as confused or aggressive rather than warm. The eyebrows should stay still or drop just barely. All the action happens below the brow line: cheeks rising, lower lids lifting, the outer eye corners crinkling softly.
Once you can produce that eye engagement on its own, add a small mouth smile. Not a big grin. Just enough upward pull at the corners to complement what your eyes are doing. The combination of slight eye narrowing and a moderate mouth smile is what photographers and modeling coaches call a “smize,” a term popularized by Tyra Banks but rooted in the same anatomy Duchenne described over 150 years ago.
Common Mistakes to Avoid
The most frequent error is overdoing the squint. A genuine eye smile narrows the eye opening gently. Clamping your eyes into a hard squint looks like you’re staring into the sun, not expressing warmth. Think “soft focus” rather than “trying to read a distant sign.”
Another common mistake is smiling too broadly with the mouth. A very wide grin will actually engage the eye muscles on its own through sheer mechanical force, since the cheek tissue gets pushed upward into the eye area. This can make it harder to tell whether you’ve truly learned the eye engagement or are just compensating with mouth intensity. Paul Ekman, the psychologist who pioneered facial expression research, noted that a deliberately broad smile produces all the eye-area signs automatically, masking whether the eye muscles are firing independently. The real test of your skill is whether you can create the eye crinkle with only a slight or moderate mouth smile.
Watch out for asymmetry, too. If one eye crinkles and the other stays wide open, it reads as a smirk or a wink rather than a smile. Practice in front of a mirror and pay attention to whether both sides of your face are matching.
Exercises to Build Control
Gaining voluntary control over the muscles around your eyes takes repetition, just like learning to raise one eyebrow. Try these drills a few minutes a day in front of a mirror:
- Cheek lifts: Place your fingertips lightly on your cheekbones. Try to push your fingers upward using only your cheek and lower eyelid muscles, without smiling with your mouth. Hold for six seconds, relax, and repeat three times.
- Soft squint: With a completely relaxed mouth, narrow your eyes about 20 percent, as if you’re looking at something pleasant in soft light. Hold, release, repeat. Focus on keeping your forehead smooth.
- The contrast drill: Alternate between a mouth-only smile (no eye engagement) and a full smile (eyes and mouth together). Switching back and forth helps you feel the difference and builds the neural pathway for activating each pattern independently.
Most people notice improvement within a week or two of daily practice. The movement starts to feel less forced as the motor pattern becomes familiar, which is exactly what you want, since the whole point is to make the expression look effortless.
Using Your Eye Smile in Real Life
For photos, the key is timing. Don’t hold a smile for ten seconds waiting for the shutter. Instead, think of your happy thought right as the photo is being taken. Held smiles decay quickly around the eyes even when the mouth stays frozen, which is why the last shot in a long series always looks the most strained.
In conversation, an eye smile is most effective when it arrives naturally at moments of genuine connection: greeting someone, hearing good news, laughing at a joke. You don’t need to maintain it constantly. A flash of real eye engagement at the right moment is far more powerful than a sustained performance.
In situations where your mouth is partially hidden, whether by a face covering, a scarf, or a video call where the lower half of your face is poorly lit, your eyes carry even more weight. Research on communication while wearing face masks found that exaggerated facial expressions around the eyes were one of the most effective compensatory strategies for conveying warmth. Making direct eye contact while engaging that gentle squint communicates friendliness even when your mouth is completely invisible.