Corner of the Mouth Botox — Will Your Smile Actually Look More Natural?

Corner of the Mouth Botox — Will Your Smile Actually Look More Natural?

Many people notice that when they look in the mirror with a neutral expression, the corners of their mouth seem to angle slightly downward. It becomes even more obvious in photos. Search it online, and "corner of the mouth Botox" comes up right away — along with the question: "If I get this done, will my smile actually look more natural?"

There's a Muscle That Pulls Your Mouth Corners Down

Your face has muscles that lift the corners of your mouth — and muscles that pull them downward. Which side has the stronger pull depends on your natural facial habits and expressions. If your mouth corners tend to look like they're always drooping, it means the muscle that pulls them downward* is working harder than the one lifting them.

<small>*Depressor anguli oris: The muscle that runs from the corners of the mouth down toward the jaw. When this muscle is strong, the corners of the mouth appear to droop in a resting expression.*</small>

Corner of the mouth Botox works by injecting a small amount of Botox into this muscle to gently reduce the downward pull. With that force eased, the lifting muscles become relatively more active — giving the corners of the mouth a naturally softer, slightly lifted appearance.

The amount used is typically 2–4 units per side, which is very small compared to other Botox procedures. To put it in perspective, masseter botox uses 30–50 units per side. The reason such a small amount is used here is that the muscles around the mouth are directly involved in speech and facial expression. Using too much can make your smile look unnatural or cause slight changes in pronunciation.

It's Less About "Lifting" and More About "Not Drooping"

This is where a lot of people get confused. Corner of the mouth Botox doesn't actively pull your mouth corners upward. More precisely, it removes the force that was pulling them down. The slightly droopy, stern-looking resting expression gradually gives way to a softer, more balanced line.

When you smile, the corners of your mouth also move more freely — because the resistance from the depressor muscle is reduced. That said, it won't make your smile dramatically wider or lift your mouth corners all the way up toward your cheekbones.

Botox Alone May Not Be Enough in Some Cases

Drooping at the corners of the mouth isn't always just a muscle issue. As we age, volume loss around the corners of the mouth can lead to what's known as marionette lines*. In that case, Botox alone won't address the lines themselves.

<small>*Marionette lines: The lines that run from the corners of the mouth down toward the chin. They get their name from the hinged jaw of a marionette puppet.*</small>

In these situations, many patients benefit from combining Botox with Filler. Botox reduces the downward muscle pull, while Filler fills in the hollowed areas — and together, the result looks significantly more natural. If you've tried just one and felt like "it didn't really do much," the other component may be what's missing.

Results Appear Within Days and Last 4–6 Months

You won't notice any change immediately after the procedure. It usually takes around 3–7 days for the muscle activity to ease and the effect to become visible. Results typically last 4–6 months, though this varies from person to person.

People who are very expressive or use their facial muscles frequently may find that the results fade more quickly. If you tend to be very animated or move your mouth corners a lot, your results may not last as long. That doesn't mean getting it done more frequently is always better — rather, it's worth working with your doctor to find a schedule that fits your own expression patterns.

Some first-time patients feel like "nothing really changed." This can be because the amount used was intentionally conservative — but it can also be because it's hard to objectively notice the subtle difference in your own resting expression. Taking a photo in the same pose and lighting before and after the procedure is one of the best ways to see the change clearly.

On the other end, some patients expect a dramatic transformation and come away disappointed. Corner of the mouth Botox isn't the kind of procedure where others will immediately notice something is different. The most natural outcome is one where you feel your expression has softened — while people around you simply say, "You look great today."

What to Think About Before You Go In

Keeping three things in mind will make your consultation much smoother. First, identify whether what bothers you is the drooping at rest, or the awkwardness when you smile. If it's the resting droop, corner of the mouth Botox tends to be very effective.

Second, check whether marionette lines are also present alongside the drooping corners. If they are, combining Filler or another procedure will typically give a more natural result.

Third, show your doctor how your face naturally moves — smiling, talking, and in a neutral expression. Seeing all three is essential for determining the right amount and placement. Too much Botox in this area can make expressions look stiff or slightly affect pronunciation, so the principle of "start small and add if needed" very much applies here.

Frequently Asked Questions

Q1. Will corner of the mouth Botox affect my speech?

A. When the appropriate amount is used, it won't affect your pronunciation. However, if too much is injected, you may notice some stiffness in your expressions or a slight change in how certain sounds feel. Starting conservatively is the safest approach.

Q2. Can I see results after just one session?

A. Most patients do notice results after the first session. However, if your depressor muscles are particularly strong, one session may not be fully sufficient — in which case the amount can be adjusted at your next visit.

Q3. Can I get Filler at the same time?

A. Combining both is quite common. Botox reduces the muscle pull while Filler restores volume along the lines, and together the outcome tends to look more natural. That said, rather than receiving both procedures on the same day, it's generally safer to space them out.