Gummy smile Botox typically lasts three to four months, though individual results can vary. The treatment works by relaxing the muscles that pull your upper lip too high when you smile, reducing the amount of gum tissue that shows. Because the effects are temporary, you’ll need repeat treatments a few times a year to maintain results.
How the Treatment Works
When you smile, a group of muscles pulls your upper lip upward. In people with a gummy smile, these muscles are overactive, lifting the lip high enough to expose more than a few millimeters of gum tissue above the teeth. Botox is injected into the muscles responsible for this excessive lift, temporarily weakening their ability to contract. The result is a smile that still looks natural but sits slightly lower, covering more of the gums.
The doses involved are small compared to other cosmetic Botox treatments. For a mild gummy smile (where less than 5 mm of gum shows), as little as 2 to 3 units per side is often enough. Higher doses of 5 units or more can be used for more pronounced cases, though increasing the dose also raises the chance of side effects. Most people notice the full effect within two weeks of treatment.
Why Results Fade After a Few Months
Botox doesn’t permanently change the muscle. It blocks the chemical signal that tells the muscle to contract, but your body gradually builds new connections to replace the blocked ones. As those connections regenerate, the muscle regains its full strength and your upper lip returns to its original position when you smile. This regeneration process takes roughly three to four months for most people.
To keep results consistent, most providers recommend scheduling follow-up treatments every three to four months. Some patients find that after several rounds of treatment, the muscle weakens enough that they can stretch the interval slightly longer between sessions.
Factors That Shorten or Extend Your Results
Not everyone metabolizes Botox at the same rate. Several factors influence how quickly the effects wear off:
- Exercise intensity: Vigorous physical activity raises your overall metabolic rate, which can cause Botox to break down faster. People who do high-impact sports like CrossFit or long-endurance training tend to see shorter-lasting results.
- Stress and sleep: Chronic stress, poor sleep quality, and nutritional deficiencies can all negatively affect how long the treatment holds.
- Individual biology: At the molecular level, certain enzymes in your cells protect the active component of Botox from being broken down. Variations in how efficiently these enzymes work can make the treatment last longer in some people and shorter in others.
- Muscle strength: Stronger, more active facial muscles may overpower the effects of Botox sooner than weaker ones.
If you find your results fading noticeably before the three-month mark, it’s worth mentioning your activity level and lifestyle habits to your provider, since these factors can guide dosing adjustments.
Gummy Smile Botox vs. a Lip Flip
A Botox lip flip is a related but different treatment that sometimes gets confused with gummy smile correction. The lip flip targets the muscle that circles your mouth, relaxing it so the upper lip rolls slightly outward and appears fuller. It’s placed near the center of the upper lip and the corners of the mouth. A gummy smile correction, by contrast, targets the muscles higher up alongside the nose that are responsible for pulling the lip upward.
The lip flip also wears off faster, typically lasting only 8 to 12 weeks compared to the 3 to 4 months you can expect from gummy smile Botox. Some providers combine both treatments when a patient wants to reduce gum show and add a bit of lip fullness at the same time.
Possible Side Effects
Because gummy smile Botox uses very small doses, serious complications are uncommon. The most typical side effects are minor bruising or swelling at the injection site, which usually resolves within a few days.
The more notable risk is smile asymmetry. If the Botox spreads to nearby muscles that control other parts of your facial expression, one side of your smile may look different from the other. This can happen when injections are placed too superficially or slightly off-target. The good news is that any asymmetry is temporary and resolves as the Botox wears off. Choosing an experienced provider who understands the anatomy of the upper lip muscles significantly reduces this risk.
In rare cases, over-relaxation of the area can make the upper lip feel stiff or slightly affect how it moves during speech. Again, these effects are not permanent and typically become less noticeable within a few weeks as the body begins to recover some muscle function.
How It Compares to Surgical Options
Botox is the least invasive option for managing a gummy smile, but it requires ongoing maintenance. Lip repositioning surgery is a more permanent alternative that limits how high the upper lip can travel when you smile. Studies comparing the two approaches found that both effectively reduce visible gum tissue, but surgery provides more stable long-term results while Botox offers a quick, reversible improvement with no downtime. Many people start with Botox to see if they like the change before considering anything more involved.