Pout Boost Botox – How It Works and What to Expect

Medically Reviewed
Medically Reviewed by Dr. Aurora Kalmanson on
Written by Fillers Editorial Team, plastic surgery specialists.

Botox lip flips have emerged as a popular alternative to traditional lip fillers for those seeking a subtle enhancement of their pout. This minimally invasive procedure uses small amounts of botulinum toxin injected strategically around the upper lip to relax the orbicularis oris muscle, causing the lip to roll slightly outward and appear fuller.

Unlike dermal fillers that add volume, the botox lip flip creates the illusion of a plumper lip by altering muscle dynamics. The treatment is quick, typically lasting only 10-15 minutes, with results becoming visible within a few days and lasting up to 3-4 months. For individuals desiring a natural-looking enhancement without the commitment of fillers, the botox lip flip offers a low-risk, temporary solution to achieve a more pronounced and youthful smile.

How Botox Lip Flip Works

The botox lip flip procedure involves precise injections of botulinum toxin into specific muscles around the mouth. This careful placement relaxes targeted areas, allowing the upper lip to roll outward subtly. The result is a fuller, more prominent lip appearance without adding volume.

Targeted Injection Sites

Orbicularis Oris Muscle: This circular muscle surrounds the mouth and plays a crucial role in the botox lip flip procedure. It is responsible for various lip movements, including puckering, pursing, and closing the lips. When botox is injected into specific points of this muscle, it causes a controlled relaxation. The orbicularis oris muscle is particularly important because its partial relaxation allows the upper lip to roll slightly outward, creating the desired “flip” effect. The injections are strategically placed to target only the upper portion of this muscle, ensuring that normal mouth functions, such as speaking and eating, are not compromised. The precision of these injections is crucial to achieve the desired aesthetic result while maintaining natural lip movement and expression.

Cupid’s Bow and Corners of the Mouth: These areas are critical injection sites for the botox lip flip procedure. The Cupid’s bow, the double curve of the upper lip resembling the bow of Cupid, is a focal point for enhancing lip aesthetics. Injections near the Cupid’s bow help to elevate and define this area, creating a more pronounced and attractive lip shape. The corners of the mouth, also known as the oral commissures, are equally important. Botox injections here can help lift the corners slightly, combating the appearance of a downturned mouth that often occurs with aging. This subtle lift contributes to a more youthful and pleasant expression. The combination of treating both the Cupid’s bow and mouth corners ensures a balanced and natural-looking enhancement of the entire upper lip area.

Botox’s Effect on Lip Muscles

Relaxation and Flipping of Upper Lip: When botox is injected into the targeted areas around the upper lip, it blocks nerve signals to the muscle fibers, leading to a controlled relaxation of the orbicularis oris muscle. This relaxation is key to the flipping effect. As the muscle loosens, it allows the upper lip to roll outward slightly, exposing more of the vermilion border (the line where the red part of the lip meets the skin). This outward roll creates the illusion of a fuller lip without actually increasing its volume. The effect is most noticeable when smiling, as the relaxed muscle permits the lip to lift higher, showing more of its surface. It’s important to note that this relaxation is partial and localized, ensuring that overall lip function and expression remain intact.

Creation of Fuller, Poutier Appearance: The botox lip flip creates a fuller, poutier appearance through a combination of muscle relaxation and optical illusion. By allowing the upper lip to roll outward, more of the lip’s surface becomes visible, giving the impression of increased volume and fullness. This effect is particularly pronounced in individuals with naturally thin lips or those whose upper lip tends to disappear when smiling. The treatment also subtly elevates the lip, enhancing the cupid’s bow and creating a more defined lip border. This elevation contributes to a youthful, pouty look that many find desirable. Additionally, the slight relaxation of the surrounding muscles can soften fine lines around the mouth, further contributing to a smoother, more youthful appearance of the entire perioral area.

Botox Lip Flip Results and Longevity

The results of a botox lip flip are not immediate but develop gradually over time. Patients can expect to see changes in their lip appearance within days of the procedure, with the full effect becoming evident after about a week. The longevity of these results varies, typically lasting several months.

Onset of Results

Initial Visibility (2-3 Days): The effects of a botox lip flip begin to manifest within the first few days following the procedure. During this initial period, patients may notice subtle changes in the appearance of their upper lip. The lip might feel slightly different or appear marginally fuller, though these changes are often not dramatically visible to others. This gradual onset is due to the time it takes for the botulinum toxin to start affecting the targeted muscle fibers. Patients are often advised to be patient during this phase and avoid manipulating or excessively touching the treated area. It’s important to note that any immediate fullness observed immediately after the injections is typically due to minor swelling from the procedure itself and not the actual botox effect.

Full Effect (7-10 Days): The complete results of a botox lip flip typically become apparent within 7 to 10 days after the procedure. During this period, the full relaxation of the treated muscle fibers occurs, allowing the upper lip to roll outward more prominently. Patients will notice a more definitive change in their lip appearance, with the upper lip appearing fuller and more pronounced, especially when smiling. The cupid’s bow may become more defined, and the overall shape of the upper lip can look more aesthetically pleasing. This timeframe also allows for any minor swelling or bruising from the injection process to subside completely, revealing the true results of the treatment. Patients are often advised to schedule a follow-up appointment around this time to assess the results and make any necessary adjustments.

Duration of Results

Average Longevity (2-4 Months): The effects of a botox lip flip typically last between 2 to 4 months, though this can vary from person to person. During this period, patients enjoy the enhanced appearance of their upper lip, with a fuller, more prominent look. The longevity is due to the temporary nature of botulinum toxin’s effect on muscle activity. As the neurotoxin gradually wears off, the treated muscles slowly regain their full function, and the lip gradually returns to its original position. This temporary nature is often seen as an advantage, allowing patients to try the treatment without a long-term commitment. It also provides the opportunity to adjust the treatment in subsequent sessions based on the patient’s satisfaction with the results.

Factors Affecting Duration: Several factors can influence how long the results of a botox lip flip last. Individual metabolism plays a significant role; those with faster metabolisms may break down the botulinum toxin more quickly, leading to shorter-lasting results. The dosage used during the procedure also affects longevity, with higher doses potentially lasting longer. Muscle strength and activity in the treated area can impact duration; individuals who frequently use these muscles, such as those who speak or smile often, may see the effects wear off more quickly. Additionally, first-time patients might experience shorter-lasting results compared to those who have had multiple treatments, as repeated use can lead to longer-lasting muscle relaxation. Lifestyle factors, including diet, exercise, and stress levels, can also influence how long the effects persist.

Frequently Asked Questions

How long does a botox lip flip last?

The effects of a botox lip flip typically last between 2 to 4 months. Individual results may vary depending on factors like metabolism and muscle activity.

Is a botox lip flip painful?

Most patients describe the botox lip flip as minimally painful. You may feel a slight pinch during the injection, but the discomfort is generally brief and well-tolerated.

Can a botox lip flip be reversed?

A botox lip flip cannot be immediately reversed. However, the effects are temporary, wearing off within a few months as the botulinum toxin naturally breaks down in the body.

How much does a botox lip flip cost?

The cost of a botox lip flip varies depending on the provider and location, but it generally ranges from $100 to $200. Always consult with your practitioner for detailed pricing.

Can botox lip flip be combined with lip fillers?

Yes, a botox lip flip can be combined with lip fillers to achieve both subtle muscle relaxation and added volume. This combination can provide a complete lip enhancement.

How often can I get a botox lip flip?

You can get a botox lip flip every 3 to 4 months. Regular maintenance treatments help sustain the lip’s enhanced appearance without significant downtime.

Are there any age restrictions for getting a botox lip flip?

There are no specific age restrictions for getting a botox lip flip, but it is generally recommended for adults. Consult with your practitioner to determine if it's suitable for you.

Can botox lip flip correct asymmetrical lips?

A botox lip flip can help improve minor asymmetry by relaxing the muscles around the lips. However, for more significant asymmetry, lip fillers or other treatments might be needed.

How does a botox lip flip differ from lip threading?

A botox lip flip uses botulinum toxin to relax lip muscles, creating a subtle outward flip. Lip threading involves inserting dissolvable threads to lift and enhance the lip structure, offering more dramatic results.


The botox lip flip is an effective, minimally invasive option for enhancing the appearance of the upper lip without adding volume. Whether choosing a botox lip flip or combining it with traditional lip fillers, patients can achieve natural, balanced results adapted to their aesthetic goals. Understanding the procedure, its benefits, potential side effects, and necessary aftercare ensures successful outcomes and satisfaction. This versatile treatment offers both subtlety and flexibility, making it an appealing choice for those seeking a more defined and youthful smile. Always consult with a qualified practitioner to discuss your options and create a personalized treatment plan.

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Teixeira, J. C., Ostrom, J. Y., Hohman, M. H., & Nuara, M. J. (2021). Botulinum Toxin Type-A for Lip Augmentation: "Lip Flip".

Dr. Aurora Kalmanson

Always Consult a Medical Specialist

The information provided in this blog is for informational and educational purposes only and should not be interpreted as personalized medical advice. It's crucial to understand that while we are medical professionals, the insights and advice we provide are based on general research and studies. They are not tailored to individual health needs or conditions. Thus, it is essential to consult directly with a healthcare provider who can offer personalized medical advice relevant to your specific situation.