If you're looking for fuller lips without the commitment of injectable fillers, a lip flip might be exactly what you need. A lip flip is a non-surgical cosmetic procedure that uses botox to enhance lip shape, creating a subtle, natural look compared to fillers. Rather than adding volume, it relaxes specific muscles so the upper lip rolls slightly outward, giving the appearance of a plumper pout.
In this guide, you'll learn how the botox lip flip works, what to expect before and after the lip flip procedure, who makes a good candidate, and the key differences between a lip flip vs lip fillers. You'll also find cost estimates, evidence-based guidelines, and a checklist for choosing the right provider.
How Botox Lip Flip Works: Botulinum Toxin Injections
A lip flip uses botulinum toxin type A - most commonly Botox, though Dysport, Xeomin, and Jeuveau are also used - to partially relax the orbicularis oris muscle surrounding the mouth. This is the muscle responsible for pressing your lips together, and when its fibers are overactive, the upper lip can tuck inward during movement. By relaxing specific segments, the upper lip rolls slightly upward, revealing more of the vermilion (the pink tissue) and creating subtle definition without surgery.
A lip flip uses 4-6 units of botox injections, placed strategically at the Cupid's bow, along the vermilion border, and sometimes at the oral commissures (corners of the mouth). Some providers also place small amounts near the lower lip depending on anatomy. Botulinum toxin injections at these sites weaken the muscles just enough to allow gentle eversion without interfering with normal function.
Results typically last two to five months, with most patients noticing initial changes within a few days and full effects around 7 to 14 days post-treatment. Onset speed and duration vary by brand, individual metabolism, and muscle activity level.

Lip Flip Procedure: Before, During, After
The entire appointment - from check-in to walking out the door - is fast. The procedure takes about 10 to 20 minutes to complete, and there's virtually no downtime required. Your provider will review your medical history, assess your lip anatomy at rest and in motion, then proceed with injections.
Before the Lip Flip Procedure
Preparation is straightforward but important:
Stop blood thinning medications at least 24-72 hours beforehand (aspirin, ibuprofen, naproxen). Patients should avoid blood-thinning medications to reduce bruising risk.
Avoid supplements that increase bleeding, including fish oil and vitamin E, ideally for about a week before treatment.
Avoid alcohol for at least 24 hours prior.
Disclose active infections - cold sores, canker sores, or oral herpes may require rescheduling.
Skip over the counter anti-inflammatory drugs the day of treatment.
Your provider should also screen for allergies, neuromuscular conditions, and pregnancy status before proceeding.
During the Lip Flip Procedure
Your injector will mark precise points along your upper lip. A lip flip uses small, targeted doses - typically 2 to 4 units in the upper lip area, sometimes 2 additional units at the corners.
The procedure takes just a few minutes of actual injection time. Most people describe the sensation as small pinches or mild discomfort. If you're sensitive, your provider can apply topical numbing cream beforehand, though many patients skip it. The treatment is non invasive and requires no incisions or anesthesia.
Aftercare and Recovery for Lip Flip Procedure
Recovery time is minimal. Here's what to expect and do immediately after:
Apply ice packs to reduce swelling
Avoid touching, rubbing, or pressing your lips for several hours
Don't use straws, smoke, or kiss for 2-3 days to prevent botox migration
Sleep face-up rather than face-down the first night
Resume daily activities immediately - most people return to work or errands right after
Full results of a lip flip appear within one week. Many patients notice the most dramatic change around day 7-14. Common short-term reactions include mild swelling, redness, and tenderness at the injection site. Temporary muscle weakness may occur after the procedure, and some people report slight difficulty sealing their lips for the first few days. These effects typically resolve within about a week.
For optimal results, avoid strenuous exercise the day of treatment and follow your provider's specific aftercare instructions.
Who Is a Good Candidate for a Lip Flip
Good candidates seek subtle lip enhancement without significant volume increase. The lip flip works best for people whose upper lip tucks inward when smiling, or whose natural lip tissue appears thinner in motion than at rest.
Ideal characteristics include:
Upper lip that "disappears" during a smile
Desire to subtly enhance lip appearance rather than dramatically change it
Interest in reducing a gummy smile (lip flips can help correct a gummy smile by limiting how high the upper lip rises)
Contraindications to screen for:
Candidates should not have neuromuscular disorders or allergies to botulinum toxin - conditions like myasthenia gravis increase risk significantly
Any neuromuscular disorder affecting muscle function
Pregnant or breastfeeding individuals should avoid lip flips
Active oral infections or herpes outbreaks
Previous adverse reactions to botulinum toxin products
Those with very thin lips may prefer dermal fillers instead, since a flip can only reveal tissue that's already there - it won't create volume where none exists.
A consultation with a qualified provider is essential to assess your specific anatomy and determine candidacy.
Lip Flip Vs Lip Fillers: Key Differences And Adding Volume
This is the comparison most people are researching, so here's a clear breakdown:
Feature | Lip Flip | Lip Fillers |
|---|---|---|
Mechanism | Relaxes muscles for lip eversion | Physically adds volume with hyaluronic acid |
Adding volume | No - lip flips do not add volume to the lips | Yes - fillers inject material into lip tissue |
Duration | Lip flips typically last two to five months | Lip fillers can last six months to over a year |
Downtime | None - resume daily activities same day | Moderate swelling/bruising for 3-7 days |
Swelling | Lip flips generally result in less swelling than lip fillers | More pronounced, especially first 48 hours |
Cost | $80-$500 | $500-$2,000+ |
Result style | More subtle result | More dramatic, customizable volume |
Lip flips enhance lip shape without adding volume, making them ideal for a subtle result and natural looking results. Lip fillers use hyaluronic acid to add volume and can reshape the lip more dramatically.
Combining both treatments: Many providers recommend trying a lip flip first as a "test drive." If you want both the eversion effect and actual volume, your provider can combine a flip with filler - typically placing filler first, then allowing about two weeks before adding the flip. This layered approach delivers fuller lips with the natural border definition of a flip.

Risks, Side Effects, and When To See A Doctor
Common side effects include mild swelling and bruising at the injection site. Most patients also report tenderness or slight numbness that fades within 48 hours. Functional side effects - like difficulty drinking through a straw or pronouncing certain sounds - are normal and temporary.
Rare but serious complications:
Asymmetric smile from botox migration
Drooping of nearby facial structures
Allergic reactions
In extremely rare cases, systemic effects (difficulty breathing or swallowing)
Risk factors that increase complication likelihood include inexperienced injectors, excessive dosing, and unscreened medical conditions.
Seek immediate care if you experience: difficulty breathing or swallowing, signs of spreading infection (fever, increasing redness), severe one-sided drooping, or symptoms of anaphylaxis.
Cost, Longevity, and Maintenance
A lip flip typically costs between $80 and $500 in the U.S., depending on your geographic region, provider expertise, and number of units used. This makes it one of the most affordable cosmetic procedures available.
Results typically last three to four months for most people, though the range spans two to five months depending on metabolism, dose, and muscle activity. As botox wears off, your lip will gradually return to its pre-treatment appearance.
To maintain your results, plan for repeat treatments every 3-4 months. Patients often return for follow-up treatments every few months once they find a schedule that works. Some people report slightly longer intervals between sessions over time as muscles adapt.
Evidence, Guidelines, and Cleveland Clinic Notes
The cleveland clinic lists the lip flip as a popular nonsurgical option, noting that botulinum toxin use in the perioral area is off-label (not FDA-approved specifically for lip flip). They recommend scheduling treatment at least two weeks before any major event to allow full results and recovery.
A 2026 clinical study published in Aesthetic Plastic Surgery followed 17 women treated with 4 units of onabotulinumtoxinA. Researchers measured a statistically significant increase in upper lip height at day 15 using 3D imaging, with no change in lip volume. Patient satisfaction scored approximately 79 out of 100 on the FACE-Q scale. All adverse events were mild and resolved within 30 days.
Board-certified providers with training in facial anatomy and injection technique are strongly recommended, as off-label use requires specialized knowledge.
Choosing a Provider and Cosmetic Procedures Checklist
Your results depend heavily on who performs the treatment. Look for an experienced provider - specifically board-certified dermatologists or plastic surgeons with extensive experience in cosmetic injectables.
Consultation checklist:
How many lip flips has this experienced injector performed?
Which neuromodulator brand and how many units will be used?
What injection sites are planned for your anatomy?
How does the provider handle complications?
Can you review before-and-after photos (both at rest and while smiling)?
Verify that the clinic follows sterile protocols: proper needle disposal, correct botulinum toxin storage temperatures, and emergency response procedures. When researching providers online, you may encounter websites performing security verification before displaying reviews or credentials. If a security service flags your browser due to malicious bots protections, a verification successful message should appear shortly - look for the respond ray id if you need technical help reaching the site. These checks ensure certain words and data on provider pages remain secure.

Combining Lip Flip With Lip Filler Or Other Cosmetic Procedures
If you want both shape refinement and actual volume, combining a lip flip with filler can deliver your desired look. Common sequencing options include:
Filler first, flip second: Place filler to build volume, wait 1-2 weeks for swelling to resolve, then add the flip for border eversion
Flip first, filler second: Let the flip stabilize (about two weeks), then fine-tune with filler
Alternating treatments: Some patients alternate between flips and fillers seasonally based on budget and preferences
Allow at least one week between procedures to avoid overlapping swelling or overcorrection. Build a personalized plan during your consultation based on your anatomy and aesthetic goals.
Frequently Asked Questions About Botulinum Toxin And Lip Flip
Does a lip flip affect kissing or drinking? Many patients experience temporary difficulty drinking through a straw or sealing their lips tightly for the first 3-7 days. Kissing may feel slightly different until muscles adapt. These effects resolve as the treatment settles.
Are results permanent or reversible? Lip flips create a subtle, natural look that is entirely temporary. Results from a lip flip typically last two to five months, then fade completely. If you dislike the outcome, simply wait - the effect will wear off on its own. Lip flips usually last from two to five months before the muscles return to full strength.
How does a lip flip change my smile? A lip flip can reduce a gummy smile by limiting upper lip elevation. It also reveals more of the vermilion, giving the appearance of a slightly fuller smile. Changes are subtle, not dramatic.
What about neuromuscular conditions? Anyone with a neuromuscular disorder such as myasthenia gravis or Lambert-Eaton syndrome should avoid this treatment, as it may worsen existing muscle weakness.
Schedule a Consultation
The best way to determine if a lip flip is the right choice for your face is to schedule a consultation with a qualified provider. Bring a list of your current medications (including supplements), your medical history, and a clear picture of your aesthetic goals.
Whether you want a more subtle result from a flip alone or a combination approach to achieve that plumper pout, an experienced injector can evaluate your anatomy and build a plan that delivers natural looking results tailored to you. Lip flips are considered a quick treatment with no downtime, so most patients can schedule the procedure and return to daily activities the same day.
Frequently Asked Questions
What is a lip flip and how does it work?
A lip flip uses botulinum toxin injections to relax the orbicularis oris muscle around the mouth. This relaxation allows the upper lip to roll slightly outward, revealing more of the pink tissue and creating a subtle enhancement without adding volume.
How long do lip flip results last?
Results typically last between two to five months. Most patients notice initial changes within a few days, with full effects appearing around 7 to 14 days after treatment. Duration varies based on individual metabolism and muscle activity level.
What is the recovery time after a lip flip?
Recovery time is minimal. Most people return to normal activities immediately after treatment. Common temporary effects include mild swelling, redness, and tenderness at injection sites, which typically resolve within about one week.
Who is a good candidate for a lip flip?
Good candidates have an upper lip that tucks inward when smiling or appears thinner during movement. Ideal candidates seek subtle enhancement rather than dramatic volume increase. Those with neuromuscular disorders, active infections, or pregnancy should avoid the procedure.
What is the difference between a lip flip and lip fillers?
A lip flip relaxes muscles to reveal existing tissue without adding volume, while fillers physically inject material to increase lip volume. Lip flips create subtle enhancement through muscle relaxation, whereas fillers provide more noticeable volumization.
Learn more: Body Contouring at Leva Medical