Lip Flip vs Lip Filler vs Lip Lift: Choosing by Anatomy, Not by Trend

The video is fifteen seconds long. A woman purses her lips, a needle appears for a blink, and a caption promises a fuller mouth with ‘no filler.’ As of September 2026, clips like that have pushed the lip flip from a niche injector’s trick into one of the most searched cosmetic procedures online, alongside the older questions about lip filler and the newer curiosity about the surgical lip lift.

What the videos leave out is the part that actually determines whether any of these will look good on you: the shape of your upper lip at rest, how much of it disappears when you smile, and the length of the skin between your nose and your lip. Those three measurements matter more than any before-and-after reel.

This piece walks through what each procedure physically does, how strong the evidence behind it really is, what can go wrong, and how to think about the decision the way a careful clinician would: from the anatomy outward.

What exactly does a lip flip do?

A lip flip is an injection of botulinum toxin type A, the same neuromodulator used for frown lines, placed into the upper edge of the orbicularis oris. The orbicularis oris is the ring of muscle that circles your mouth and lets you purse, kiss and say the letter P. Botulinum toxin works by blocking the release of acetylcholine, the chemical messenger that tells a muscle fiber to contract. With a few fibers along the lip border temporarily quieted, the lip stops tucking inward and rolls, or ‘flips,’ slightly outward.

The key word is slightly. Nothing is added to the lip. The volume you see is the same volume that was already there, now displayed a few millimeters more generously because the border sits a touch higher. In someone whose upper lip curls under when they talk or smile, that redistribution can look like a real change. In someone whose lip is simply thin, the effect can be hard to spot at all.

Because the change is muscular rather than structural, it is most visible in motion. The classic candidate is a person whose upper lip almost vanishes when they grin, or who shows a band of gum above the teeth. Relaxing the muscle pulling the lip up and in lets more pink lip stay in view during a smile.

Two more facts shape everything that follows. First, the effect is temporary; the nerve endings sprout new connections and normal movement returns over weeks. Second, using botulinum toxin in the lip is not one of its approved indications. Regulators in the United States have cleared it for specific facial lines, not for the lips, so a lip flip is an off-label use. That is legal for a licensed clinician to offer, and common, but it means the decision, the technique and the amount rest entirely with the person holding the syringe and the patient in the chair.

Lip flip vs filler: two different mechanisms, not two versions of one thing

People search ‘lip flip vs filler’ as though they were rival brands of the same product. They are not. One relaxes a muscle; the other adds material.

Modern lip fillers are almost all made of hyaluronic acid, a sugar molecule your own skin produces that binds water and gives tissue its plumpness. Manufacturers cross-link it into a gel that holds its shape for months before enzymes in the body gradually break it down. Injected into the body of the lip, the border, or the vertical lines above it, the gel physically occupies space. That is why filler can change the size of a lip, correct a side that is smaller than the other, or sharpen a border that has softened with age, none of which a lip flip can do.

Filler has a second property that clinicians value: it can be dissolved. Hyaluronidase, an enzyme that digests hyaluronic acid, can reverse an unwanted result or treat a complication within hours. Botulinum toxin has no antidote; you simply wait for it to wear off.

The two also differ in where they act. A flip is confined to a thin strip of muscle at the vermilion border, the line where pink lip meets skin. Filler can be placed in several planes and zones, which is both its versatility and its risk, since the arteries that feed the lip run through those same planes.

Some clinicians combine them, using filler for volume and a flip to keep the enhanced lip from curling under. Whether that pairing makes sense depends on the starting anatomy, and it is a conversation to have with a clinician who has examined your lips at rest and in motion, not a package to request because a video suggested it.

What is a lip lift, and why is it the only option in this trio that lasts?

A lip lift is surgery. The most common version, often called a subnasal or bullhorn lift for the shape of the incision, removes a thin strip of skin just under the nose. Closing the gap pulls the upper lip upward, shortening the philtrum, the vertical groove between the base of the nose and the top of the lip, and turning a little more of the pink lip outward for good.

That permanence is the whole appeal, and the whole caution. Filler dissolves, toxin wears off, but a strip of removed skin does not grow back. The trade is a scar that sits in the crease at the base of the nostrils. In well-selected patients and skilled hands it fades to a faint line over roughly a year; in others it stays visible, widens, or pulls the nostril base subtly out of shape.

A lip lift addresses a problem that neither injectable truly solves: a long philtrum. Some people are born with a long distance between nose and lip; almost everyone gains a few millimeters with age as the tissue stretches and the lip thins. Filler placed into a long upper lip often makes it look heavier and longer, the so-called duck effect. A flip everts the border but cannot shorten skin. Only excision changes that measurement.

There are variations. A corner lip lift removes small triangles at the outer edges to counter a downturned mouth. An Italian lip lift uses two smaller incisions under each nostril to reduce visible scarring. Each has its own recovery, typically a week or two of swelling and sutures, and each is a permanent structural change that deserves a longer decision process than an injectable ever would.

What changed recently to put lip flips in the spotlight

Three developments explain the surge, and none of them is a breakthrough trial.

The first is platform dynamics. Short-form video rewards fast, dramatic transformations, and the lip flip is fast: a handful of pinpoint injections, no swelling worth filming, and a result visible within a week. Major health systems have responded with plain-language patient pages, and the Cleveland Clinic’s treatment overview now notes that the procedure is off-label and typically lasts only a couple of months, a corrective to the impression that it is a filler substitute.

The second is the maturing of the filler market. Since 2015 several hyaluronic acid gels have received specific US approval for lip augmentation and for the fine lines around the mouth, each backed by controlled pivotal trials in which participants were followed for months and scored by blinded evaluators. That regulatory trail gives filler a firmer evidence base than the flip, which has never gone through a comparable approval process for the lip.

The third is the broader arrival of new botulinum toxin products. The last few years have brought additional neuromodulator brands to market in the United States, all approved for frown lines between the brows. None carries a lip indication. More brands have meant more marketing of toxin generally, and clinicians report more patients arriving with the lip flip specifically in mind, often as a first cosmetic procedure.

The freshest change, then, is not scientific but cultural: a low-commitment, low-cost-of-entry treatment has met an audience that trusts video over consultation. The evidence for the flip has not moved much. The demand has. That mismatch is exactly why the choice deserves the anatomy-first framing this article argues for, and why the NHS and other public health bodies continue to stress checking a practitioner’s qualifications before any injectable, however minor it appears on screen.

Which lip anatomy actually suits a lip flip?

Ask an experienced injector who gets the best flip results and the answer is remarkably consistent: people with a decent amount of lip that hides itself.

The first sign is inversion. Look at your upper lip in a mirror, then smile broadly. If the pink portion thins to a line or tucks under so the teeth seem to sit directly beneath the skin, the orbicularis oris is pulling the border inward. Relaxing that muscle can let the lip stay presentable in motion. If the lip is already thin at rest, there is little to unfurl, and a flip may produce a change nobody but you can detect.

The second sign is a gummy smile, the medical term being excessive gingival display. When more than about three to four millimeters of gum shows above the upper teeth during a full smile, the elevator muscles, chiefly the levator labii superioris, are lifting the lip high. Small injections at the upper lip and sometimes near the base of the nose can soften that lift. This is the version of the flip with the most consistent visible payoff, because it changes something people notice in photographs.

The third is the philtrum. A short to average philtrum with an inverting lip is ideal. A long philtrum limits the benefit because the border has a long way to travel and the muscle can only be relaxed so far before function suffers.

Who it does not suit is just as important. People who rely on fine lip control, such as musicians who play brass or woodwind instruments, singers, and public speakers, may find even a mild loss of pursing strength unacceptable. Anyone with a neuromuscular condition, a history of swallowing problems, or who is pregnant or breastfeeding should not be treated, and the clinician needs to know about all of that before any injection is planned.

Which lip anatomy suits filler better than a flip?

Filler earns its place when the problem is quantity or geometry rather than movement.

Start with volume. If the lips are thin at rest and stay thin regardless of expression, no amount of muscle relaxation will change what is visible. Hyaluronic acid gel adds tissue where tissue is missing. The commonly cited proportion that many clinicians aim for is an upper lip roughly two-thirds the height of the lower lip when viewed from the front, though this is an aesthetic convention grounded in expert consensus, not a measurement with health significance.

Then asymmetry. A lip that is fuller on one side, or a border that dips on the left and not the right, can be balanced with small, targeted placements. A flip acts on both sides in a way that is hard to fine-tune to a single deficient spot.

Age-related change is filler’s third home. With time the vermilion border blurs, the philtral columns that run from nose to lip flatten, and vertical lines appear above the lip. Gel placed precisely along the border can redefine it; a small amount in the columns can restore their ridge. A flip does none of that, and a lip lift shortens skin without redrawing the border.

Filler is also the reversible option. Hyaluronidase can dissolve the gel if the result is unwanted or if a blood vessel is compromised, which makes it, paradoxically, the safer of the two injectables to reconsider afterward even though its complication profile is more serious at the moment of injection.

The candidates who should think hardest are those with a long philtrum or a lip that already projects forward. Adding volume to a long lip can accentuate the length; adding it to a projecting lip can push toward the overfilled look that drives many people to have their filler dissolved. Here a clinician may recommend the lift instead, or advise against treatment altogether.

Who is really a candidate for a lip lift?

The lip lift is the answer to a measurement, and a surgeon will usually reach for a ruler before offering it.

The distance from the base of the nose to the top of the pink lip in a younger adult typically falls in the range of roughly eleven to fifteen millimeters, with variation by sex, ethnicity and facial proportion. When that distance runs noticeably longer, whether by nature or by decades of gradual stretching, the upper lip can look flat and the teeth hide even in a relaxed smile. Removing a few millimeters of skin restores show of both lip and teeth.

This is why surgeons describe the ideal candidate in structural terms: a long philtrum, a thin or inverted upper lip that filler has failed to improve or would make heavier, and a clear understanding that the result is permanent. Age itself is not a criterion. Some people in their twenties have long philtrums; some in their sixties have short ones.

Skin quality and healing history matter enormously. People who form thick or raised scars, who smoke, or who have conditions that impair wound healing face a higher chance of a visible line. The incision sits at a natural junction between nose and lip precisely to hide it, but it is still a scar on the center of the face.

Nasal anatomy is the quieter consideration. Because the skin is pulled upward toward the nostrils, a poorly planned lift can flatten the nostril sills or widen the base of the nose. Surgeons who do these regularly plan the excision to respect those curves.

Finally, a lip lift is for people who have thought about it for a while, not for someone reacting to a trend. Unlike a flip that fades or a filler that dissolves, there is no undo. That is a reason to seek out a board-certified facial plastic or plastic surgeon and to ask to see healed results at a year, not at a week.

Lip flip vs lip filler vs lip lift: side-by-side comparison

Laid out together, the three procedures answer different questions. The table below summarizes what each does, how long it lasts, and where the risks concentrate.

Feature	Lip flip	Lip filler	Lip lift
What it is	Botulinum toxin relaxes the upper lip muscle	Hyaluronic acid gel adds volume and shape	Surgery removes a strip of skin under the nose
Changes volume?	No, redistributes existing lip	Yes	Modestly, by everting the lip
Changes philtrum length?	No	No	Yes
Typical duration	About 2 to 3 months	About 6 to 18 months depending on product and placement	Permanent
Reversible?	Only by waiting	Yes, with hyaluronidase	No
Downtime	Minimal; small bumps for an hour or so	Swelling and possible bruising for several days	Sutures about a week; swelling for weeks; scar matures over a year
Best-fit anatomy	Lip that inverts when smiling; mild gummy smile	Thin lips at rest; asymmetry; blurred border	Long philtrum; lip that filler makes heavier
Main risks	Weak pursing, straw and whistling difficulty, asymmetric smile	Lumps, prolonged swelling, vascular occlusion	Visible scar, nostril distortion, numbness
Regulatory status (US)	Off-label use of an approved drug	Several gels approved specifically for lips	Surgical procedure; no device approval applies
Evidence quality	Case series and expert opinion	Controlled pivotal trials for approval	Retrospective surgical series

Two patterns stand out. Reversibility and duration run in opposite directions: the most reversible option, filler, sits in the middle for longevity, while the least reversible, surgery, lasts longest. And the evidence quality tracks regulation rather than popularity. The most-searched procedure of the three is the least formally studied.

That is not an argument against the flip. It is an argument for matching expectations to what is known, and for choosing the tool that fits the measurement rather than the mood.

How long does a lip flip last compared with filler and a lift?

Duration is where the lip flip disappoints most people who arrive expecting a filler-like commitment.

Botulinum toxin in the forehead typically holds for three to four months. In the lip the effect is shorter, generally around two to three months, and often the visible change is gone before the eight-week mark. The orbicularis oris is a small, highly active muscle that you use every time you speak, eat or drink, and active muscles recover faster. The amounts used are also deliberately tiny, because too much would interfere with those same functions. Less toxin in a busier muscle means a briefer effect.

Onset is also gradual. Expect little change for the first two or three days, a noticeable difference by about a week, and the full effect at roughly two weeks. Anyone judging a flip the day after treatment will judge too early.

Hyaluronic acid filler lasts longer because it is a physical material, not a signal. Manufacturer trial data and clinic experience put lip filler at roughly six to twelve months for most products, with some newer, more firmly cross-linked gels retaining visible effect toward eighteen months. The lip is a mobile, well-perfused area, so filler here breaks down faster than the same gel in the cheek. Individual metabolism, the amount placed and how deeply it sits all shift the timeline.

A lip lift does not wear off, but the appearance evolves. Swelling exaggerates the result for the first several weeks; the scar is pink and then pale over about a year; and the lip continues to age with the rest of the face. Surgeons describe the result as permanent because the excised skin does not return, not because the face freezes in time.

Planning around these timelines matters. A flip timed two weeks before an event is reasonable. Filler wants at least two weeks for swelling to settle. Surgery wants months.

What are the downsides of lip flips? The side effects nobody films

Lip flip side effects are usually mild and always temporary, but they are real, and they follow directly from the mechanism. You have weakened a muscle you use hundreds of times a day.

The most common complaints cluster around function. Drinking through a straw can feel clumsy. Whistling may become impossible for a few weeks. Words that need a firm seal of the lips, particularly P, B and M sounds, can come out slightly softened, which is why speakers and singers are counseled carefully. Some people notice they dribble a little when drinking from a wide cup or spit inadvertently when pronouncing certain consonants. Kissing can feel different.

Appearance-related effects come next. If the toxin diffuses unevenly, one side of the lip may relax more than the other, producing a smile that lifts higher on one side. A flip placed too generously can flatten the upper lip’s natural curve or make the lip look elongated and stiff rather than fuller. Because there is no reversing agent, these settle only as the toxin wears off, typically within weeks.

Injection-related effects are the same as any needle: brief stinging, tiny bumps that resolve within an hour, occasional pinpoint bruising, and a small risk of infection at the site.

Serious reactions are rare but carry a regulatory warning. All botulinum toxin products in the United States carry a boxed warning about the possibility of toxin spreading beyond the injection site, causing generalized weakness, double vision, drooping eyelids, hoarseness, trouble swallowing or trouble breathing. These are far more associated with larger therapeutic doses than with cosmetic use, but they are the reason cosmetic injections should only be performed by someone trained to recognize and manage them.

Anyone weighing a flip should ask themselves one concrete question: could I tolerate a few weeks of a slightly less capable mouth? For many people the answer is yes. For a flautist or a trial lawyer it may not be.

Risks of lip filler and lip lift surgery, in plain language

Filler carries the most serious acute risk of the three, and surgery carries the most lasting one.

Common filler effects are predictable: swelling for two to five days that can be dramatic in the lips, bruising, tenderness, and occasionally small lumps that soften as the gel integrates. Cold compresses, avoiding strenuous exercise for a day and skipping alcohol and blood-thinning supplements around treatment reduce bruising, though anyone on a prescribed anticoagulant should not stop it for a cosmetic procedure and should discuss timing with the prescriber.

The complication that trained injectors fear is vascular occlusion. The superior and inferior labial arteries run through the lip, and filler injected into or against one can block blood flow. Signs appear within minutes to hours: pain out of proportion to the injection, skin that blanches white then turns dusky purple or mottled, and later blisters or breakdown. Treated promptly with hyaluronidase and other measures, tissue usually recovers; left untreated, it can scar. Extremely rarely, filler that reaches arteries connecting to the eye has caused vision loss. These events are uncommon, but they are why the NHS and other bodies recommend only medically qualified, insured practitioners with emergency protocols.

Delayed problems include nodules that appear weeks to months later, sometimes after an infection or vaccination, and migration of gel above the lip border into the skin, producing a shelf-like appearance. Both are treatable, again usually by dissolving.

Lip lift risks are surgical. Infection, bleeding and delayed healing occur in a small minority. A scar that widens, thickens or stays red is the most frequent lasting concern. Numbness of the upper lip is common early and usually fades. Asymmetry, distortion of the nostril base and an overcorrected lip that shows too much gum are technical complications that are difficult to revise. The decision-making bar is therefore higher, and the value of seeing a surgeon’s healed results at twelve months is correspondingly greater.

What the evidence actually says about the lip flip, graded honestly

For a procedure this popular, the published evidence for the lip flip is thin, and it helps to be specific about what kind of thin.

Strongest tier, randomized controlled trials: none of any size have tested the lip flip against placebo or against filler for lip appearance. The randomized evidence for botulinum toxin is robust, but it comes from trials in frown lines, crow’s feet and forehead lines, and from therapeutic uses such as chronic migraine and muscle spasticity. Those trials establish that the drug reliably relaxes the muscle it is injected into for roughly three to four months and that cosmetic doses are generally well tolerated. They do not measure lip eversion.

Middle tier, observational data: the lip flip appears in small case series and in slightly larger studies of botulinum toxin for gummy smile, where photographs before and after show reductions in gum display of a few millimeters lasting a few months. These are real findings, but the studies are small, mostly unblinded, and rarely include a comparison group.

Lowest tier, expert opinion: the bulk of published guidance on where to inject, how to select patients and what to expect comes from consensus statements and review articles written by experienced injectors. That is valuable clinical knowledge, but it is opinion, not trial data.

Filler sits on firmer ground. Each hyaluronic acid gel approved for lip augmentation in the United States went through controlled, evaluator-blinded pivotal trials with hundreds of participants followed for months, which is why regulators could state indications and durations. Safety data on vascular events come from registries and case reports rather than trials, so the rate estimates are approximate.

Lip lift evidence is surgical: retrospective series from individual practices reporting satisfaction, philtrum shortening and complication rates. Consistent across series, but not randomized and subject to the bias of surgeons reporting their own results.

The honest summary: the flip’s mechanism is well established, its lip-specific outcomes are described but not rigorously measured, and no head-to-head data tell you which procedure produces the better result for a given face.

Common myths about lip flips, fillers and lifts, corrected

Viral content has generated a set of durable misconceptions. Here are the ones clinicians hear most, and what the evidence says instead.

‘A lip flip is a natural alternative to filler.’ It is a different drug with a different mechanism, not a gentler version of the same thing. Nothing is added; the lip is repositioned. Someone who wants a larger lip will not get one from a flip.

‘It lasts as long as botulinum toxin anywhere else.’ The lip muscle is small and constantly active, so effect typically fades in around two to three months, shorter than the forehead’s three to four.

‘You can see the result immediately.’ Toxin takes days to begin working and about two weeks to peak. Day-one videos are showing swelling or camera angles, not the drug.

‘Filler stretches your lips out permanently.’ Hyaluronic acid is absorbed over months. There is no good evidence that a modest amount leaves lips looser than before. What can happen is that repeated large volumes over years accumulate, since gel may persist longer than people assume; imaging studies have found filler present well beyond its advertised lifespan.

‘Filler is safe because it dissolves.’ Dissolvability makes complications treatable; it does not prevent them. Vascular occlusion happens at the moment of injection and needs urgent recognition.

‘A lip lift is only for older people.’ It is for a long philtrum at any age. Some of the most satisfied patients are younger adults for whom filler had repeatedly produced a heavy, elongated look.

‘The more you inject, the better the flip.’ Beyond a small amount, additional toxin does not produce more eversion; it produces a stiff, functionally weak lip. Restraint is the technique.

‘It is so minor that anyone can do it.’ The lip flip is an off-label use of a prescription drug with a boxed warning, injected millimeters from arteries that other procedures have shown can be damaged. Qualifications matter regardless of how small the needle looks on screen.

When to see a doctor after a lip flip, filler or lip lift

Most people who have one of these procedures never need urgent care. Knowing the exceptions in advance is what separates an inconvenience from a lasting problem. Every concern below should go first to the clinician who treated you, who knows exactly what was used and where; if that person cannot be reached, seek emergency care.

After lip filler, treat these as emergencies within the first hours to days:

• Pain that is severe or increasing rather than settling, especially if it feels out of proportion to the procedure.
• Skin that turns white, blotchy, grey or dusky purple, or develops a lace-like pattern extending beyond the lip.
• Any change in vision, eye pain, or a new drooping of the eyelid.
• Sudden severe headache, confusion or weakness on one side of the body.
• Blistering, open sores or darkening skin over the following days.

After a lip flip, seek prompt medical assessment for:

• Difficulty swallowing, choking on liquids, or any sense of trouble breathing.
• Hoarseness, slurred speech beyond mild softening of consonants, or generalized muscle weakness.
• Double vision or drooping eyelids, even though the injection was nowhere near the eye.
• Signs of infection at the site: spreading redness, warmth, pus or fever.

After a lip lift, contact the surgeon for bleeding that soaks dressings, wound edges that separate, spreading redness or discharge, fever, or numbness that persists well beyond the expected early weeks.

Non-urgent but worth a visit: lumps in filler that have not softened after a month, asymmetry after a flip that persists past three weeks, or a scar that is thickening or staying red at several months. All of these have management options, and none should be handled by a second injector without records of the first treatment.

Anyone with a history of a neuromuscular disorder, a bleeding disorder, active cold sores, pregnancy or breastfeeding should raise it before treatment, because each changes whether a procedure is appropriate at all. That judgment belongs to the treating clinician, not to a video.

Frequently asked questions

What exactly does a lip flip do?

A lip flip relaxes the upper edge of the ring-shaped muscle around the mouth with a small amount of botulinum toxin, so the lip stops curling inward and rolls slightly outward. It adds no volume; it simply shows more of the lip you already have, particularly when you smile or talk. Effects begin within days, peak at about two weeks and fade over roughly two to three months.

How long does a lip flip last?

Most people see the effect for about two to three months, and often the visible change is gone by eight weeks. That is shorter than botulinum toxin lasts in the forehead because the lip muscle is small, works constantly and is treated with a deliberately tiny amount to protect speech and drinking. Filler typically lasts six to eighteen months, and a lip lift is permanent.

How much does a lip flip cost?

We do not publish price figures, because cost varies widely by region, practitioner qualifications and how much product is used, and any number would be misleading. More useful questions to ask at a consultation are who will perform the injection, what their medical qualifications are, what happens if the result is uneven, and how often you would need repeat treatment to maintain the effect.

What are the downsides of lip flips?

The main downsides are functional and temporary: difficulty using a straw, whistling or pronouncing P and B sounds crisply, occasional dribbling, and sometimes an uneven smile if the toxin spreads asymmetrically. There is no reversing agent, so an unwanted result lasts until the drug wears off. Rare but serious spread of toxin causing swallowing or breathing difficulty carries a regulatory boxed warning and needs immediate care.

Lip flip vs filler: which gives fuller lips?

Filler gives fuller lips. Hyaluronic acid gel physically adds volume, sharpens the border and can correct asymmetry, while a lip flip only repositions the lip you already have. If your lips are thin at rest, a flip will produce little visible change. If they are reasonably full but tuck under when you smile, a flip may be enough. A clinician assessing your lips in motion can tell which applies.

Can a lip flip fix a gummy smile?

It can reduce one, often meaningfully. A gummy smile occurs when muscles lift the upper lip high enough to expose several millimeters of gum. Small injections that relax those elevators let the lip sit lower during a full smile. Small observational studies show reductions of a few millimeters lasting a few months. Severe gum display related to jaw or tooth position may need dental or surgical assessment instead.

Are lip flip side effects permanent?

No. Because botulinum toxin works by temporarily blocking nerve signals to the muscle, every effect, wanted or unwanted, resolves as new nerve connections form over weeks to a few months. Asymmetry, weak pursing or a stiff-looking lip all fade on the same timeline. The exception is any serious spread of toxin causing swallowing or breathing difficulty, which requires urgent medical attention rather than waiting.

Is a lip lift better than filler for a long upper lip?

For a genuinely long philtrum, the skin between nose and lip, surgery is the only option that shortens it. Filler placed into a long upper lip often makes it look heavier and longer, and a flip cannot remove skin. The trade-off is a permanent scar at the base of the nose and a real recovery period, so the decision deserves a consultation with a board-certified surgeon and a look at healed results.

Can you combine a lip flip with lip filler?

Some clinicians do, using filler for volume and a flip to prevent the enhanced lip from curling under. Whether it helps depends on your starting anatomy, and there are no comparative trials showing the combination beats either alone. Because the two act differently and carry different risks, the pairing should be planned by one clinician who has examined your lips at rest and in motion, not requested as a package.

Who should not get a lip flip?

People with neuromuscular conditions, a history of swallowing or breathing problems, known allergy to botulinum toxin products, active infection or cold sores at the site, and those who are pregnant or breastfeeding are generally advised against it. Musicians who play wind or brass instruments, singers and professional speakers may find even mild loss of lip control unacceptable. The treating clinician makes the final judgment after a full history.

References

• Cleveland Clinic: Dermal Fillers
• MedlinePlus: Botox
• NHS: Dermal fillers

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.