The “11 lines” are the two vertical creases that show up between your eyebrows when you frown, squint, or concentrate hard on something. Dermatologists call them glabellar lines, named for the glabella, the smooth patch of skin between your brows and just above your nose. They’re one of the most requested Botox treatment areas anywhere, and also one of the most misunderstood, because the line between “a bit of muscle relaxation” and “I don’t recognize my own expression” feels closer here than almost anywhere else on the face.
Botox has been used for glabellar lines for over two decades now, and it remains one of the most extensively studied cosmetic applications of botulinum toxin type A anywhere in the medical literature. That track record is part of why it’s usually the first thing people ask about when they come in for a consultation about the lines between their brows, ahead of fillers, peels, or anything else.
At Rejuvenation Med Clinic, our 11 lines Botox treatment is offered as part of a broader menu of Botox services across the face. This guide covers what actually happens during treatment, how the numbers around units, timing, and duration tend to play out, when Botox alone isn’t quite enough, and what a reasonable, individualized assessment looks like before you commit to anything.
Related Service: 11 Lines Botox at Rejuvenation Med Clinic
What are 11 lines, and why do they show up between the brows?
The 11 lines are formed mainly by two small muscles: the corrugator supercilii, which pulls the eyebrows together and down, and the procerus, which sits closer to the bridge of the nose and pulls the inner brow downward. Every time you frown, squint into the sun, read something confusing, or just concentrate, those muscles contract and the skin above them folds. Do that enough times over enough years and the fold stops fully relaxing when your face is at rest. That’s roughly the difference between a “dynamic” line, which only appears with movement, and a “static” line, which is visible even when your face is doing nothing at all.
Genetics plays a real role in how early and how deeply these lines set in. Some people have naturally more active corrugator muscles, thinner skin over the glabella, or less collagen density in that specific spot, and they’ll notice 11 lines in their late twenties or early thirties. Others barely develop them at all into their fifties. Sun exposure and smoking both accelerate the process by breaking down collagen and elastin faster than they’d otherwise degrade, which is part of why the same two lines can look dramatically different in severity between two people of a similar age.
| Feature | Dynamic 11 lines | Static 11 lines |
|---|---|---|
| When visible | Only during frowning, squinting, or concentrating | Visible even when the face is fully relaxed |
| Underlying cause | Active muscle contraction folding the skin | Repeated folding plus collagen and elastin loss over time |
| Typical response to Botox alone | Usually softens significantly, often close to smooth | Softens, but a visible groove can remain, especially if deeply etched |
| When filler is sometimes added | Rarely necessary | Sometimes considered to fill a persistent static groove after Botox has relaxed the muscle |
That distinction matters more than most marketing pages let on. If your 11 lines only show up when you’re actively frowning, Botox by itself is likely to do most of the work. If you can already see a groove in the mirror with a completely neutral expression, it’s worth having an honest conversation about expectations before you book, because muscle relaxation alone may soften but not fully erase a line that’s had years to etch itself in.
How Botox actually works on the muscles behind 11 lines
Botox is a purified form of botulinum toxin type A that temporarily blocks the release of a chemical messenger called acetylcholine at the junction between nerve and muscle. Without that signal, the corrugator and procerus muscles can’t contract as forcefully, so the repetitive folding that creates and deepens the 11 lines is interrupted. According to Cleveland Clinic, “Botox blocks nerve signals to muscles. As a result, injected muscles can’t contract (tense up),” which is the same basic mechanism whether the treatment area is the glabella, the forehead, or crow’s feet.
This isn’t a new or experimental use of the drug. Botulinum toxin type A’s approval for treating the lines between the eyebrows was a genuine turning point for the entire cosmetic injectable industry, and it remains one of the most heavily researched cosmetic indications for the toxin in the medical literature, reviewed extensively in dermatology journals over the past two decades. A 2010 review in the Indian Journal of Dermatology described how cosmetic use of botulinum toxin “skyrocketed” following its approval for glabellar lines specifically, noting that its applications have since expanded to cover the forehead, crow’s feet, chin, neck, and beyond. In other words, this is one of the most studied and predictable uses of Botox, not a newer or less proven one.
The effect isn’t permanent, and that’s actually the point. Nerve-muscle connections regenerate over a period of months, at which point the muscle regains its normal contraction strength and the treatment needs to be repeated to maintain results. Nobody is left with a permanently frozen glabella after a single round.
11 lines compared to other Botox-treated areas
The glabella is one of several muscle groups Botox is commonly used on, and it’s worth knowing how it compares to the others, partly because a lot of people end up treating more than one area in the same appointment.
| Area | Muscles involved | What it treats | Typical unit range |
|---|---|---|---|
| 11 lines / glabellar lines | Corrugator supercilii, procerus | Vertical lines between the brows | 10 to 30 units |
| Forehead lines | Frontalis | Horizontal lines across the forehead | Typically treated alongside the glabella to avoid an uneven brow |
| Crow’s feet | Orbicularis oculi | Fanning lines beside the outer eyes | Varies by side and smile intensity |
| Bunny lines | Nasalis | Diagonal lines across the nose bridge, often noticed when treating the glabella | Small doses, sometimes added when glabellar Botox unmasks them |
That last row is worth a second look. Bunny lines sometimes only become noticeable after glabellar Botox, because the nasalis muscle can compensate for a now-relaxed corrugator and start scrunching the nose more than it used to. It’s a known phenomenon, not a complication, and it’s one more reason a full facial assessment at your consultation matters more than treating a single line in isolation.
How many units of Botox does treating 11 lines typically take?
Most patients require somewhere in the range of 10 to 30 units for the glabellar complex specifically, with the exact number depending on how strong the corrugator and procerus muscles are, how deep the existing lines have become, and the desired outcome. Someone with a naturally strong frown and years of deep dynamic movement will generally need more than someone with a milder, more recently developed line. This is not a number you should try to estimate for yourself from an article; it’s something your injector determines by watching you frown, squint, and relax during the assessment, and it’s exactly the kind of decision that needs an individualized, in-person evaluation rather than a generic formula.
If you’re combining glabellar treatment with the forehead or crow’s feet in the same visit, which a lot of people do, the total unit count for the appointment will naturally be higher. Some people combine upper-face Botox with treatment for vertical platysmal bands in the neck during the same visit, since it is the same product injected in a different location. There’s a reasonable logic to treating the upper face as a connected system rather than one line at a time, since the muscles all interact with each other, but that’s a conversation to have with your injector rather than something to plan out on your own beforehand.
What actually happens during a Botox appointment for 11 lines
The appointment itself is short. After a consultation where your injector reviews your medical history, current medications, and goals, and watches how your face moves when you frown and relax, the treatment area is cleaned and the injections are given directly into the corrugator and procerus muscles using a very fine needle. Most people describe each injection as a quick pinch rather than significant pain, and numbing cream generally isn’t necessary, though some clinics offer it for particularly needle-averse patients. The injections themselves typically take a matter of minutes once the assessment portion is done.
You’ll be asked to avoid lying flat and to skip vigorous exercise for a period after treatment, and most clinics recommend not rubbing or massaging the treated area for the rest of the day, since pressing on it can theoretically encourage the product to migrate toward nearby muscles you weren’t trying to treat, like the ones controlling your eyelid. None of this requires you to clear your schedule. Most people go straight back to work or the rest of their day.
Timeline: when will you actually see results?
This is one of the most common points of confusion, because people sometimes check the mirror the next morning expecting a dramatic change and don’t see one yet. According to Cleveland Clinic’s own patient guidance, “most people notice the desired effects around the third or fourth day,” with “full results visible within 10 to 14 days.” That two-week mark is really the honest point to judge your results, not day one or day three.
A quieter side note worth mentioning: some people notice a very mild, temporary headache in the first day or two after treatment, which typically resolves on its own without needing anything beyond a normal over-the-counter pain reliever if it’s bothersome at all.
How long do 11 lines Botox results actually last?
Most people can expect results in the glabellar area to last somewhere around three to four months before the muscle activity gradually returns and the lines start to reappear with movement. Cleveland Clinic’s guidance notes a broader general range for Botox overall, stating that “within three to six months after Botox therapy, toxins wear off and muscles regain movement,” and individual results genuinely do vary within that window based on metabolism, muscle strength, activity level, and how the product was dosed.
Something clinics don’t always say out loud: with consistent, repeated treatment over a few years, some patients find their lines take slightly longer to fully return each time, likely because the muscle has partially “forgotten” its strongest habitual movement pattern. That’s not guaranteed for everyone, and it’s not a reason to overtreat, but it’s a real pattern some long-term patients and injectors describe.
Aftercare: what to do (and skip) in the days after treatment
The aftercare window for glabellar Botox is short and mostly about avoiding things that could encourage the product to spread beyond the intended muscles. Standard guidance across the industry, and consistent with what’s noted in our own service page’s FAQ, includes avoiding blood thinning medications and alcohol in the 24 hours before treatment to reduce bruising risk, staying upright rather than lying flat for a few hours immediately afterward, skipping strenuous exercise for the rest of the day, and not massaging, rubbing, or applying heavy pressure to the treated area.
| Normal, expected reaction | Contact your provider promptly |
|---|---|
| Mild redness or a small bump right at the injection site, gone within an hour or two | Drooping of the eyelid or brow that doesn’t improve after several days |
| Slight bruising, which can take several days to fade like any bruise | Difficulty closing one or both eyes fully |
| A mild, brief headache in the first day or two | Trouble swallowing or breathing (rare, but requires urgent attention) |
| A feeling of tightness or heaviness in the treated area for a day or so | Signs of infection: increasing redness, warmth, or discharge at an injection site |
Makeup can generally go back on once any pinpoint marks at the injection sites have settled, usually the same day, though it’s worth asking your injector for their specific guidance since practices vary slightly. Most people are entirely comfortable being seen in public within a few hours of treatment.
Botox versus dermal filler for 11 lines: when is filler part of the conversation?
Botox addresses the muscle movement that creates 11 lines. It does not add volume or fill a groove that’s become etched into the skin over years. For dynamic lines that disappear when your face is at rest, that distinction rarely matters, because relaxing the muscle is usually enough on its own. For deeper, static lines that are visible even at rest, some patients and injectors discuss adding a small amount of hyaluronic acid dermal filler into the groove itself, after Botox has had time to work, as a way of physically softening what muscle relaxation alone couldn’t fully smooth out.
This isn’t a decision to make on your own from a blog post, since the glabellar area sits close to blood vessels that require real anatomical knowledge and caution when filler is involved. It’s a genuinely individualized call that depends on how deep the line is, how your skin responds to Botox alone, and a proper in-person assessment of your specific anatomy.
Can Botox completely get rid of deep 11 lines?
Honestly, not always, and it’s worth saying that plainly rather than promising a result that may not be realistic for every case. For lines that are still mostly dynamic, meaning they soften or disappear when your face relaxes, Botox alone often gets very close to a smooth result. For lines that have been etched in for years and remain visible even at complete rest, Botox will usually still improve the appearance meaningfully by relaxing the muscle pull, but a faint groove can persist, and that’s when a combination approach or additional sessions over time becomes part of a realistic conversation rather than a guarantee made upfront.
Can Botox prevent 11 lines from getting worse?
This is one of the more genuinely useful things about starting Botox before lines become deeply set. By reducing how forcefully the corrugator and procerus muscles contract over time, consistent treatment can slow the rate at which a dynamic line becomes a static, permanently visible one. It’s not a guarantee, and it doesn’t stop the broader effects of aging, sun exposure, or genetics on skin quality, but a fair number of people in their late twenties and early thirties choose to start treatment specifically as a preventive measure rather than waiting until lines are already well established.
Who is a good candidate for 11 lines Botox?
Generally, adults with visible dynamic lines between the brows caused by repeated frowning, squinting, or concentrating, who are in good general health and have realistic expectations about what muscle relaxation can and can’t do, tend to be reasonable candidates. People who want to soften the appearance of the glabella without eliminating all facial expression, and who understand the treatment is temporary and needs to be repeated, are typically well suited to it.
When Botox for 11 lines is not the right first step
There are situations where a consultation should lead to a “not yet” or a referral rather than a booking, and a responsible provider will say so. This includes anyone who is pregnant or breastfeeding, since Botox hasn’t been established as safe in those circumstances and is generally avoided. It also includes people with certain neuromuscular conditions, such as myasthenia gravis or Eaton-Lambert syndrome, where botulinum toxin can interact seriously with existing muscle weakness, and anyone with an active skin infection or significant inflammation at the intended injection site, where treatment should wait until it clears. People with unrealistic expectations about achieving a completely frozen, expressionless glabella, rather than a softened, more relaxed one, are also better served by a longer conversation before treatment than by an immediate injection.
None of this is meant to be alarming. It’s the same kind of individualized screening that happens before any medical aesthetic treatment, and a referral back to your doctor or a “let’s wait and reassess” from your injector is not a failed consultation. It’s the process working the way it’s supposed to.
Combining 11 lines Botox with other treatments
A lot of people treating the 11 lines end up addressing more than one area in the same visit, since the muscles of the upper face work together rather than in isolation. Common pairings include the forehead and crow’s feet in the same session, as noted above, along with dermal filler in the cheeks or under-eye area for people looking at overall facial rejuvenation rather than one specific line. For anyone weighing Botox against Dysport, both are botulinum toxin products with broadly similar mechanisms and timelines, though there are some differences in formulation and dosing; our guide on Dysport versus Botox goes into that comparison in more depth if you’re deciding between the two.
It’s also worth knowing that Botox has legitimate medical uses well beyond wrinkle treatment. It’s used for excessive sweating, for jaw tension through masseter Botox, and for chronic migraine prevention through Botox for migraines, among other applications; our broader overview of medical uses of Botox covers the full picture if the cosmetic-versus-medical distinction interests you. A few people also come in initially asking about frown lines more broadly, since the term gets used loosely to cover forehead lines, glabellar lines, and lines around the mouth together, so it’s worth clarifying with your injector exactly which lines you mean.
Cost considerations for 11 lines Botox in Toronto
We’re not going to invent a specific price here, because Botox pricing depends on unit count, and unit count depends entirely on your individual anatomy and goals, which can only be properly assessed in person. What we can say generally is that cost tends to scale with the total number of units used, so treating the glabella alone typically costs less than a session that also addresses the forehead and crow’s feet together.
| Factor | How it affects cost |
|---|---|
| Total units required | More units for stronger muscles or deeper lines generally means a higher total cost |
| Number of areas treated | Combining the glabella with the forehead or crow’s feet increases the total unit count and cost |
| Injector experience | More experienced injectors may charge differently per unit than newer providers |
| Product used | Botox and Dysport are priced somewhat differently per unit, though they aren’t directly interchangeable unit-for-unit |
For a general sense of how Botox pricing works in Toronto beyond just this one treatment area, our existing guide on how much Botox costs in Toronto breaks down the unit-based pricing model in more detail, and our finance page outlines payment options if that’s useful for planning.
Choosing a qualified injector for 11 lines Botox
The glabella sits close enough to the muscles controlling eyelid position that injection technique and placement genuinely matter here more than in some other treatment areas. An experienced injector who understands facial anatomy will place the product precisely into the corrugator and procerus muscles while avoiding the levator palpebrae superioris, the muscle that lifts the eyelid, which is exactly the kind of precision that prevents the “surprised eyebrow” or drooping lid look that gives Botox a bad reputation when it’s done carelessly. At Rejuvenation Med Clinic, Botox treatment is provided under the clinical oversight of our medical director, and administered by trained injectors who assess each patient’s individual anatomy before recommending a treatment plan. You can learn more about our clinical team on our our team page.
A proper consultation should include watching you frown, squint, and raise your eyebrows so your injector can map exactly where your specific muscles are strongest, rather than applying a one-size-fits-all injection pattern. If a provider skips that step entirely, that’s worth asking about before you proceed.
A quick, honest note before you book
People sometimes come in worried that any Botox near the eyebrows will leave them looking permanently surprised or unable to express anything. That’s a fair worry, and it usually comes from seeing a handful of overdone results online rather than the far more common, much less dramatic outcome most people actually walk away with. A well-dosed, well-placed treatment on dynamic 11 lines tends to look like a rested, slightly softer version of your own face, not a different face. If that’s not the look you’re picturing when you imagine your own results, it’s worth saying so clearly at your consultation, since dosing can be adjusted toward a more conservative, natural-movement-preserving approach for exactly that reason.
Frequently asked questions
A few of these overlap with general Botox questions rather than 11 lines specifically; our broader injectable treatment FAQ covers those in more depth.
What causes 11 lines between the eyebrows?
Repeated contraction of the corrugator supercilii and procerus muscles, which happens every time you frown, squint, or concentrate, gradually folds the skin between the brows. Over time, combined with normal collagen and elastin loss, this dynamic line can become visible even at rest.
How many units of Botox do you need for 11 lines?
Most patients need somewhere between 10 and 30 units for the glabellar complex specifically, depending on muscle strength, line depth, and desired outcome. The exact number is determined during an in-person assessment rather than estimated in advance.
How long does it take to see results from 11 lines Botox?
Most people notice initial softening around day three or four, with full results typically visible within 10 to 14 days.
How long does 11 lines Botox last?
Results in the glabellar area generally last around three to four months, though the broader range for Botox overall is closer to three to six months depending on the individual.
Is Botox for 11 lines painful?
Most people describe each injection as a quick pinch. Numbing cream is generally not necessary, though it can be requested for anyone particularly needle-averse.
Can Botox completely remove deep 11 lines?
Not always. Dynamic lines that disappear at rest usually respond very well to Botox alone. Deeper, static lines that remain visible at rest may only partially improve, and some patients discuss adding dermal filler to the groove itself as a complementary step.
What is the difference between 11 lines and forehead lines?
11 lines, also called glabellar lines, are the vertical lines between the eyebrows caused by the corrugator and procerus muscles. Forehead lines are the horizontal lines higher up, caused by the frontalis muscle. They’re often treated together, but they involve different muscles and sometimes different unit ranges.
Can Botox prevent 11 lines from getting worse?
Yes, to a meaningful degree. Reducing repeated muscle contraction over time can slow how quickly a dynamic line becomes permanently etched, which is why some people start treatment preventively before lines are fully set in.
What are the side effects of Botox for 11 lines?
Common effects include mild redness, bruising, or a brief headache in the first day or two, all of which typically resolve on their own. Less common effects include eyelid or brow drooping if the product spreads beyond the intended muscles, which is why injector precision matters in this specific area.
Who should not get Botox for 11 lines?
People who are pregnant or breastfeeding, anyone with certain neuromuscular conditions such as myasthenia gravis, anyone with an active infection at the injection site, and anyone expecting a completely frozen, expressionless result rather than a softened one should discuss this carefully with a provider before proceeding, and may be advised to wait or reconsider.
Can I combine 11 lines Botox with forehead or crow’s feet treatment?
Yes, this is a common combination, since the muscles of the upper face work together. Combining areas increases the total unit count and, generally, the total cost of the appointment.
Is Botox or filler better for 11 lines?
Botox addresses the muscle contraction that creates the lines and is the standard first approach. Filler doesn’t relax muscle movement but can add volume to a persistent static groove after Botox has had a chance to work, and the two are sometimes used together for deeper, long-established lines.
How should I prepare for a Botox appointment for 11 lines?
Avoid blood thinning medications and alcohol for 24 hours before treatment to reduce bruising risk, and let your injector know about any medications, supplements, or medical conditions during your consultation.
What should I avoid after Botox for 11 lines?
Avoid lying flat, strenuous exercise, and rubbing or massaging the treated area for the rest of the day. Most people can return to normal activities, including wearing makeup, within a few hours.
Will Botox for 11 lines make me look like I can’t show emotion?
Not if it’s dosed and placed conservatively. A well-executed treatment on dynamic 11 lines typically softens the line while preserving natural brow movement and expression, rather than eliminating it entirely.
Why do some people get bunny lines after treating their 11 lines?
When the corrugator muscle is relaxed, the nasalis muscle across the nose bridge can sometimes compensate and become more active, creating diagonal lines that weren’t previously as noticeable. This is a known pattern rather than a complication, and small doses can be added to the nose if it becomes bothersome.
Does Botox for 11 lines have any medical uses beyond cosmetic treatment?
The glabellar treatment itself is cosmetic, but botulinum toxin more broadly has genuine medical applications, including chronic migraine prevention, excessive sweating, and jaw tension from clenching, among others.
How often do I need to repeat 11 lines Botox to maintain results?
Most people repeat treatment roughly every three to four months as the effect gradually wears off, though this varies by individual and some people find their results last slightly longer with consistent, repeated treatment over time.
Can I wear makeup right after Botox for 11 lines?
Generally yes, once any pinpoint marks at the injection sites have settled, which is usually the same day. It’s worth confirming with your specific injector, since guidance can vary slightly between providers.
Is a consultation necessary before booking 11 lines Botox?
Yes. A proper consultation includes watching your muscle movement while frowning and relaxing, reviewing your medical history, and confirming you’re a reasonable candidate, none of which can be done accurately without seeing you in person.
Related concern: the outer corners of the eyes are another common upper-face area people ask about alongside the 11 lines. Our crow’s feet Botox guide covers that area specifically, including realistic unit ranges and how it’s sometimes treated in the same visit as glabellar lines.
