Most people notice bunny lines in photographs before they notice them in the mirror. These fine, diagonal creases on the sides of the nose appear when you smile, laugh, or squint, and many clients tell us they seem to set deeper each year. Bunny lines respond well to Botox, but only when the injection is aimed at the right structure. This guide explains how bunny lines Botox in Aurora is planned, why the old approach of injecting straight into the crease is being questioned, and who should think twice before booking.

Table of Contents

• Quick Takeaways
• What Bunny Lines Are and Why They Form
• Why the Inject-the-Line Approach Is Being Questioned
• Where Botox Actually Goes for Bunny Lines
• What a Bunny Lines Appointment Looks Like in Aurora
• Bunny Lines Botox Compared With Other Options
• Results, Timing and Maintenance
• Who Should Skip Bunny Lines Botox
• Frequently Asked Questions
• About Zahra Erfan
• Business Ownership
• Contact Details
• Address / Service Area
• Disclaimer
• References

Quick Takeaways

Key Insight	Explanation
Bunny lines are a movement problem first	The nasalis muscle contracts when you smile, laugh, or squint, and that repeated contraction is what creases the skin.
The crease is not always the right target	Newer anatomy and ultrasound research challenges the idea that injecting straight into the line is always the best plan.
Skin quality can be a separate issue	As collagen declines, skin becomes less elastic, so some clients need a skin-focused treatment alongside Botox.
Mapping comes before injecting	Your provider should watch how your nose moves at rest and in expression before deciding where product goes.
Expect gradual, temporary results	Botox takes several days to show its full effect and wears off over months, so maintenance should be planned rather than improvised.
Ask where the product is going	Placement and amount are the biggest variables in outcome, and a good provider can explain both in plain language.

What Bunny Lines Are and Why They Form

Bunny lines are the fine, oblique wrinkles that appear on the upper sides of the nose when you smile, laugh, or squint. They get their name from the way a rabbit’s nose crinkles when it wiggles, and the comparison is close enough that clients usually recognize their own lines immediately.

The main driver is the nasalis muscle. Anatomical research describes these wrinkles as the result of contraction of the transverse part of the nasalis muscle, sometimes assisted by the levator labii superioris alaeque nasi. Each time that muscle shortens, the overlying skin folds, and over years of repetition the fold becomes a line.

Why the lines deepen over time

Repeated movement explains why bunny lines first appear, but it does not fully explain why they become harder to ignore later. As skin loses collagen, it becomes less elastic and holds creases longer after the face relaxes. In practice, we see two patterns: lines that only show when a client smiles, and lines that stay faintly visible at rest. The second group usually needs a broader plan than Botox alone.

Dynamic lines versus etched lines

A dynamic line appears with movement and fades when the face is still. An etched line stays visible at rest because the skin has begun to hold the fold. Botox works best on dynamic lines because it reduces the movement that creates them. Etched lines may soften with treatment over time, but they rarely disappear from muscle relaxation alone.

Why the Inject-the-Line Approach Is Being Questioned

For years, the standard way to treat bunny lines was to inject botulinum toxin directly into the crease. The logic was simple: if a wrinkle forms there, the overactive muscle must sit right beneath it. That assumption is now being tested. Researchers Kyu-Ho Yi and Soo-Bin Kim, writing in the Journal of Cosmetic Dermatology in January 2026, point to cadaveric dissections and ultrasound analyses that challenge this long-standing view and may explain why in-the-line injections sometimes give inconsistent results.

What the anatomy research is asking clinicians to do

The practical message is that the muscle and the wrinkle do not always line up neatly. A clinician who looks only at the surface may place product where the line is most visible rather than where the muscle is most active. The research does not turn bunny lines into a simple rule, but it does push providers to think about anatomy before they reach for the syringe.

Why in-the-line injections can disappoint

A common mistake is to treat the crease as the whole problem. Injecting into a fold can soften the skin’s surface, yet it may leave the underlying movement largely untouched. That is when clients come back saying the line still shows when they laugh. We would rather plan around the mechanism than chase the mark on the skin.

A bunny line is usually a movement problem before it is a skin problem. Treating the wrong target is one of the most common reasons results disappoint.

No single study settles every question, and practitioners still vary in technique. What has changed is the expectation that a good plan starts with anatomy, not with the wrinkle alone.

Where Botox Actually Goes for Bunny Lines

Targeting the right structure starts with a conversation about how you use your face. Your provider should ask you to smile, laugh, and squint, then watch which parts of your nose move and how strongly. A plan built on that movement is more likely to address the cause than one drawn from a single photo.

Mapping the muscle before the needle

In practice, mapping means watching your face in motion and feeling for the areas that tighten. The goal is to identify the muscle responsible for the fold so the treatment is directed there. Clients often find this step reassuring, because they can see that the plan is based on how they move rather than on a template.

Why conservative planning matters near the upper lip

The nose sits close to the muscles that lift the upper lip and shape your smile. If product spreads beyond its intended area, it can affect how you smile or how your upper lip moves. That is why we prefer a conservative approach that leaves some movement intact rather than aiming for a perfectly still nose.

Pro tip: Ask your provider to show you the movement they plan to treat, and ask them to explain why that movement is the target. A provider who can answer both questions clearly has usually thought through the plan.

Placement is also where many outcomes are decided. Two clients with similar wrinkles can respond very differently if one is treated along the crease and the other is treated for the muscle beneath it.

What a Bunny Lines Appointment Looks Like in Aurora

Skin Excellence Medispa is located at 14845 Yonge Street, Unit 301, in Aurora, Ontario, and serves clients from across the Greater Toronto Area. Whatever distance you travel, a sound appointment follows the same logic: understand your goals, examine your face in motion, and agree on a plan before anything is injected.

What to tell your provider before treatment

Tell your provider about any blood thinners, supplements that affect bleeding, previous aesthetic treatments, and any neuromuscular condition. Let them know if you are pregnant, planning a pregnancy, or breastfeeding. These details shape whether treatment is appropriate and how cautious the plan should be.

Aftercare in the first day

Most people leave with little more than a small bump or a pinprick mark. Common advice is to avoid rubbing the area, avoid lying flat for several hours, and skip strenuous exercise for the rest of the day. Your provider may give instructions based on your specific plan, and those should take priority over any general guidance.

The appointment is also the right time to ask about realistic outcomes. A good consultation should leave you with a clear sense of what will soften, what may remain, and what would call for a different treatment.

Bunny Lines Botox Compared With Other Options

Bunny lines can be approached in several ways, and the right choice depends on what is causing the line. The table below compares the approaches we most often discuss with clients, along with the trade-off that matters most for each.

Approach	What It Targets	Trade-off to Know
Botox placed directly into the crease	The visible skin fold	Results can be less predictable, because the fold may not be the main source of movement.
Botox planned around the nasalis muscle	The movement that creates the line	Requires careful mapping and conservative dosing to limit effects on nearby muscles.
Skin-focused treatments such as medical facials, micro-needling, or laser	Texture, tone, and collagen in the skin	Does nothing to muscle movement, so lines that form with expression may persist.

The comparison shows why combining approaches is sometimes the right call. Botox addresses movement, while skin-focused treatments address texture and tone. A client with mostly dynamic lines may do well with Botox alone, while a client with etched lines and visible skin laxity may need both.

Choosing between treatment paths

A useful starting question is whether your lines appear mainly when you move. If they do, Botox is usually the first option to discuss. If the skin looks thin, dull, or creased even at rest, adding a skin treatment may give you a more complete result.

Results, Timing and Maintenance

Botox does not work instantly. Most clients notice early changes over the first few days, with the full effect developing over roughly two weeks. Judging the result before that point leads to unnecessary worry or an early request for more product.

How long results usually last

The effect of Botox wears off gradually as the muscle slowly regains its movement. For bunny lines, that usually means several months rather than a year. How long your result lasts depends on your muscle strength, how often you move your face, and how your plan was designed.

Why maintenance should be planned

Scheduled maintenance tends to work better than waiting until the line returns in full. Many clients find that movement comes back gradually, which makes it easier to keep results consistent. Taking photos at the same angle and in the same light before each visit helps you and your provider see what is changing.

Pro tip: Take a photo of your nose while you smile, from the same distance and under the same light, before your appointment and at each follow-up. Comparing those images is far more useful than judging from memory.

Who Should Skip Bunny Lines Botox

Botox is not right for everyone who has nose wrinkles. Our position is simple: if you are pregnant, breastfeeding, or have a neuromuscular condition, you should discuss it with a qualified healthcare professional before any treatment. Those cases are about safety, not aesthetics.

When Botox alone will not solve the problem

If your bunny lines are present at rest and look like folds that have settled into the skin, Botox alone is unlikely to be the full answer. Relaxing movement will not reverse fine creasing that the skin has already started to hold. A combined plan or a different treatment is usually more realistic.

When you want no change in expression

Some clients want a completely still nose and no change in how they smile. That expectation can conflict with a conservative plan that protects the upper lip. We would rather say so up front than promise a result that puts your smile at risk.

Frequently Asked Questions

Is bunny lines Botox painful?

Most people describe a brief pinch or pressure during treatment, and discomfort usually settles quickly afterward. Your provider can discuss comfort measures before you begin.

How long does bunny lines Botox last?

Results generally last several months, though the exact duration varies between clients. Maintenance timing is best planned during your consultation rather than on a fixed calendar.

Can Botox for bunny lines change my smile?

It can, if product spreads toward the muscles that lift the upper lip. A conservative plan that accounts for your smile is the best way to reduce that risk.

Is Botox the only option for nose wrinkles?

No. Skin-focused treatments can address texture and tone, and some clients benefit from combining approaches. The best route depends on whether your lines appear mainly with movement or also at rest.

How soon will I see results?

Early changes often appear within a few days, and the full effect generally develops over about two weeks. Judging the result before then is not a reliable guide.

Who is a good candidate for bunny lines Botox?

Adults whose bunny lines appear mainly with smiling, laughing, or squinting, and who have discussed their health history with a provider, are usually the best candidates. A consultation is the only reliable way to confirm that.

What has your experience been with bunny lines or nose wrinkles, and what question would you most want answered before booking?

References

• Journal of Cosmetic Dermatology study on where to inject botulinum toxin for bunny lines
• London clinic guide to treating bunny lines with Botox
• Allergan product listing for specialty products including BOTOX Cosmetic