Botox for Bunny Lines: How It Works and What to Expect
Updated: Nov 2
Key Takeaways
Bunny lines are the fine diagonal creases that appear on both sides of the nose, mostly when you smile, laugh, or scrunch. They are caused by the nasalis muscle contracting over time.
Botox relaxes this muscle so the skin folds less during movement, softening the lines without affecting your natural expressions.
Only a few units per side are needed, and the injection points are shallow and precise, placed directly into the nasalis muscle.
The whole procedure takes a few minutes with no anesthesia and no downtime. Mild redness may occur but fades within a few days.
Visible smoothing starts within days, reaches full effect in one to two weeks, and lasts roughly three to four months before a top-up is needed.
Table of Contents
What Are Bunny Lines?
How Does Botox Treat Bunny Lines?
How Many Units and What Dose Are Used?
Where Are the Injection Points?
What to Expect and Who It Suits
Precision Makes All the Difference
Forehead lines and crow’s feet are commonly discussed wrinkles, but the minor creases on the sides of the nose are often overlooked until they become more pronounced. Bunny lines, though seemingly small, can contribute to an aged or tense appearance of the nose, particularly in photographs. Botox for bunny lines is a quick, targeted treatment that softens these wrinkles without surgery or downtime, and it is one of the most straightforward uses of Botox in facial aesthetics.
What Are Bunny Lines?
Bunny lines are fine diagonal wrinkles that appear on the upper sides of the nose, usually when you smile, laugh, or scrunch. They get their name because the scrunching motion resembles the way a rabbit twitches its nose. The main muscle responsible is the nasalis, which sits along the bridge of the nose and contracts during certain facial expressions.
In younger skin, bunny lines only show during movement and disappear once the face relaxes. Over time, as the skin loses elasticity and the muscle continues to contract with every expression, these creases can become etched in and visible even at rest. Botox injections in adjacent areas such as the forehead or brow region can also make them more noticeable as nearby muscles may overcompensate.
How Does Botox Treat Bunny Lines?
Botox works by temporarily blocking the nerve signals that tell the nasalis muscle to contract. When the muscle relaxes, the skin above it creases less, and the bunny lines soften. The treatment does not freeze the face or remove the ability to make natural expressions. It simply reduces the intensity of the muscle movement that causes the wrinkles. Because bunny lines are dynamic wrinkles caused by muscle activity rather than volume loss, Botox is a precise fit for treating them.
The full impact will be noticeable in roughly one to two weeks, but initial results should emerge within a few days. To maintain the results, a touch-up session is required every three to four months.
How Many Units and What Dose Are Used?
Treating bunny lines requires only a small amount of Botox. The typical Botox dose for bunny lines is just a few units per side of the nose, making it one of the lightest treatments in terms of volume. The exact number depends on:
The strength of the nasalis muscle
How deep the wrinkles are
Whether you have had Botox before
Conservative doses are typically used for initial treatments. Your doctor will then review the results during a follow-up appointment and make any necessary adjustments. Beginning with a subtle approach prevents excessive relaxation and ensures a natural result.
Where Are the Injection Points?
The Botox injection points for bunny lines sit in the nasalis muscle on each side of the nose. Injections are kept shallow and precise, targeting the specific area where the muscle contracts during scrunching. Most treatments use only a small number of injection sites, mapped to how your nose moves when you make the expression.
Placement matters. If the injection is placed too far down or too wide, it can spread into nearby muscles like the levator labii, which controls the upper lip. This could temporarily affect the smile, which is why an experienced injector who understands the anatomy of this area is essential.
What to Expect and Who It Suits
Botox treatment for bunny lines is one of the fastest procedures in cosmetic dermatology. Here is what to expect:
The procedure takes only a few minutes and requires no anesthesia.
There is no real downtime. You can return to normal activities right away.
Mild redness or small bruises may appear briefly at the injection sites but typically fade within a few days.
Avoid rubbing or massaging the treated area for the first 24 hours so the Botox stays where it was placed.
The treatment is a good fit for people who:
Notice prominent wrinkles on the sides of the nose when smiling and want subtle softening without surgery.
Are looking for a quick, low-commitment treatment that delivers a natural-looking improvement.
Want a balanced result by treating bunny lines alongside other areas like the forehead or crow's feet.
Precision Makes All the Difference
The injector’s skill is crucial for achieving natural-looking bunny lines. The treatment area is confined, the dosage is minimal, and each injection spot must align with your facial movements. That level of precision is exactly what Astrid Anti-Aging Studio is known for. Each Botox injection in Bangkok is placed by experienced dermatologists who assess your facial anatomy before deciding on the approach.
If bunny lines have been on your mind, a quick consultation is the best place to start. Visit our aesthetic clinic in Bangkok to find out whether this treatment is the right fit for you.
References:
Botulinum Toxin. Retrieved 10 June 2026, from https://www.plasticsurgery.org/cosmetic-procedures/botulinum-toxin
Where Should We Inject Botulinum Toxin for the Bunny Lines? Retrieved 10 June 2026, from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12828243/
Frequently Asked Questions About Botox for Bunny Lines
Q: Does bunny line Botox hurt?
A: Most people find it very tolerable. The needle used is extremely fine, and the treatment area is small. You may feel a slight pinch during the injection, but the procedure is over in a few minutes and no anesthesia is needed.
Q: Can Botox for bunny lines affect my smile?
A: When performed by an experienced injector, it should not. The risk comes from placing the injection too wide or too deep, which could temporarily affect a nearby muscle that controls the upper lip. Proper technique and precise placement minimize this risk.
Q: How soon will I see results after bunny line Botox?
A: You may notice the lines starting to soften within a few days. The full effect typically becomes visible in about one to two weeks, and results last approximately three to four months before a follow-up treatment is needed.
Q: Can bunny lines get worse after Botox in other areas of the face?
A: Yes, this can happen. When Botox is used on the forehead or between the brows, the nasalis muscle sometimes compensates by working harder, making bunny lines more noticeable. This is why many doctors treat bunny lines at the same time as nearby areas to keep the result balanced.
