Key Summary
In reviews of square jaw Botox, some people noticed results in 2 weeks, some saw a difference after a month, and others only clearly saw changes after 2 months. On the other hand, I also saw posts from people who didn’t feel any effects, or who were bothered by sunken cheeks, asymmetry, or weaker chewing strength.
On October 15, 2026, I logged in and read 260 posts on the Gangnam Unnie reviews page and 22 posts on the Babitalk procedure reviews page. I didn't just pick posts that said the results were good—I also looked at experiences mentioning no effect, sunken cheeks, asymmetry, and chewing discomfort.
The first thing to look at is why the face looks wider than its volume. When asking about this, you should also check if the sides of the jaw stick out firmly, whether there’s hollowing under the cheeks and cheekbones when relaxed, and if there’s already a noticeable left-right difference, so you can connect reviews to your own face.
| Questions people actually ask a lot | Differences found in 282 cases |
|---|---|
| When will I see the effects? | There were reviews that mentioned 2 weeks, 3 weeks, a month, and 2 months. |
| Can dents form? | It's a mix of current experience, past procedure experiences, and pre-procedure worries. |
| Which one is it, 50 units or 100 units? | You need to ask for the product name, the total for both sides, and the left-right distribution together. |
| Do I need to get it again every few months? | In the reviews where they used numbers, 6 months came up the most with 8 mentions. |
| From when is massages and alcohol okay? | It's a common question on Google, but you can't decide a day just based on reviews. |
Where and how much did you actually read the reviews?
On Gangnam Unnie, I read 260 reviews that were loaded on the screen. Babitok showed 3,953 procedure reviews in the search results, but this time I only read the 22 full posts that appeared on the screen.
I read posts separately about worrying over hollow cheeks and posts by people who actually experienced it. I also divided the posts saying it didn’t work into ones written right after the procedure, ones about previous hospital experiences, and ones observed for over a month.
I didn’t summarize the unit per product, re-treatment timing, or post-treatment precautions in a single sentence in the reviews. I compared the product approval documents, clinical studies, and guidance from dermatologists and hospitals.
What causes my square jaw—muscles, bones, or cheek fat?
The thing Botox directly reduces is the movement of the masseter muscle. If the main reasons your jaw still looks wide even when you relax your face are bone, cheek fat, or sagging skin, your jawline might not turn out as expected even if the masseter shrinks.
One user on Babitalk wrote that since their jawbone was the main issue, the effect on reducing their square jaw wasn’t that big. On the other hand, a user on Gangnam Unnie said that the part they thought was bone was actually muscle, and they felt a big change in their lower face after the treatment. Even with the same square jaw concern, the starting points were different.
When you clench your teeth, you look to see if both masseter muscles protrude the same amount in the same place. When relaxed, you need to check the shadow under the cheekbones, any existing sunken areas in the cheeks, and the skin and cheek fat left around the jawline. Taking photos of both states and showing them during a consultation makes it easy to explain the difference between your normal face and when you clench your teeth.
- When you bite down on this
- Look at where the sides of the jaw stick out and the difference between the left and right.
- When I relaxed my strength
- Check if you can already see sunken cheeks, prominent cheekbones, or sagging jawline.
- When comparing photos
- We look at both the width of the face and the sunken cheeks in photos where the expression, angle, and lighting are the same.
When did the square jaw Botox start showing effects, and what were the reviews from people who said it didn’t work?
On Gangnam Unnie, there were 19 reviews that mentioned 2 weeks or two weeks, 5 reviews that mentioned 3 weeks, and 16 reviews that mentioned a month or 1 month. On Babitalk, out of 22 reviews, I found 3 that mentioned 2 weeks and 2 that mentioned 3 weeks. This number doesn’t mean the effects definitely showed up on that day; it’s just the number of reviews that had that timeframe written in them.
On Gangnam Unnie, there were posts saying people experienced the sugar candy effect for about a week and saw results from week 2. Another user said they felt initial changes in 2–3 weeks and their jawline became more defined in 2 months. You have to separate the injection marks and swelling right after the procedure from the contour changes a few weeks later.
There were 17 cases on the two platforms where the results were described as ineffective or weak. Among them were experiences from previous clinics where the treatment didn’t work, posts where the current procedure had a short follow-up period, and posts saying the effect decreased after a month. You shouldn’t read short-term reviews as final results.
I don’t think research on masseter reduction shows changes happening all at once. Randomized studies using specific products measured muscle thickness at 4, 8, 12, and 16 weeks and saw it gradually decrease until around 12 weeks. You can’t apply these exact numbers to all products and doses, but it does give a reason to compare reviews at the same time points.
| Check point | Things to check when reading reviews |
|---|---|
| Right after the procedure | You can tell if it's just injection marks and swelling or an actual contour change |
| Around two weeks | Record jaw muscle movement, Alice in Wonderland phenomenon, and left-right differences |
| 4 to 12 weeks | Let's look at the jaw width and hollow cheeks together with front and 45-degree photos taken from the same angle |
| When you feel like the effect has worn off | Don't just look at the calendar, write down the previous product, unit, and the time you were most satisfied. |
If I get Botox for a square jaw, can it cause sunken cheeks?
The terms 'cheek hollowing' or 'sunken cheeks' came up 37 times across the two platforms. Looking at the content, it mixed concerns before the procedure, past procedure experiences, and changes that happened after this procedure.
On Babitalk, there were posts saying they originally had little cheek fat and that after the procedure their cheeks became more sunken, so they didn't get it again. On Gangnam Unnie, people shared that after previous procedures their cheeks were very sunken, their jaw made noises when they opened their mouths, the effect was weak, and they felt uncomfortable with asymmetry and hollow cheeks for about 3 months.
I also had a negative experience. I consulted about the amount and placement considering my existing cheek hollows, and there were posts saying it didn’t get worse after the procedure. Instead of just looking for whether cheek hollows appear, you should check if the posts about the face before the procedure, the amount, injection spots, and progress timing are similar to your situation.
Even in studies reviewing masseter treatments, sunken cheeks have been reported, and they explain that facial anatomy and injection sites can affect the results. During consultations, when asking about this, make sure to show not just the jaw muscles but also the shadows under the cheekbones on a relaxed face, already sunken cheeks, and any remaining cheek fat along the jawline.
Are there any reviews saying that the chewing strength gets weaker or that only one side sticks out?
In reviews, people mentioned a decrease in chewing strength, areas that looked bulging like hard candy, and differences between the left and right sides. On Gangnam Unnie, there was a post saying they felt swelling and a drop in chewing strength for about a week, but started seeing results from 2–3 weeks and were satisfied with the results at 3 months.
I’ve had experiences where the raised part like an Al-shaped candy went down after about a week, and also cases where I got additional treatment after checking with the hospital. Taking photos or videos of the raised area and when it started can help the hospital track the progress.
There were 17 Gangnam Unnie reviews mentioning left-right differences. They mix experiences of pre-existing asymmetry, uneven volume adjustments, and new differences noticed after the procedure. Research reviews also reported temporary chewing fatigue, weaker chewing force, asymmetry, and sunken cheeks.
If it becomes hard to breathe, talk, or swallow, this isn’t a symptom you should wait to deal with later. The botulinum toxin product approval documents say to get medical help immediately if these symptoms appear.
| Changes mentioned in the reviews | Things to tell the hospital |
|---|---|
| Weakened chewing strength | Tell me the start date, if it's hard to eat normally, and if there's any difference between the left and right sides |
| One side sticks out when you bite down | Show a relaxed face and a clenched-teeth face at the same angle. |
| The difference in smile corners | Show videos of your usual expressions along with when you’re smiling |
| Difficulty breathing, talking, or swallowing | Don't wait, get treatment right away |
Which should I choose, 50 units or 100 units of jaw Botox?
In the reviews, 50 units came up 12 times, 100 units 9 times, and the term 'dosage' appeared 31 times. But these numbers aren't votes for which dosage is better. The amount mentioned varied depending on the product, muscle size, left-right differences, and previous procedures.
At Gangnam Unnie, I got 100 units when my jaw muscles were bigger, and later I got 50 units, and even had different amounts on each side. Seeing that the dose changed for the same person depending on the timing of the procedure, there's no reason to decide in advance between 50 or 100 units.
Units are the potency measure of the product, and cc is the volume of the diluted liquid. You can't really compare them like the same numbers. The DailyMed approval documents also state that you can't directly compare or convert the units of BOTOX Cosmetic to units of other botulinum toxin products.
| Words written on the estimate | Talking about water again in counseling |
|---|---|
| 50 units of jaw Botox | Is it 50 units total for both sides? |
| 100 Unit Event | Do you use all 100 units of a product on the square jaw? |
| Domestic or imported | What's the exact product name? |
| The same amount on both sides | Why are you using the same amount even though you can see the asymmetry? |
How often did you get Botox for your square jaw?
The most common retreatment interval mentioned in reviews was 6 months. Among the 19 reviews that specified the interval with numbers, 8 said 6 months, 3 said 3 months, 2 each said 4 months and 8 months, and 1 each said 5 months and 1 year. There was also 1 review each that mentioned 3–4 months, 3–6 months, and 5–6 months. One review mentioned that they usually did it every 6 months but got it done this time after just 3 months, so I included it in both intervals.
Out of the 8 cases that mentioned 6 months, 7 said the effects lasted or they were satisfied and got it again. There were posts saying they got it about once every 6 months for around 3 years and the effects lasted, posts saying it lasted about 6 months, and posts saying the effects wore off after 6 months so they got it again.
There were three posts mentioning three months, but two of them were plans to revisit written on the day of the procedure or during the initial follow-up. The remaining one was someone who usually came every six months but felt their muscles again, so they came back after just three months this time. Just because the three-month reviews were the second most frequent doesn’t mean that getting it every three months gave better results.
If we just look at the reviews, most people noticed changes in their face 2–3 months after the first session, and follow-up treatments were most commonly chosen around 6 months, which also had the most positive feedback. If the effects are still there or issues like reduced chewing strength, cheek hollows, or asymmetry persist, it's better to check the current discomfort first before considering additional treatments.
| The spacing mentioned in the review | Number of mentions | What was it about? |
|---|---|---|
| 6 months | 8 cases | Seven cases were about satisfaction, retention, and revisits. |
| 3 months | 3 items | Two were planned for a revisit, and one happened earlier than usual. |
| 4 months | 2 cases | It was a post about it being time for a follow-up procedure or planning the next procedure. |
| 8 months | 2 cases | It was either the first time I got it after 8 months, or the interval they recommended after the first treatment. |
| 5 months, 1 year | One of each | The effect wore off, so I got it again, or it was an experience where I took a long break after the previous procedure. |
| 3–4 months, 3–6 months, 5–6 months | One of each | The review was less about an exact month and more about a range. |
After getting jawline Botox, when did you start massage, drinking, and exercising?
In the searches, people repeatedly asked when they could eat, exercise, or drink alcohol after getting jaw Botox. The American Academy of Dermatology advises not to rub or massage the injection site and to wait 2 hours before doing intense exercises that raise your heart rate. They explain that you can generally go about your daily life right away.
The guidance from UK NHS hospitals is more conservative. It says to avoid intense exercise, drinking, saunas, and hot baths for 24 hours, and to avoid massaging the injection site for 24–72 hours. Since even official guidelines differ in timing, don’t lump things like massage, exercise, and alcohol together—check the instructions from the hospital that did your procedure for each activity.
There aren’t any common fasting rules in the two official guidelines when it comes to meals. But in reviews, some people mentioned that it was hard to chew tough food for a few days. If chewing gets really difficult or uncomfortable during regular meals, don’t just tough it out by changing what you eat—contact the clinic where you had the procedure.
Can I choose a hospital just by looking at the number of reviews and star ratings?
You can't tell how your face will change just by the number of reviews and star ratings. Gangnam Unnie shows over 9,999 reviews, and Babitalk shows 3,953 procedure reviews, but this time I only checked 260 and 22 of the actual posts, respectively. I didn't mix up the total numbers on the screen with the number of posts I read.
The reviews written on the same day, the ones before seeing any effects, the ones where people got Botox along with contour injections or a lift, and the ones that included experiences from previous clinics were all mixed together. For posts about multiple treatments, you can't tell if changes in the jawline are just from the square jaw Botox.
When I look at reviews, I first check if the face shape is similar to mine, if the product name and the total units for both sides are listed, and when it was written after the procedure. To really understand the difference in results, you also need to read posts that mention things like sunken areas, bite strength, and asymmetry along with the positive reviews.
What kind of answer should I get from the consultation?
In the consultation response, it should specifically cover the reasons your face looks wider, the products and units, left-right distribution, possibility of sunken cheeks, when to check the results, and when to contact if anything feels uncomfortable.
- The main reason your face looks wide
- I need an explanation that distinguishes between the masseter muscle when clenching, and the bones, cheek fat, and existing hollow in the cheeks when relaxing.
- Product name and total units on both sides
- You need the product name, the total for both sides, and the amounts for the left and right sides separately.
- Areas where you need to look more at the hollows in your cheeks
- There should be an explanation pointing out the existing hollows and cheekbone protrusion from the front and at a 45-degree angle with relaxed facial muscles.
- The time to compare the results
- The dates to look at the photos again should be set specifically, like two weeks or four weeks later, not right after the procedure.
- Criteria for deciding the next treatment
- You need to look at how much the masseter has firmed up compared to the set number of months, the chewing function, and any remaining hollows in the cheeks.
- The standard for contacting when it's uncomfortable
- You need contact information and consultation guidelines for when you experience one-sided protrusion, facial expression changes, or difficulty chewing during meals.
So, how should we read reviews after getting jaw Botox?
Reviews saying it was good and reviews saying there was hollowness in the cheeks aren't really contradictory—they just reflect different starting faces and procedure conditions. Don't just look at changes in the jawline; you should also consider cheek hollowness, shadows under the cheekbones, bite strength, and asymmetry.
Don't pick a number like 50 units or 100 units, or 3 months or 6 months first. You need to connect the exact product name, total units on both sides, the condition of your masseter and cheek fat, and the point you were most satisfied with in previous treatments during consultation so that you can use the review questions for your choice.
This survey looked at 260 cases from Gangnam Unnie and 22 cases from Babitalk to find what people actually asked and experienced, and we checked the timing of effects, side effects, units per product, and post-procedure precautions separately using approval documents, studies, and academic guidelines. The reviews themselves aren't a diagnosis or prescription, and if you have urgent symptoms, see a doctor before relying on online reviews.
Frequently asked questions
When does the effect of square jaw Botox start to show?
In the reviews, people mentioned noticing changes at 2 weeks, 3 weeks, 1 month, and 2 months. Since changes were seen from 4 to 12 weeks even in random studies of certain products, it's better to compare photos taken from the same angle over a few weeks rather than just looking at one photo right after the procedure.
Are there people for whom square jaw Botox doesn't work?
There were 17 reviews on the two platforms saying it was ineffective or weak. Since these include experiences where the main cause was bones or cheek fat, posts with short follow-up periods, and posts that had weak effects from previous procedures, you should first check whether the masseter actually sticks out when asking about it.
If I get Botox for a square jaw, will it make my cheeks look hollow?
There were reviews saying people actually experienced cheek depressions and also reviews saying their existing cheek depressions didn't get worse. Since sunken cheeks have been reported in research reviews too, show the areas that are already sunken and the shadows under the cheekbones before the procedure on a relaxed face.
What should I do if my jaw sticks out like a lollipop after getting jawline Botox?
In reviews, there were experiences where people felt better after about a week and experiences where they contacted the hospital for additional treatment. When you ask about it, make sure to keep photos or videos of where it pops up and when it started, and instead of deciding on additional treatment yourself, show it to the clinic that did the procedure first.
Which is better for square jaw Botox, 50 units or 100 units?
You can't decide which one is better just based on the number of reviews. First, ask if the total includes both sides, what the exact product name is, and if the left and right are evenly distributed. Also, keep in mind that if the products are different, you can't directly convert the units.
How often do you need to get botox for a square jaw?
In reviews that mentioned the retreatment interval in numbers, 6 months came up the most with 8 cases, and out of those, 7 were about satisfaction, maintenance, or coming back. People usually check their facial changes 2–3 months after the first treatment, and according to reviews, the most common time to go for a follow-up treatment was around 6 months. If the effects are still there or issues like chewing discomfort and sunken cheeks continue, it's better to check the current condition before getting more treatment.
After getting jawline Botox, when is it okay to start exercising, drinking, or doing lymphatic massage?
Official guidelines vary. The American Academy of Dermatology says not to rub the injection site and to wait 2 hours before intense exercise, while the UK NHS advises avoiding intense exercise and alcohol for 24 hours and massages for 24–72 hours. Make sure to check your clinic’s instructions for each activity.
Where should I start when looking at reviews for jawline Botox?
First, check if the face shape is similar to yours, if the product name and total units for both sides are listed, and when the review was written after the procedure. Reviews after multiple procedures make it hard to tell the results of jaw Botox alone. It's better to read progress reviews that mention jawline changes, cheek hollows, chewing strength, and left-right differences rather than just looking at star ratings.
Sources and review dates
- Square jaw Botox review search screen (Gangnam Unnie)Checked on
- Square jaw Botox treatment review search screen (Babitok)Checked on
- BOTOX Cosmetic Full Prescribing Information (DailyMed)Checked on
- Use of AbobotulinumtoxinA for Cosmetic Treatments in the Neck, and Middle and Lower Areas of the Face: A Systematic Review (PMCID PMC7926328)Checked on
- Efficacy and Safety of a Novel Botulinum Toxin A for Masseter Reduction: Randomized Dose-Finding Study (PMID 33347002)Checked on
- Botulinum Toxin Type A for Masseter Muscle Prominence in Asian Populations (PMCID PMC10045881)Checked on
- Botulinum toxin therapy: FAQs (American Academy of Dermatology)Checked on
- Botulinum Toxin A Injections in the Head and Neck Region (Lancashire Teaching Hospitals NHS Foundation Trust)Checked on
Editorial responsibility and relationships
Gangnam Beauty Check has no connections—financial, sponsorship, or advertising—with Gangnam Unnie, Babitalk, the clinics mentioned in reviews, or botulinum toxin products. User reviews were used just to look at differences in questions and experiences, and medical explanations were cross-checked with separate sources. No medical professionals reviewed this.
Medical review: None
This article is for information and does not replace an individual diagnosis or medical consultation.
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