Nasal flare Botox is the injection of Botulinum Toxin Type A into the small muscles on both sides of the nostrils. These muscles are the ones that lift or flare the nostrils when you smile, laugh, or breathe heavily.
This treatment relaxes those muscles, reducing nostril flaring. It helps the nose look slimmer, the nostrils less wide, and overall improves facial balance, especially when speaking or showing facial expressions.
Wide nostrils can be caused by several factors. The main reasons include:
How to know if you have wide nostrils:
Botox works on the muscles that pull the nostrils outward. When these muscles contract, the nostrils lift and spread, like when breathing deeply or making expressions.
Once the Botox fully takes effect, these muscles relax. This stops them from pulling the nostrils outward, making the nose look slimmer and more defined. It naturally reduces the flared appearance of the nose.
See the illustration below for a simple explanation:
You’ll see the most visible results within 2 to 4 weeks after the injection.
The effect usually lasts around 3–4 months. Since it's injected into small muscles, the results may last a bit shorter with about 3 months on average.
Note: You can get nose Botox at least 2 weeks after a nose surgery. Always inform your doctor about any past facial procedures.
Both Botox and surgery can help reduce wide nostrils, but they solve different problems and give different results. The better choice depends on your specific concern. Let’s look at it from two angles:
Nasal flare Botox relaxes the muscles that pull the nostrils outward. The result is a naturally slimmer nose and narrower nostrils. Best for people with nostril flaring due to muscle movement.
Nasal wrinkle Botox removes excess skin or cartilage to permanently change the nose structure. It’s better for those with thick skin or large cartilage that can’t be improved with Botox.
Nasal flare Botox Pros: No surgery, no downtime, no scars. Visible results in about 1 month.
Cons: Temporary results. Not effective for wide nostrils caused by bone or cartilage.
Nasal wrinkle Botox Pros: Long-term structural change. Good for thick tissue or large cartilage.
Cons: Requires 5–7 days of recovery. Risk of scarring. More expensive. Difficult to correct if results are unsatisfactory.
Note: Already had nose wing surgery but still see nostril flaring? A doctor can evaluate whether Botox might help fine-tune the result.
Nasal flare Botox and nasal wrinkle Botox have different purposes and injection techniques:
Both treatments can be done together to improve the nose shape from both the front and side views, making it slimmer and more balanced.
Reviews after nasal flare and nasal wrinkle Botox (from MEGA CLINIC clients):
Besides the nostril sides and bridge, there’s another area where Botox can be used which is called nasal lifting Botox.
This technique involves injecting small amounts of Botox in a straight line along the nose bridge, from top to bottom. It helps smooth the surface of the nose and gives it a more refined shape. The result is a more balanced and natural-looking nose line.
At MEGA CLINIC, we only use genuine, imported Botox from 6 leading brands approved by the Thai FDA, with proper Thai labeling on every bottle:
All Botox is kept in temperature-controlled storage. You can request to check the product before injection in every case.
To shape and refine the nose properly, doctors often recommend treating all 3 main spots using about 50 units in total.
If you only treat one spot, such as just nasal flare or just the wrinkle, the dose is usually no more than 25 units per spot.
The number of units depends on your muscle condition, how severe the issue is, and the doctor’s evaluation. At MEGA CLINIC, your facial structure will be carefully assessed first.
If you’re concerned about bruises or visible needle marks since the nose area has thin skin and visible veins, here are some prep tips:
Note: Any small bruises from the procedure will fade naturally within 7–14 days. You can use makeup or bruise-reducing cream in the meantime if needed.
After getting nasal flare Botox, you can wash your face, apply skincare, and even use nose pore strips as usual. Just avoid pressing or squeezing pimples hard around the injected area especially in the first 3 days.
Can I be in the sun after Botox? Normal sunlight won’t break down Botox, but the skin on your nose is sensitive. Strong sun for long periods can cause redness, irritation, or peeling. Avoid harsh sunlight if possible.
Can I eat BBQ or hot pot after Botox? Yes, you can eat hot foods like BBQ, shabu, or soup as usual. The temperature of food or steam isn’t high enough to affect Botox injected into the muscles.
But during the first week, avoid direct heat near your face — for example, don’t lean too close to a grill or steam your face.
The nose has many nerves, so nose contouring Botox tends to sting more than other areas. It feels like a quick pinch or tightness, but it’s tolerable. The doctor assistant will apply a cold pack before injecting. If you’re worried, you can ask for numbing cream at no extra cost.
Nasal flare Botox is a safe and effective choice for reducing nostril flare naturally. Even though the procedure is quick and doesn’t need recovery time, it requires precision, skill, and proper use of genuine, high-quality Botox.
If you’re looking for a trusted clinic, MEGA CLINIC uses only 100% authentic Botox with official import and FDA approval. Our experienced doctors specialize in facial shaping and will design a treatment plan that fits your face structure.
You can get nasal Botox every 3–4 months, depending on when the effect starts to wear off. If your nostrils begin to flare again, you can return to the clinic for a doctor’s evaluation.
Note: Avoid getting Botox too frequently. It may increase the risk of Botox resistance in the long term.
Nose contouring Botox doesn’t change your nose structure permanently like surgery. Instead, it temporarily improves the shape by relaxing the small muscles that affect movement or flaring. This makes the nose look more refined and balanced, but it doesn’t change the overall size or make the nose higher like rhinoplasty would.
MEGA CLINIC has multiple locations covering key areas in Bangkok and nearby provinces:
For more details or to book an appointment, message our admin team via LINE Official: @megaclinic (with @). Click the green “Add LINE” button at the bottom of the screen.
