What’s the Difference, and What Matters Most at The Naderi Center?
Botulinum toxin injections remain the #1 non-surgical cosmetic treatment in the United States. Patients consistently ask:
- Which neurotoxin lasts the longest?
- Why is Botox more expensive in some offices?
- Does Daxxify really last longer?
- Which toxins does The Naderi Center use, and why?
At The Naderi Center, we believe educated patients make the best treatment choices. The following guide covers five of the most widely used FDA-approved cosmetic neurotoxins in the United States, while Dr. Shervin Naderi shares his expertise from more than 20 years of work in facial aesthetic treatments.

Five Widely Used FDA-Approved Cosmetic Neurotoxins
Botox Cosmetic
Manufactured by Allergan Aesthetics, Botox Cosmetic (onabotulinumtoxinA) was the first FDA-approved neuromodulator for aesthetic use (2002). It remains the most recognized brand worldwide.
Typical onset: 3–5 days
Average duration: 3–4 months
Botox has the longest track record of any cosmetic neurotoxin, with more than 20 years of FDA-approved cosmetic use.
Botox is one of the three neurotoxins our physicians use at The Naderi Center, along with Dysport and Daxxify. It has been in our hands for many years, and our team and our patients appreciate its long safety record and consistent results.
“Botox is predictable, refined, and extremely reliable,” says Dr. Shervin Naderi. “But brand alone doesn’t create natural results. Injection technique does.”
At The Naderi Center, Botox is frequently used for these treatment areas:
- Glabellar or frown lines
- Forehead lines
- Crow’s feet
- Chin dimpling
- Lip flip treatments
- Neck banding
Dysport
Produced by Ipsen, Dysport (abobotulinumtoxinA) was approved in 2009.
Clinically, it performs similarly to Botox, though some patients notice slightly faster onset. It may also diffuse a bit more broadly, which can be beneficial for treating larger muscle groups like the forehead.
Duration: 3–4 months
“Dysport can create beautifully smooth foreheads when dosed precisely,” Dr. Naderi explains. “Understanding diffusion patterns is key.”
Xeomin
Manufactured by Merz Aesthetics, Xeomin (incobotulinumtoxinA) is often called a “naked” toxin because it contains no accessory proteins.
Duration: 3–4 months
Xeomin was FDA-approved for cosmetic use in 2011. It is an effective, well-studied option used by many practices.
Jeuveau
Introduced in 2019 by Evolus, Jeuveau (prabotulinumtoxinA-xvfs) was developed specifically for aesthetic use.
Duration: 3–4 months
Jeuveau is FDA-approved and effective, and it is widely used for frown lines.
“Jeuveau performs well when dosed correctly,” Dr. Naderi says. “As with any toxin, the injector matters more than the brand.”

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Daxxify
Developed by Revance Therapeutics and FDA-approved in 2022, Daxxify (daxibotulinumtoxinA-lanm) is positioned as a longer-lasting neuromodulator.
Why Does Daxxify Last Longer?
Daxxify uses a proprietary peptide stabilizer instead of traditional human serum albumin. Some studies suggest Daxxify can last longer than traditional toxins when it is dosed properly.
However, there is an important catch:
Daxxify’s longevity is dose-dependent.
Higher dosing strategies are associated with longer-lasting results. In other words, extended duration often correlates with increased units administered.
“Longevity is tied to dose,” Dr. Naderi explains. “When you increase dose appropriately, duration extends. Daxxify was engineered to maximize that effect.”

Realistic Expectations
Some patients see 5 to 6 months of improvement, but duration varies depending on:
- Muscle strength
- Metabolic rate
- Gender
- Athletic activity
- Injection precision
Because Daxxify may last longer, precision is even more critical.
“If it lasts six months, you want it placed perfectly,” Dr. Naderi notes. “Longevity magnifies both good and bad technique.”
Book a Consultation
Thinking about Botox? Our physicians see patients at our offices in Reston, VA and Chevy Chase, MD.
Book a ConsultationLearn about Botox
Call Reston (703) 481-0002 or Chevy Chase (301) 222-2020.
Botox vs. Dysport: How They Compare
Botox and Dysport are the two toxins patients ask us to compare most often. Both contain botulinum toxin type A, and both relax the muscles behind frown lines, forehead lines and crow’s feet. The differences come from how each company makes and formulates its product.
How quickly they work
Botox usually starts to show in 3 to 5 days and reaches its full effect within about two weeks. Dysport often kicks in a little sooner, sometimes within a day or two. Once both have settled, the results look much the same, and either one lasts about 3 to 4 months for most patients.
How they spread
Dysport spreads a little farther from each injection point, which can work well across a broad muscle like the forehead. Your physician accounts for that spread when deciding where to inject and how much to use.
Why the unit counts differ
A unit of Dysport is not equal to a unit of Botox. Dysport takes more units to reach the same effect, so a Dysport treatment shows a higher unit count for the same result. That is also why comparing the two by price per unit can mislead; compare the whole treatment instead.
“The difference between Botox and Dysport is like the difference between Coke and Pepsi,” says Dr. Naderi. “There are subtle differences between the two, but most don’t notice any.”
Side Effects and Who Should Wait
Neurotoxin injections take only a few minutes, and side effects are usually mild whichever brand is used: some redness, swelling or a small bruise at the injection sites, slight tenderness, or a headache. These typically settle within a few days to a week.
Serious reactions are rare. Call your doctor or get medical care right away if you notice drooping eyelids, blurred vision, new muscle weakness, or any trouble swallowing, speaking or breathing after treatment.
Neurotoxins are not recommended during pregnancy or for anyone who has had a reaction to a botulinum toxin product before. Dysport contains a small amount of cow’s milk protein, so it is not used for patients with a cow’s milk protein allergy. Tell your physician about any allergies, medications and medical conditions before your appointment.
Why Does Botox Pricing Vary Between Offices?
Patients frequently ask why pricing varies dramatically between practices.
Here are the primary reasons:
- Whether pricing is quoted per unit or per area
- Different dilution practices
- Different dosing philosophies
- Injector experience level
At The Naderi Center, dosing is based on:
- Facial anatomy
- Muscle strength
- Gender-specific aesthetics
- Long-term facial harmony
“We don’t treat units. We treat faces,” says Dr. Naderi. “Under-dosing to hit a price point leads to short-lived or incomplete results.”
Which Neurotoxins Does The Naderi Center Use?
At The Naderi Center, our physicians use Botox, Dysport and Daxxify, and every neurotoxin injection is done by a physician.
Botox and Dysport have been on the market the longest and have the longest history of FDA approval for cosmetic use. That long track record is why they have been in our hands for so many years.
We added Daxxify because it came to market as a longer-acting toxin. Some studies suggest it can last longer when it is dosed properly, which can make it a good option for patients who would like fewer visits.
Xeomin and Jeuveau are also FDA-approved and effective. We simply have the most experience with Botox, Dysport and Daxxify, and that experience is what we bring to every treatment.
What Truly Determines Natural Results?
The most important factor is not the label on the vial.
It is:
- Injector expertise
- Deep anatomical knowledge
- Conservative dosing philosophy
- Aesthetic restraint
Dr. Shervin Naderi has more than 20 years of exclusive facial plastic surgery experience. That background influences every injection pattern, especially in high-movement areas like the brows and around the mouth.
“The goal is refinement, not freezing,” Dr. Naderi says. “You should look rested, not injected.”
See the Doctor
Questions about what you just read? Ask our doctors in person. Book a consultation in Reston or Chevy Chase, or start with a virtual consultation from home.
Book a ConsultationVirtual consultation
Call Reston (703) 481-0002 or Chevy Chase (301) 222-2020.
The Takeaway for Patients in Virginia and Maryland
All five of these FDA-approved neurotoxins can produce beautiful, natural results when used correctly:
- Botox Cosmetic
- Dysport
- Xeomin
- Jeuveau
- Daxxify
Botox and Dysport have the longest track record, and Daxxify may last longer when it is dosed properly. Xeomin and Jeuveau are proven, FDA-approved options as well. At The Naderi Center, we use Botox, Dysport and Daxxify, the toxins our physicians have the most experience with.
But at The Naderi Center, the philosophy is simple:
“The injector determines the outcome, not the brand,” Dr. Naderi emphasizes.
If you are considering a neuromodulator, our physicians can help you choose the product and dose that suit your face.
Book your appointment at our Reston and Chevy Chase offices here.
Frequently Asked Questions about Cosmetic Neurotoxins
Does Daxxify always last six months?
Not always. Duration depends heavily on dose and individual muscle strength. Higher dosing strategies tend to extend longevity.
Are Xeomin and Jeuveau good options?
Yes. Both are FDA-approved and effective. At The Naderi Center, we use Botox, Dysport and Daxxify because they are the toxins our physicians have the most experience with.
Why do some clinics advertise very low prices?
Pricing can reflect dilution, dosing, how prices are quoted or promotions. Ask how many units you will receive and who will be injecting you.
Are neurotoxin units interchangeable?
No. Each brand is dosed on its own scale, so a unit of one product is not the same as a unit of another. Your physician doses each product on its own terms.
Can I switch between brands?
Yes. Many patients rotate based on preference and response.
Which is better, Botox or Dysport?
Neither is better across the board. Both contain botulinum toxin type A, give similar results and last about 3 to 4 months; Dysport may start working a little sooner and spreads slightly more. Your physician will suggest one based on the area being treated and how you have responded before.
How far ahead of an event should I get Botox?
Book Botox two to three weeks before the event, since it can take up to two weeks to reach its full effect. If the date is closer than that, Dysport or Daxxify, which work faster, may be the better choice.
Does Daxxify last twice as long as Botox?
No. Some studies suggest Daxxify can last longer than Botox when it is dosed properly, but not twice as long, especially if the dose hasn’t been adjusted. At The Naderi Center, Daxxify is dosed at about double the Botox units because of how it is diluted, so 20 units of Botox is roughly equal to 40 units of Daxxify.

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