Name: Skin Works Medical Spa
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Botox is onabotulinumtoxinA. Dysport is abobotulinumtoxinA. Both temporarily reduce signaling between nerves and selected muscles, which can soften expression lines caused by repeated muscle contraction. The similarity ends there: each product has its own manufacturing process, potency assay, dosing system and FDA-approved indications.

Botox Cosmetic OnabotulinumtoxinA with several FDA-approved cosmetic treatment areas.

Dysport AbobotulinumtoxinA, FDA-approved cosmetically for moderate to severe glabellar frown lines.

Units are different There is no FDA-approved Botox-to-Dysport unit conversion formula.

Botox vs. Dysport at a Glance

Feature	Botox Cosmetic	Dysport
Active ingredient	OnabotulinumtoxinA	AbobotulinumtoxinA
Drug class	Botulinum toxin type A neuromodulator	Botulinum toxin type A neuromodulator
FDA-approved cosmetic areas	Glabellar lines, crow’s feet, forehead lines and platysma bands	Glabellar lines in adults under 65
FDA-labeled glabellar dose	20 units	50 units
Initial effect	May begin within 24 to 48 hours	Some patients respond within 24 hours; median onset in pivotal studies was approximately 2 to 3 days
Duration	May last up to about 4 months in labeled cosmetic treatment	Clinical data show some glabellar response through 4 to 5 months in some patients
Current Torrance unit price	$12.50 per unit	$4.50 per unit
Can units be converted directly?	No. Both manufacturers state that their potency units are specific to the individual product.

How Are Botox and Dysport Similar?

Both medications use botulinum toxin type A to reduce acetylcholine release at the neuromuscular junction. When a selected facial muscle contracts less strongly, the skin over that muscle folds less aggressively.

That makes both useful for dynamic wrinkles, lines that become more visible during expressions such as frowning, squinting or raising the eyebrows.

Both are temporary. Both require precise placement. Both can produce natural-looking movement when the dose and injection pattern are appropriate.

Neither is dermal filler. Botox and Dysport change muscle activity; they do not restore lost cheek volume, physically fill a deep fold or augment the lips.

The FDA-Approved Uses Are Not the Same

This is one of the clearest differences between the two products.

Botox Cosmetic is currently FDA-approved in adults for temporary improvement of:

moderate to severe glabellar frown lines
moderate to severe lateral canthal lines, or crow’s feet
moderate to severe forehead lines
moderate to severe platysma bands connecting the jaw and neck

The platysma-band indication was added in 2024.

Dysport’s U.S. cosmetic indication is narrower: temporary improvement of moderate to severe glabellar lines between the eyebrows in adults younger than 65.

Dysport is frequently used off-label by experienced injectors in other facial muscles, including the forehead and crow’s feet. Off-label prescribing can be medically appropriate, but it should not be confused with an FDA-approved cosmetic indication.

Does Dysport Work Faster Than Botox?

This is not as clear-cut as older comparison articles make it sound.

Dysport’s clinical studies show that some patients noticed improvement within 24 hours and that median onset in pivotal studies was approximately two to three days.

Current Botox Cosmetic information also states that patients may begin noticing results within 24 to 48 hours.

That makes it difficult to support a universal statement that Dysport always starts faster.

Individual onset can vary with:

dose
muscle strength
treatment area
injection pattern
previous neuromodulator treatment
individual response

A treatment should also not be judged solely by how the muscle feels on day one or day two. The effect continues developing after the first visible change.

Does Dysport Last Longer Than Botox?

Again, there is no universal winner.

Botox Cosmetic states that aesthetic results may last up to approximately four months.

Dysport clinical data demonstrate continued glabellar-line improvement in some patients through four and five months. That does not mean every Dysport treatment lasts five months or that it automatically lasts longer than Botox.

A prospective randomized comparison in which patients received Botox on one side of the upper face and Dysport on the other found no statistically significant difference between the products, with measurable improvement from both at 150 days.

Other comparative studies have produced different results, partly because they used different dose ratios. That inconsistency is one reason simplistic brand-level longevity claims should be avoided.

In practice, duration depends heavily on dose, muscle activity, area treated and individual response.

Does Dysport Spread More Than Botox?

The claim that “Dysport has smaller molecules, so it spreads farther” is repeated across cosmetic websites, but the pharmacology is more complicated.

A scientific review of botulinum-toxin diffusion found that molecular weight and complexing proteins do not appear to determine diffusion in the simple way often claimed online.

Factors that can influence the treatment field include:

total dose
injection volume
concentration
injection location
depth
muscle anatomy
injection technique

There may be product-specific differences under particular conditions, but “Dysport spreads more because it is smaller” is not a reliable rule for selecting treatment.

Spread is not automatically good or bad. The objective is for the treatment effect to reach the intended muscle while minimizing unwanted effect on nearby muscles. Product choice, dose, dilution and injector technique all contribute.

How Many Dysport Units Equal One Botox Unit?

There is no official conversion ratio.

The older version of this article stated that approximately 2.5 to 3 Dysport units equal one Botox unit. Ratios in that range appear in clinical literature, but they should not be presented to patients as a universal conversion formula.

The prescribing information for both products is explicit: potency units are specific to that product and cannot be compared with or converted into the units of another botulinum toxin product.

The safer comparison is to look at product-specific approved dosing.

For FDA-approved treatment of glabellar lines:

Botox Cosmetic uses a labeled total dose of 20 units
Dysport uses a labeled total dose of 50 units

Those are independent studied doses, not a conversion formula for every facial muscle.

Which Costs More, Botox or Dysport?

The current Skin Works Torrance price list shows:

Product	Current price per unit	FDA-labeled glabellar dose	Illustrative cost at that labeled dose
Botox Cosmetic	$12.50	20 units	$250
Dysport	$4.50	50 units	$225

This is a much more useful comparison than saying Dysport is “cheaper per unit.” The unit systems are different.

The $250 and $225 examples above simply apply current Skin Works standard unit pricing to the FDA-labeled glabellar doses. Your actual treatment may require a different dose, especially when treating an area off-label or tailoring treatment to muscle strength and desired movement.

Current treatment details are available on the Botox and Dysport service pages.

So Which Is Better, Botox or Dysport?

There is no evidence-based answer that applies to every patient.

Botox may be worth discussing when:

you want treatment in one of its additional FDA-approved cosmetic areas
you have used Botox previously and know your response
your treatment plan is built around established Botox dosing
you prefer the product with the longest U.S. cosmetic track record

Dysport may be worth discussing when:

glabellar frown lines are the main concern
you have previously responded well to Dysport
your provider prefers its dosing and handling for your anatomy
the total treatment plan and current pricing make sense for you

Neither list means one brand is medically superior in those situations. It identifies practical reasons a provider and patient might choose one over the other.

Can You Switch From Botox to Dysport?

Yes. Patients sometimes switch products because of preference, response, pricing, availability or a change in treatment goals.

The provider should know:

which toxin you previously received
how many units were used
which muscles were treated
when the treatment was performed
how quickly it worked
how long you felt the effect lasted
whether you experienced unwanted weakness or asymmetry

Do not convert the old dose yourself. The new treatment should be planned using the dosing system of the new product.

What About Forehead Lines, Crow’s Feet and Other Areas?

Botox Cosmetic has FDA-approved dosing for forehead lines and crow’s feet in addition to the glabella.

Dysport is commonly used clinically in those areas, but those aesthetic uses are off-label under the current U.S. Dysport indication.

Other common off-label neuromodulator uses can include:

bunny lines
lip flip
chin dimpling
selected brow-position adjustments
masseter treatment
some lower-face treatment patterns

Off-label does not mean experimental by definition. It means the FDA-approved label for that particular product does not include that specific cosmetic use.

Do Botox and Dysport Have the Same Risks?

They share many important safety considerations because both are botulinum toxin type A products.

Both carry a boxed warning regarding the possibility of toxin effects spreading away from the injection site. Serious symptoms can include difficulty swallowing, speaking or breathing, generalized weakness and other neuromuscular effects.

Cosmetic treatment can also cause more localized problems such as:

bruising or injection-site discomfort
headache
temporary eyelid or eyebrow drooping
unwanted weakness of a neighboring muscle
asymmetry

Candidacy should be reviewed carefully in patients with neuromuscular disorders, infection at the proposed injection site, previous reactions to botulinum toxin products or medications that may interact with neuromuscular transmission.

Patients should also tell the provider about any botulinum toxin product received in recent months rather than referring to every previous treatment simply as “Botox.”

Why Injector Technique Matters More Than Brand Marketing

Botox and Dysport are tools. Neither product can compensate for poor muscle assessment, inappropriate dosing or inaccurate placement.

A thoughtful treatment begins by watching the face move. Muscle strength, brow position, baseline asymmetry and the relationship between forehead and glabellar muscles can change where and how much product should be placed.

This is particularly important in the forehead, where aggressive relaxation can create brow heaviness in patients whose forehead muscle is helping maintain brow position.

Brand choice matters, but anatomy and dosing matter more than slogans about one product being “stronger,” “softer,” “faster” or “more natural.”

If you are comparing providers as well as products, see How to Choose an Injectables Provider in the South Bay.

Botox and Dysport should be compared as separate medicines, not converted like currencies.

Both can produce excellent cosmetic results when properly selected and dosed. The most useful decision comes from your anatomy, treatment area, previous response, FDA-approved indication, total cost and the provider’s experience with both products.

Frequently Asked Questions

Is Botox better than Dysport?

Not universally. Both are effective botulinum toxin type A products. Botox has more FDA-approved cosmetic treatment areas in the United States, while Dysport has established efficacy for glabellar frown lines. Individual response and treatment goals can make either product reasonable.

Does Dysport work faster than Botox?

Not reliably enough to make that a universal rule. Dysport studies show median onset around two to three days and response in some patients within 24 hours. Botox Cosmetic also reports that results may begin within 24 to 48 hours.

Does Dysport spread more than Botox?

It is too simplistic to say Dysport spreads more because it has smaller molecules. Research indicates that dose, injection volume, concentration, anatomy and technique all influence the treatment field, while molecular weight alone does not explain diffusion.

How many Dysport units equal 20 Botox units?

There is no FDA-approved conversion. Botox and Dysport potency units are product-specific and should not be directly converted. The FDA-labeled glabellar doses happen to be 20 Botox units and 50 Dysport units, but that does not establish a universal conversion ratio for other areas.

Which lasts longer, Botox or Dysport?

Both commonly provide effects lasting several months. Dysport studies show some patients maintaining improvement through four to five months, while Botox Cosmetic may last up to about four months. Individual duration varies, and direct comparative evidence does not establish a consistent winner.

Which is cheaper at Skin Works?

Current Torrance pricing is $12.50 per Botox unit and $4.50 per Dysport unit, but the unit systems are different. Using each product’s FDA-labeled glabellar dose, the illustrative standard-price totals are $250 for 20 Botox units and $225 for 50 Dysport units.

Is Dysport FDA-approved for forehead lines and crow’s feet?

Not under the current U.S. cosmetic label. Dysport’s cosmetic FDA indication is for moderate to severe glabellar lines in adults under 65. Forehead and crow’s-feet treatment with Dysport is off-label.

Can I switch between Botox and Dysport?

Yes. Tell your injector exactly which product, dose, treatment areas and date were used previously. The new product should be dosed according to its own formulation rather than using a simple unit conversion.

Sources & Medical References

Botox Cosmetic and Dysport are distinct prescription botulinum toxin products. Their potency units are product-specific and are not interchangeable. FDA-approved cosmetic indications differ by product, and some aesthetic uses discussed in clinical practice are off-label. This article is educational and does not replace individualized medical evaluation.

Botox vs. Dysport: Differences, Cost & Results