How Many Units of Botox or Dysport Will I Need? A Complete Guide
If you’re considering Botox or Dysport, one of the first questions you probably have is: “How many units will I need?”
It’s a great question — and an important one. Knowing what to expect helps you feel more confident before your appointment and ensures your results match your goals.
At The BTX Studio, we use both Botox® and Dysport®, two of the most trusted neuromodulators available today. While they work in very similar ways, the number of units you’ll need can vary depending on which product is used. Here’s a simple breakdown.
Botox vs. Dysport: What’s the Difference?
Both Botox and Dysport are FDA-approved neuromodulators that temporarily relax the muscles that cause wrinkles. This softens lines, refreshes your appearance, and helps prevent deeper wrinkles from forming over time.
Botox®: The most well-known brand, studied for decades and widely trusted.
Dysport®: Works very similarly but has smaller protein molecules, meaning it can spread a little more easily in certain areas. Some patients notice it kicks in slightly faster.
The key thing to know: Dysport units are measured differently than Botox units. You’ll usually see a higher Dysport unit number, but that doesn’t mean the treatment is stronger or more expensive — pricing and effectiveness balance out.
Average Units by Treatment Area
Forehead lines
Botox: 10–20 units
Dysport: 30–60 units
Frown lines (11s between brows)
Botox: 20–30 units
Dysport: 50–90 unitsCrow’s feet (sides of eyes)
Botox: 6–12 units per side
Dysport: 18–36 units per sideEyebrow lift
Botox: 4–6 units
Dysport: 10–18 unitsLip flip
Botox: 4–6 units
Dysport: 10–15 unitsChin (dimpling)
Botox: 6–8 units
Dysport: 15–24 unitsMasseter (jaw slimming/teeth grinding)
Botox: 30–50 units per side
Dysport: 80–120 units per side
These are averages — your exact dosage depends on your facial anatomy, muscle strength, and aesthetic goals.
Factors That Influence How Many Units You’ll Need
While the table above gives a starting point, here’s what really determines your unique dosage:
Muscle Strength: Stronger muscles (especially in the forehead or jaw) need more units.
Gender: Men often require more units than women because their facial muscles are typically larger.
Wrinkle Depth: Softer, fine lines need fewer units than deeper, well-established lines.
Desired Look: Some clients want a very smooth, “frozen” effect; others prefer a softer, natural refresh.
Consistency: Regular treatments may mean you need fewer units over time as the muscles become trained to relax.
Botox vs. Dysport: Which Should I Choose?
Both products deliver natural, refreshed results — it often comes down to personal preference and your injector’s recommendation.
Some clients love Dysport for areas like the forehead where a smoother spread is helpful.
Others prefer Botox for precision in smaller areas, like around the eyes or lips.
At The BTX Studio, we’ll help you choose the right option based on your goals and anatomy.
How to Know Exactly How Many Units You’ll Need
The truth is: you won’t know your exact number until you meet with your injector. Online ranges are helpful, but the best dosage is customized for you.
That’s where our expertise comes in. With over 11 years of medical experience and thousands of injections performed, our lead injector, Jeremy Fong, PA-C, MPAS, brings both precision and artistry to every treatment plan.
Frequently Asked Questions About Botox and Dysport
1. Is Dysport cheaper than Botox?
Not necessarily. While Dysport typically requires more units, the cost per unit is lower. This usually balances out so the overall treatment cost is very similar to Botox.
2. How long do Botox and Dysport results last?
Both last about 3–4 months for most clients. Some find Dysport kicks in a little faster, while Botox may last slightly longer — but results are very similar overall.
3. Can I switch between Botox and Dysport?
Yes! Many clients try both to see which they prefer. It’s safe to switch, and your injector will help guide you if one product is a better fit for a particular treatment area.
4. Do I need the same number of units every time?
Not always. Some clients require fewer units over time as their muscles relax with consistent treatments. Your injector will adjust your dosage as needed.
5. Will I look frozen if I get too many units?
Not at The BTX Studio. Our approach is focused on natural, refreshed results. We’ll always tailor your dosage to your unique features and goals so you still look like you — just more rested.
The Bottom Line
Whether you’re asking “How many Botox units do I need for forehead lines?” or “How many Dysport units do I need for crow’s feet?” — the answer will always depend on your unique anatomy and your desired results.
Ready to find out exactly what you’ll need?
Let’s create a plan that leaves you looking refreshed, confident, and naturally you.