Dysport and Botox are both botulinum—so what’s the difference?

When you start looking into botulinum treatments at a dermatology or plastic surgery clinic, the name “Dysport” may suddenly catch your eye. If you search for it, you’ll see that it’s a botulinum toxin, which naturally makes you wonder whether it’s basically the same as Botox. And when the clinic says, “We’ll do it with Dysport,” it can feel awkward to ask, “Why?”—so you just go along with it, even though it seems like there’s something you don’t quite understand.

In fact, there are many cases where receiving either one without making a clear distinction does not cause a major problem. But if you know that the results can vary depending on the treatment area and purpose, you’ll be able to ask one more question during your consultation.

The ingredients are similar, but there are reasons the products are different

Botox is a product from the U.S. company Allergan, while Dysport is made by the French company Galderma. Both use botulinum toxin type A as the active ingredient, but the size of the protein complex and the manufacturing method are different. The basic principle is the same—blocking nerve signals in the muscle after injection—but the way it spreads in the body can differ in practice.

The unit conversion is different too. One unit of Botox is roughly equivalent to about 2.5 to 3 units of Dysport. If you only look at the cost per unit on the price list, it can be confusing, but the total cost for treating the same area is often similar. If, at first glance, you feel that “Dysport is cheaper” or “more expensive,” it’s best to check the unit conversion first.

What does it mean that Dysport spreads more widely?

Dysport has a smaller molecular weight than Botox, so after injection it tends to spread more broadly into the surrounding tissue. This is called the diffusion characteristic, and depending on the treatment area, it can be an advantage or something that requires extra caution.

In larger areas such as the forehead, Dysport’s diffusion characteristic can help create a naturally even result. On the other hand, in smaller, more delicate areas such as around the eyes, there is a possibility of affecting muscles you did not intend to target, so the practitioner’s experience with that area becomes especially important.

Diffusion characteristic*: This refers to the range over which the medication spreads into the surrounding tissue after injection. It works naturally and evenly in wider areas, but where precise control is needed, the practitioner’s experience becomes a larger factor.

Depending on the area being treated, the same characteristic can lead to completely different results. Rather than thinking, “Dysport spreads, so it’s bad,” it’s better to understand that the way it is used simply differs by area.

How quickly does it work, and how long does it last?

Dysport often appears to take effect faster than Botox. You may often hear that Botox usually starts showing results in 3 to 7 days, while Dysport begins to show effects in about 2 to 5 days. However, this is only a general tendency, and results vary from person to person.

The duration of effect is generally known to be similar for both products, averaging around 3 to 4 months. Some people feel that Dysport wears off a little faster, while others feel it lasts longer. Since duration is influenced by many factors—such as injection amount, muscle size, metabolism, and lifestyle—it’s difficult to say that one definitely lasts longer than the other. Even with the same product, the experience can differ from person to person.

So in which situations is each one used?

In many cases, the choice naturally changes depending on the treatment area and the purpose of the procedure.

• Large areas or bigger muscles: In areas with a wide surface or greater muscle volume, such as forehead lines, trapezius reduction, or calf muscles, the diffusion characteristic can be helpful.

• Areas requiring fine precision: For narrow, delicate areas such as around the eyes or the corners of the mouth, many practitioners prefer Botox.

• When the effect doesn’t seem as strong as before: Some people notice a weaker response after receiving the same product for a long time. In these cases, switching to a different product may be considered. Because the protein structures of the two products are different, the response can change after switching.

Rather than saying one is better than the other, it’s more accurate to say that the most suitable choice depends on the treatment area, the purpose, and each person’s response. In a consultation, it’s perfectly fine to ask, “Which product do you use?” and it’s also a good idea to ask why.

Both are botulinum toxins, but the choice can matter more than you might think. Since differences may appear depending on the treatment area and individual response, we recommend discussing your concerns thoroughly with the practitioner during your consultation.