This is a very common question when patients first start having Botox (or Dysport) injected. The number of units is ultimately based on how severe the wrinkles are, how strong the muscle action is and how much area is being treated. Let’s start by defining the areas in answering “How Many Units of Botox for Forehead?”:
The Glabella is the area between the eyes and eyebrows. It’s also where the vertical frown lines can be seen when one looks angry. This is what patients commonly refer to when they ask the question, “how many units of Botox for the forehead”? Although this is not truly the forehead, there is a fairly standard dosing for this area. 20 units of Botox (60 units of Dysport) are fairly standard for this area and that typically translates into a duration (or longevity) for the product of 3-4 months.
The area above the eyebrows is the true forehead and in this area we see horizontal lines that appear as we look surprised. They are the rows of wrinkles above the eyes. This area usually requires fewer units of Botox (or Dysport) then the glabella. Typically, we would use between 8 and 20 units of Botox in the area above the eyes.
The crow’s feet
The lines and wrinkles in the area at the outer eyes and close to the temples are commonly referred to as crow’s feet. These wrinkles are sometimes referred to as smile lines The number of units is variable and most patients will use between 5-10 units of Botox per side (10 – 20 units total).
Units Vs. Duration
Many patients want to know why one injector would use 10 units and another 15 units in a particular area. In some cases, it may have to do with how conservative the injector is, how small or large the patient budget is, but in most cases, it’s about duration. Good injectors want to help their patients achieve longer duration. Lowering the price and therefore the number of units simply means that the product will wear off more quickly. Consumers may be tricked into feeling that they are getting a good deal, but using less units simply means they will be visiting the office more often.