1. The unit problem
Botulinum toxin is a drug measured in units. A treatment consists of a number of units placed at a number of points. That is the clinical description, and it is the only description that supports a comparison.
What clinics sell is areas. One area, two areas, three areas, usually with a price that falls as the number rises. An area is a region of the face, and the number of units placed in it is a clinical decision that varies between practitioners, between patients and between visits.
So two clinics quoting the same price for three areas may be delivering doses that differ considerably. Neither is necessarily wrong. But the price comparison you thought you were making has not happened.
2. Why dose legitimately varies
Muscle bulk differs between people, and a heavier frown muscle needs more product to achieve the same softening. Men typically need higher doses than women in the same area for the same effect.
The result being aimed for differs too. A soft result that preserves movement uses less than a complete freeze, and either can be the right choice depending on what was agreed. A first treatment in a new patient is often deliberately conservative, with the option to add at review.
None of that variation is a problem. The problem is that it is invisible on a price list, and the price list is what patients compare.
3. What counts as an area, anyway
There is no standard. Most clinics treat the glabella, the forehead and the crow's feet as the three classic areas, but beyond those it becomes arbitrary. Is the chin an area. Are both sides of a jaw one area or two. Does a lip flip count as an area or as a bolt on. Different answers appear on different price lists, and none of them is wrong because there is nothing to be wrong about.
The commercial consequence is predictable. Areas can be counted generously when it makes a price look competitive, and counted tightly when it makes a treatment look better value.
Botulinum toxin, three treatment areas, single session
Multi area pricing almost always reduces the effective per area figure, because the assessment, the appointment and the prescriber's involvement are shared across the areas rather than repeated.
That is a genuine efficiency, which is why comparing a one area price at one clinic with a three area price at another produces a conclusion about pricing structure rather than about value.
An indicative editorial band, not a survey, not a quote and not a recommendation. How we build these bands.
4. The questions that make a price comparable
How many units, of which product, in which muscles. What dose did I have last time, and is this the same. Is a review at two weeks included, and is an adjustment at that review included or charged.
Those four questions turn an incomparable price into a comparable one. They also give you a record. Knowing that you had a specific dose that produced a result you liked is the difference between a repeatable treatment and starting again every time.
5. Keep your own record
Write down the product, the dose in units per area, the date and how you felt about the result at two weeks and at three months. It takes a minute and it is the single most useful thing a repeat patient can do.
It also protects you if you change practitioner, because the new one starts with information rather than a guess, and it makes escalation visible. Doses that creep upward over years are extremely hard to notice without a record and extremely obvious with one.
6. Offers, and what they are usually for
Introductory offers, three for two arrangements and seasonal promotions are common in this category. They are legitimate commercially and they are designed to convert a first visit into a routine.
Two things are worth checking. Whether the offer applies to the treatment you actually need, or requires you to take areas you did not want. And whether the price after the offer is one you are content to pay three or four times a year, because that is the real decision.
Note also that promotional offers on prescription only medicines run into UK advertising rules. A clinic running aggressive promotions on a named toxin brand is doing something the Advertising Standards Authority has ruled against repeatedly, which is worth noticing.
7. What to take from this
Stop comparing per area prices between clinics. It compares packaging.
Ask instead what dose, what product, what plan and what is included afterwards, then compare those. And if a clinic will not tell you how many units you are receiving, that is not commercial confidentiality. It is your treatment record, and you are entitled to it. The wider set of questions is in the consultation checklist, and the underlying treatment is explained in what botulinum toxin does and does not do.