Botulinum toxin · Frown lines
Botulinum toxin between the brows
The two vertical lines between the brows, the 11 lines, are made by the muscles that frown. We frown when we think, when we read, when the sun is in our eyes. Over time the line stays there at rest, and the face looks annoyed when it is not.

Botulinum toxin relaxes those muscles. The skin stops being pulled to the centre and the line softens. You can still frown lightly; it no longer marks deeply.
It is the area we treat most often, and the one that changes the look of a face the most. A 15-minute session, €150.
What changes with frown line treatment
Botulinum toxin in the muscles that pull the brows towards the centre. The two vertical lines between the brows, the 11 lines, soften. You can still frown lightly; it no longer marks deeply.
Is it for you?
A line that shows at rest, or a face that looks annoyed when it is not. And people who frown a lot and want to stop the line settling in; many start with this area in their 30s.
What happens in the session
Small, quick injections between the brows. The area is a little more sensitive than the forehead, but no anaesthetic is needed. Fifteen minutes.
What you'll see, and when
First signs at 3 days, complete by day 14. That is when we review it, if anything needs adjusting. It lasts 3 to 6 months, with no rebound after.
After the treatment
Nothing to recover from. Avoid rubbing the area and hard exercise for the first 4 hours.
Why it looks natural
An angry-looking result comes from relaxing the wrong muscles. We treat only the ones that pull the brows towards the centre; the ones that raise them stay untouched, so the expression survives and you can still frown lightly; it just no longer marks deeply. The review at day 14 exists for the fine-tuning: if anything needs adjusting, that is when we see it.
Honest answers
Will it show? First signs at 3 days, complete by day 14, when we review it.
Does it hurt? Small, quick injections with no anaesthetic. The area is a little more sensitive than the forehead; it is over in seconds.
What if I don't like it? The toxin cannot be dissolved; it wears off on its own in 3 to 6 months, with no rebound. The first dose is deliberately conservative.
How we do it at Cosmo Clinic
We relax only the muscles that frown; the ones that raise the brows are untouched, so the expression stays. It is the area we treat most often, usually with the forehead in the same session: both areas cost €249, the frown lines alone €150. Add crow's feet and three areas cost €320.
Options and prices
| Treatment | Price |
|---|---|
| Botulinum toxin — special area (gummy smile, bunny lines, nose tip, chin) | 120 € |
| Botulinum toxin — 1 area (frown lines or crow's feet) | 150 € |
| Botulinum toxin — forehead | 189 € |
| Botulinum toxin — 2 areas | 249 € |
| Botulinum toxin — 3 areas | 320 € |
| Botulinum toxin — masseter | 305 € |
| Botulinum toxin — hyperhidrosis (underarms/hands) | 450 € |
| Lip flip | 99 € |
The plan and the final figure are confirmed at the assessment consultation, at no cost.
At a glance
What to expect
Results
- Vertical lines between the brows softened.
- The resting frown is gone.
- First signs at 3 days, full result at 14.
- Lasts 3 to 6 months.
Key features
- 15-minute session, no anaesthetic.
- Same-day return.
- Pairs well with the forehead (€249 for both areas).
- €150, price per treatment.
Before and after
Cosmo Clinic patients, with written consent. Results vary from person to person.


Frequently asked questions
Short answers to the questions we hear every day. Everything else belongs in the consultation.
What causes the 11 lines?
The muscles that pull the brows towards the centre and down, every time you frown. Years of repetition crease the skin until the line shows at rest.
Does botulinum toxin prevent wrinkles?
It prevents the line that has not settled in yet. If the muscle stops creasing the skin for years, the resting wrinkle takes far longer to appear. That is why many people start with this area in their 30s.
Will my brows look stuck?
No. We relax the muscles that frown; the ones that raise the brows are untouched. You keep your expression, without the line.
When do I see the result?
You see the first signs at 3 days and the full result at 14, which is when we review it if anything needs adjusting.
Does it hurt?
Small, quick injections. The area is a little more sensitive than the forehead, but we do not use anaesthetic.
How long does it last?
Between 3 and 6 months. Then you frown as before; there is no rebound.
From what age?
When the line starts to show at rest, or when you frown a lot and want to stop it appearing. There is no right age; there is a pattern of expression.
Can I treat the forehead at the same time?
Yes, and it is often what we recommend: treating the forehead alone, without the frown lines, can lower the brows. Both areas together cost €249.
Similar treatments
Botulinum toxin · Gummy smileBotulinum toxin for a gummy smile
Lowers the upper lip when you smile, so less gum shows.
Botulinum toxin · Lip flipLip flip
Turns the upper lip slightly outward, no added volume.
Botulinum toxin · Nose tipBotulinum toxin to lift the nose tip
Lifts a nose tip that drops when you smile, slightly.
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