Forehead botulinum toxin
Cosmo Clinic Team
Forehead Botox is a popular non-invasive aesthetic treatment designed to reduce horizontal lines across the forehead. By injecting botulinum toxin (Botox) into the frontalis muscle, the treatment relaxes overactive facial muscles and smooths expression lines – giving the forehead a youthful, refreshed appearance.
At Cosmo Clinic in Lisbon, forehead botulinum toxin is always assessed alongside the glabellar area and brow to ensure a balanced result appropriate for each patient's anatomy. Dosage and placement are critical — overtreating the forehead can affect brow position. Treatment takes around 15 minutes with no downtime.
Your first consultation at Cosmo Clinic is free. Our English-speaking doctors will assess your forehead anatomy and explain the expected outcome before any treatment takes place.
Results
Visibly smoother forehead skin.
Reduced appearance of dynamic wrinkles.
More relaxed and rested facial expression.
Results begin to appear in 3–5 days and last 3–6 months.
Key Features
Before & After
Real patients. Natural outcomes, documented with consent.



Individual results may vary.
Clinical Guide
Botulinum Toxin: Complete Guide
Mechanism, treatment areas, real protocol, recovery and contraindications.
FAQ
How long do forehead Botox results last?
On average, forehead Botulinum toxin lasts between 3 and 6 months. Duration varies with metabolism, dose, and the activity of the frontalis muscle. With regular maintenance, muscles respond in a more measured way over time and the interval between sessions tends to extend.
Can I have forehead Botox if I already have deep-set wrinkles?
Yes, but the outcome depends on how long the lines have been established. Dynamic lines respond very well to botulinum toxin; deeper static wrinkles may require a combined approach with hyaluronic acid, biostimulators or skinbooster protocols. Our medical team assesses each case during consultation.
How many units of Botox are typically needed in the forehead?
The dose is always personalised, based on anatomy, frontalis muscle strength and your aesthetic goal. The exact quantity is defined during consultation after clinical assessment, we don't share standard dosages because every face has its own muscular blueprint.
Is there a risk of drooping eyelid (ptosis) with forehead Botox?
When the treatment is performed by qualified professionals with correct technique and respect for anatomy, the risk of ptosis is very low. Proper consultation and precise marking of injection points are essential to preserve the function of the eyelids and brows.
How often should I repeat forehead Botox?
Maintenance is usually done every 4 to 6 months, whenever expression lines begin to return. Repeating before the effect has fully worn off produces more stable results and a consistently smooth appearance throughout the year.
