What Is Botulinum Toxin Treatment? Treatment Areas, Duration of Effect and FAQs

Botulinum toxin treatment, commonly known as botox, is a medical aesthetic procedure in which very small amounts of a purified protein called botulinum toxin are injected into specific facial muscles. The substance temporarily reduces the contraction signal sent from nerve endings to the muscle, with the aim of reducing the appearance of lines formed by repeated facial expressions. The effect is temporary and muscle activity returns over time.

At Max Hair, botulinum toxin treatment is planned following a doctor's assessment and performed by a doctor at our clinic in Istanbul, Türkiye. The treatment area and amount are determined after your facial structure and expressions have been examined. Results vary from person to person.

How does botulinum toxin relate to expression lines?

Lines in certain areas of the face become more visible as movements such as smiling, frowning or raising the eyebrows are repeated over the years. These are called dynamic or expression lines; they appear or deepen when the related muscle contracts.

Botulinum toxin temporarily reduces the release of a messenger substance called acetylcholine from nerve endings, so the muscle contracts less. As muscle activity decreases, the aim is to reduce the appearance of the lines created by that muscle's movement. The goal is not to stop facial expressions entirely but to reduce the activity of the targeted muscle to the extent planned by the doctor.

Static lines, which remain visible when the face is at rest, are more closely related to changes in skin structure and volume. The table below compares the two types of line factually; the doctor decides which approach is appropriate.

Which areas is botulinum toxin most commonly applied to?

Botulinum toxin is most often considered for the upper face, where the expression muscles are particularly active. The same area does not require the same plan in everyone; muscle strength, skin structure and eyebrow position differ from person to person. This is why the injection points are determined by the doctor after observing your expressions.

Botulinum toxin also has some medical uses outside aesthetics; this article covers only the aesthetic treatment aimed at expression lines. The areas commonly considered in aesthetic treatment are:

• Forehead: horizontal lines that appear when raising the eyebrows.
• Between the eyebrows: vertical lines that form between the brows when frowning.
• Around the eyes: fine lines at the outer corners of the eyes that appear when smiling (often called crow's feet).

What should be considered before botulinum toxin treatment?

Before treatment, current medications, supplements and any previous aesthetic treatments should be shared with the doctor. Only the doctor decides whether a medication with a blood thinning effect needs to be paused; medications should never be stopped on your own.

Discussing expectations openly at the planning consultation helps the doctor plan the injection points and amounts appropriately. Arriving on the day of treatment with clean skin and no make-up is general advice.

How is botulinum toxin treatment performed?

The treatment is carried out by a doctor in a clinical setting. The injection points and the amount for each point are set according to the expression analysis made beforehand.

Botulinum toxin treatment usually takes 15-30 minutes and generally does not require anaesthesia; a topical anaesthetic cream can be used on request. It is completed in a single session and follows these steps:

• Doctor assessment: medical history, current medications and expectations are discussed.
• Expression analysis and planning: the injection points are set by observing how you raise your eyebrows, frown and smile.
• Skin preparation: the treatment area is cleansed and, on request, a topical cream is applied.
• Injection: small amounts of botulinum toxin are injected into the planned points with a very fine needle.
• Aftercare briefing: the doctor explains what to watch for in the first hours and on the day of treatment, as well as the follow-up plan.

What should be considered after botulinum toxin treatment?

Most people can return to their daily activities after the treatment. General advice includes not rubbing the treated area or lying down in the first hours and avoiding strenuous exercise and hot environments such as saunas and hammams on the day of treatment. Individual instructions always take priority over general information.

Mild redness or small bumps that may appear at the injection points usually settle quickly. It is advisable not to request additional injections before the effect has settled and to attend the planned follow-up.

When does the effect of botulinum toxin begin and how long does it last?

The effect of botulinum toxin usually begins within a few days and becomes noticeable within about two weeks. For this reason the outcome is assessed not immediately after treatment but once the effect has settled; the doctor may schedule a follow-up at that point.

The effect is temporary: nerve endings gradually form new connections and muscle activity returns step by step. Because this happens gradually, expressions do not return to their previous state all at once; muscle movements become more visible again over time. The effect lasts a few months; the duration varies with the person, the treated area and muscle structure.

If you wish to maintain the effect, the timing of a repeat treatment is decided together with the doctor. The interval between treatments is also planned based on an individual assessment.

Who may botulinum toxin treatment not be suitable for?

Botulinum toxin treatment is not suitable for everyone, and suitability is clarified through a doctor's assessment. Uncontrolled chronic conditions, regular medications and supplements should be shared with the doctor before planning.

Unrealistic expectations are also part of the suitability assessment. Treatment may be postponed or not recommended in the following situations:

• Pregnancy and breastfeeding.
• Active infection, inflammation or an open wound in the treatment area.
• A bleeding disorder or the use of blood thinners.
• A known allergy to botulinum toxin or its ingredients.
• Certain neuromuscular conditions such as myasthenia gravis.

What are the possible side effects of botulinum toxin?

The most common side effects are temporary redness, mild swelling, bruising and tenderness at the injection points. Some people may experience a mild headache after the treatment.

Rarely, a temporary drooping of the eyelid or eyebrow, or asymmetry in facial expressions, may develop; these should be reported to the doctor and assessed at a follow-up. Symptoms such as difficulty swallowing, speaking or breathing are very rare but require prompt medical attention.

Having the treatment performed by a doctor, sharing your full medical history and following the aftercare advice help possible side effects to be noticed early. The follow-up is the stage at which both the effect and any side effects are assessed together. Results vary from person to person.

Are botulinum toxin and dermal fillers the same treatment?

No, the two treatments work through different mechanisms. Botulinum toxin targets expression lines by temporarily reducing muscle activity, while dermal fillers use substances based on hyaluronic acid to support the appearance of areas with volume loss.

Some people have both expression lines and volume loss; particularly with deep lines that remain visible at rest, the two approaches may be considered together. The doctor decides which treatment is planned and in what order.