SOS Botox: medical information on botulinum toxin

SOS Botox is a medical information website about botulinum toxin, the medicine injected to soften certain wrinkles by temporarily relaxing a muscle. It is written for people with questions before a first injection, for those hesitating between two products, and for those worried about an unexpected result. The site sells nothing and makes no offers: it explains, it cites its sources, and it always refers you back to a conversation with your doctor, the only person who can assess your situation.

Start with the area that concerns you

The forehead is not treated like the jaw, nor frown lines like the neck. For each of the eleven areas of the face and neck, a page explains which muscle is involved, when the toxin is used, which toxin is approved for that area in France and which risks are described. Some areas correspond to an official indication, others do not: we say so clearly.

Understand before you decide

How does the toxin act on the muscle? Why does its effect take a few days to appear, and then fade? What are the contraindications, and what should you mention before an injection? The answers are gathered in our guide to what botulinum toxin is and how it is used, built on the summaries of product characteristics published by the health authorities.

A new generation of toxin: you now have a choice

Since July 2026, a short-acting botulinum toxin of a different type (serotype E) has been approved in the European Union for frown lines in adults, and for that area only^2,3. As of 9 October 2026, it is also approved in Canada (since 22 June 2026)⁶. Its profile differs from that of type A toxins, which have been used for many years: its first effects appear from 8 hours and the effect usually lasts 2–3 weeks², whereas with a type A toxin the first effects usually appear within 2–3 days¹ and the effect usually lasts 3–4 months, up to 6 months depending on the product^1,4,5.

Neither is better than the other: one works faster and for a shorter time, the other more slowly and for longer. The long-acting toxin remains the right choice in particular for a lasting effect and for the areas where it alone is approved. What is known today, and what is still unknown, is set out in our section on the new botulinum toxin.

If the result is not what you expected

An eyebrow that rises too high, an eyelid that droops, a less symmetrical smile, or no effect at all: these situations are worrying, but most are temporary and disappear as the effect of the product wears off. Our SOS guide describes them area by area, with the same questions for each: why, for how long, is it reversible, what can be done and when to see a doctor. Difficulty swallowing, speaking or breathing, or a problem with your vision, on the other hand, means calling emergency services without waiting (15 or 112 in France, or your local emergency number).

How this site is written

Every piece of medical information refers to a verifiable source: official product information, reports from health agencies, peer-reviewed scientific publications. The texts are drafted with the help of an artificial intelligence tool, then reviewed and approved by a doctor before publication; the date of the latest review appears on every page. No brand name of any medicine is mentioned, and no page replaces a consultation.