Botulinum toxin is a protein of biological origin used in non-invasive medical and cosmetic treatments. It acts by relaxing the muscles and, consequently, softening the fine lines and wrinkles caused by the repeated contraction of the facial muscles.
It is most frequently and effectively used in the upper third of the face to minimize lines between the eyebrows, on the forehead and around the eyes (“crow’s feet”) as well as horizontal wrinkles at the top and on the sides of the nose. It is applied by injection in a single 20-minute session; it is not painful and does not require previous preparation or anesthesia. There are no toxic hazards, since botulinum toxin doses are extremely low.
After the procedure, patients may immediately resume normal activities, but they are asked to avoid massaging or touching the area, exercising or lying down for the first three hours, in order to allow the toxin to settle in the injected site.
Effects start showing within 72 hours after treatment, with full results seen 15 days after the application. Effects last for approximately 4 to 6 months.
Botulin toxin is not recommended for use in people with certain neuromuscular disorders such as myasthenia gravis or in individuals taking certain medications.