Botulinum toxin is a protein that blocks the messages that travel from a nerve to a muscle. By blocking the messages, it helps relax the muscles. Because of this, it has been used by doctors and nurses to treat a variety of conditions for more than 40 years. In cosmetic medicine, we use botulinum toxin to treat wrinkle lines.
When you make an expression, such as frowning or smiling, your muscles contract to create the expression. We can use botulinum toxin to stop the muscle contracting and decrease the lines that you get when you make expression.