Botuline Toxin is a muscle relaxant, known by everyone under the name Botox. Botox is a brand name, just like Dysport, BoCouture, Azzalure and Vistabel. The active substance in all these products is Botulinum toxin. Botox is a medication. It blocks the transmission of nerve impulses from the nerves to the muscles. As a result, it reduces the strength of the muscles. This relaxes the facial muscles and your wrinkles fade.