BOTULAX is a peripheral muscle relaxant that contains purified botulinum toxin type A (in combination with haemagglutinin) and sodium chloride (excipient). The mechanism of action of the product is based on the ability of botulinum toxin type A to block the transmission of nerve impulses. Intramuscular administration of the toxin disrupts the synthesis of acetylcholine (a neurotransmitter that ensures neuromuscular conduction) and leads to temporary paralysis of the facial muscles. Frozen facial expressions help relax muscles and smooth wrinkles.