Illustration: Projection of mimic musculature of pale face picture of a young woman. Botolinum toxin is naturally available bacterial toxin which is produced by Clostridium botulinum as a toxin. Botolinum toxin type A blocks the cholinergic impulse transmission at the motor endplate blocking the liberation of acetylcholine and causes a chemic denervation of the muscle. Because of this, Botox is used to treat wrinkles, migraine and hyperhidrosis. The enlargement shows a motor endplate where Botox acts.