Frown lines form when facial expressions are made as the muscle under the skin contracts. Over time, as your skin ages, these repeated expressions cause lasting frown lines. Neurotoxins, such as Xeomin®, are prescription medications that block the release of chemicals that cause these muscle contractions so frown lines are softened.
Xeomin® is made through a unique precision manufacturing process that isolates the therapeutic component of the molecule and removes the accessory proteins that don't play an active role in treatment. Xeomin® is a highly purified neurotoxin. Studies have not been performed to determine whether the presence or absence of accessory proteins has a long-term effect on safety or efficacy.