Botulinum Toxin is a prescription drug. Botulinum Toxin A (Botox) is a naturally occurring bacterial protein (Clostridium botulinum) secreted. If it is injected into a muscle, it specifically blocks the nerve impulses there. As a result, the corresponding muscle can no longer be tensed as usual. Other nerve functions, such as feeling or touching through the skin, are not affected. Botulinum Toxin A has been used for many years to treat muscle spasms in the area of the eyes and forehead (eyelid spasms). Approval for wrinkle treatment in Switzerland has so far been granted for the correction of frown lines on the forehead. Further approvals are sought. Injecting very small amounts of botulinum toxin A inhibits the corresponding muscle in the face. Botulinum Toxin (Botox) has also been used for aesthetic treatments for several years. It is a substance that can block the release of a chemical messenger that triggers muscle contractions. At the same time, botulinum toxin can be used against excessive sweating (botulinum toxin in hyperhidrosis). It is important to have a comprehensive consultation with the doctor about risks and side effects.