Botulinum toxin is a substance which is produced by bacteria in a state of a vacuum and which weakens the muscular system in the human organism. For about 20 years the botulinum toxin injections belong to the fixed repertoire of a plastic surgeon. 20 years ago muscle spasms in the eye and neck were eased by a precise injection of botulinum toxin. This mehtod is still used today. But today botulinum toxin has established itself as an effective method for wrinkle reduction within plastic and aesthetic surgery. The treatment is successful because the botulinum toxin effectively weakens the mimic muscular system which is responsible for wrinkle production. As the skin is narrowly intertwined with the mimic muscular system which lies underneath the skin, the skin is smoothened and straightened by the relaxation of the muscular system through the botulinum toxin. Usually it takes a few days until the full result and straightening of the skin is fully visible. At the request of the patient, the skin can be numbed prior to the injections with a numbness cream. Alleviation of pain is achieved in any case through an ice cooling pack before the injections take place.