Neurotoxins, also known as neuromodulators, are a non-surgical cosmetic treatment designed to temporarily relax the muscles that cause wrinkles and lines in the face. The most common neurotoxin used in cosmetic treatments is botulinum toxin type A, which is marketed under various brand names such as Botox, Dysport, and Xeomin.

Neurotoxins work by blocking the signals between nerves and muscles, which reduces muscle activity and prevents the formation of wrinkles and lines. They are most commonly used to treat frown lines, forehead lines, and crow's feet around the eyes. The procedure is quick and relatively painless, usually taking only a few minutes to complete. Patients may experience some mild discomfort during the injection process, but no anesthesia is required.