Frown lines are the result of squinting eyebrows into a fold. These unattractive folds and furrows are caused by the repeated action of underlying muscles. Years of squinting and frowning tend to leave deep wrinkles in the skin between the eyebrows and on the bridge of the nose, across the forehead, and at the corners of the eyes. Frown lines may produce an angry look that can detract from a pleasant facial appearance.
Dermatologic surgeons can now soften these wrinkles and lines by a simple injection of botulinum toxin.
Botulinum toxin type A (BOTOX®) is a purified substance derived from a bacteria that blocks the nerve signals from the brain to the muscle. By injecting very tiny amounts into a specific facial muscle, only the impulse of that muscle will be blocked, causing a local relaxation and weakness. Botulinum toxin type A (BOTOX®) has been used since 1980 to treat many muscle disorders, such as lazy eye, and uncontrolled blinking. It was developed for cosmetic use by dermatologic surgeons 1987. The FDA has granted approval to botulinum toxin type A (BOTOX® COSMETIC) for the temporary improvement in the appearance of moderate to severe glabellar vertical lines in adult men and women 65 or younger.
Botulinum Toxins are derived from the bacteria that causes botulism. These products work by immobilizing the muscles that cause lines and wrinkles. Type A products include Botox® and Dysport®. They require injections 2 to 4 times a year. Type B products, such as Myobloc®, tend to be longer lasting. Some people are naturally resistant to botulinum toxins and cannot use these products.