Repeat treatment is suggested every 3-5 months to keep the muscles sufficiently weakened to allow the furrows to smooth out. In practice this means coming three to four times in the first year. After the first year the intervals between treatment may be a little longer so that you need it only twice a year.
Tension headaches and migraine for some patients have disappeared. These occurred in patients who were recruiting forehead and brow muscles during periods of stress and tension. When these muscles were relaxed, the headaches faded. It has been found to help wit headache in about 30% of migraine sufferers.