The frequency of follow up appointments depends on two things: a) the type of hair loss that the patient was diagnosed with and b) how whether the patient's hair density is improving, staying the same or getting worse. If a patient's hair loss is stable, follow up might be every 9 months or every 18 months or Dr. Donovan might not recommend any further follow up at all. For those patients with rapidly progressive hair loss, follow up appointment might be recommended every 3-4 months. Your safety is important to us and we have patients with dozens dozens of different types of hair loss in our practice at the Donovan Clinic. Some are short term patients, coming to see us just for a second opinion on their diagnosis or treatment. Others are long term patients seeing us a various intervals during the year.