I suffer from autoimmune disease and started losing hair rapidly. Even started to see baldness in some areas and that frightened me very much. I have used the product for 2 years. In the first year intensively and then intermittently. After just 3 months, the hair loss stopped and the hair began to grow. I am very satisfied with the product. There were no side effects. I gave it to my mother a few months after I started. She noticed immediate hair regrowth also!