Oh . Maybe I know something . If somebody lived in an area with hard water for a long time , he may get used to the water and nothing will be done to him ; But if someone lived in an area with soft water and then he moved to a place where the water is hard , then it may led him to get hair loss ! I set the post just because I notice this phenomenon and you gave me an exact example . Try to use soft water in your life . Wish you good luck ! Thanks my friend