First a cause for your hair fall should be found out. Most commonly it is due to androgenetic alopecia, other causes are scalp diseases like dandruff, hormones problems (
thyroid diseases), deficiency in the food and many other causes. Ask your doctor for a diagnosis and approximately how long it will take to see improvement. If you want my opinion you could fix an appointment with me on practo. Warm regards. Dr. Rajdeep Mysore. Chirag Hospital Bangalore