Hair fall at such an early age clearly reflects either some nutritional deficiency in your body or some medical problem. So, first of all, root causes should be detected and treated accordingly. Start taking care of your eating habits. Your diet should include beans, sprouts, green leafy vegetables, nuts (almonds) and amla. Use mild and gentle shampoo. You can also use a home made head pack: - soak methi seeds overnight. Grind them in the morning and add eggs to this paste. Apply it to your scalp. Let the pack stay for 2 hrs. Then wash it off with water. The regular use will help in controlling hair fall and will promote hair growth too.