Hello Aman.. Causes of hair loss/thinning of hair are: 1. Environmental factors 2. Stress 3. Deficiency of certain minerals, vitamins & amino acids in diet. e.g. Iron, zinc, Vit B complex, lysine. 4. Hormonal factors. e.g. Testosterone, Thyroxine 5. Any incidence of surgery, shock, etc. Management includes: 1. Treating the underlying cause 2. Avoidance of stress 3. Dietary modifications 4. Minoxidil solution to be applied locally to stimulate the hair follicles 5. Multivitamin & multi mineral supplementation But these medications have to be used regularly under the guidance of a Dermatologist...as hair loss tends to return on stoppage of these medications. Those cases which do not respond to medical therapy, are managed by hair transplantation. So...instead of doing self medication, it will be better to consult a Dermatologist to find out the underlying cause & start treatment accordingly. Wishing you a Good Health. Let me know if I need to clarify further. Thanks & take care.