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here there is no big pathological cause still you need to check your TSH
and Hb levels. if they are normal then go as below. if not then plz visit the physician.
a best home remedy i will suggest is start ARNICA hair oil permanently.(stop using your present one) it is a world wide famous homeopathic
hair tonic, i m sure you will be happy with the result. also you need to improve your Hb status, take rich protein diet, plenty of green leafy veg, fruits, juices,milk, plenty of water etc. only external thing cant be helpful to prevent hair loss. you should actively start working for healthy food that will help you.
I hope I answered your query. Wish you good health.