Hi. Greetings. In women esp - Anaemia, hormonal issues environmental factors , pollution, stress, junk food and poor diet could cause you to lose hair. You'll probably need treatment with hair care lotions or serums - something that has vasodilator properties and improves thickness of hair and reduces hair loss. Have a good balanced nutritious diet.For dandruff you'll need an antifungal shampoo. See a dermatologist near you. Hope this helps. Let me know if you need any further assistance in this regard. Warm regards. Dr Govind S Mittal.