Thanks for the query. You could be suffering from female pattern baldness which is an increasing problem in today's society.
Hair care is a daily ritual shaped by age, gender and internal health.
The treatment typically consists of topical lotion (Minoxidil). Based on the cause of hair loss, certain specific medications can also be started. It also depends on the age of the patient and if planning f or pregnancy or not. Various issues need to be decided before initiating the treatment. The dosage and duration is decided by your dermatologist. You need to be patient with the treatment protocol as it takes months to see initial improvement.
It would be good if you could do the baseline investigations (liver function, kidney function, lipid profile) as well as specific tests like Vitamin B12 levels, Vitamin D levels, Iron and ferritin.
Hope it helps
Start on biotin supplements and food rich in iron content. Use a milder shampoo and consider frequent shampooing and conditioning.