Thanks for query,
You should take treatment of dandruff
shampoo.it contains selenium
sulphate in it.for at least 2-3 months.
Take Anti fungal medicine course orally.
Take healthy vitamin rich diet.
Avoid junk foods.
Take multi vitamin tablet having vitamin E
for at least 7-8 months.
It will take at least 8-9 months to give you result.so keep courage.