Oil your scalp atleast twice a week. Keep changing your pillow covers. Use pillow covers made of silk. Use sulphate and paraten free shampoos. Hope it will help!
Wash your head properly,you can use mama earth's tea tree oil works great to remove dandruff also mama earth's special anti dandruff shampoo (not chemical based product). You can also apply curd on your scalp,that's home made remedy for dandruff.