HI thanks for posting your query
is caused by a fungus Mallassezia Furfur . in your case it is very severe, so you need to follow this:
apply a long contact antifungal lotion like noskurf overnight, alternate days
Wash with tar based shampoo like Ionax-T lotion alternate days
This may take about 15 days to 1 month to give visible results.
once it decreases apply novale lotion twice a week, then once a week as maintainance therapy
at times resistance develops to ketoconazole
so use cyclopirox olamine based lotion instead of novale
is safe antifungal and once a week dose does not normally cause side affects
and other antioxidants which are good for hair and have no side effects so tou can continue these .
hope this helps you