Hair Dandruff Treatment:

Apply a paste of boiled Bengal gram (kala chana) and fenugreek seeds (methi Dana), soaked overnight. You could mix two teaspoons of fenugreek seeds in a small bowl of Bengal gram.
Even washing hair after applying a paste of Bengal gram flour (besan) for half an hour, keeps hair clean and soft.

For treating mild dandruff:

massage hair with coconut oil mixed with the juice of one lemon. Follow it with a hot towel treatment. The massage really boosts bloods circulation.

For oily dandruff:

(there’s both the dry and oily variety) apply multani mitti (fuller’s earth) but for no longer than 10 minutes, so that it comes off easily.