Suhaga (Borax) comes in handy here. Take 5 grams of Suhaga, 1 tbsp of Yoghurt (Dahi) and 1 tbsp of Coconut oil. Put the Suhaga on a flat girdle/pan and heat it. It will splutter and flare up. When it has flared, remove, cool it and crush it into a fine white powder. Mix the Suhaga powder with Yoghurt and Coconut oil and apply it directly onto the scalp. Allow it to dry and then wash with a mild, herbal shampoo (Is your hair falling / greying ? )
Apply some Sweet Almond oil after bathing. Repeat the remedy once a week, every week for 6 weeks. The dandruff should never come back again.
Soak methi seeds overnight and grind it to a fine paste with water in the morning. Application of this paste over the scalp once in a week for 4 weeks controls and prevents dandruff and itching of the scalp.