Hair is made up of keratin which is a type of protein. Also iron and vitamin b5, b7 are known to provide nutrition to your hair. Good sources of these would be egg, chicken, fish, milk, curd,
paneer, sprouts, nuts like almonds (10-12/day), walnuts (2-3/day, dates, millets like bajra, ragi, garden cress seeds in porridges or soaked in water (halim. Sound sleep of 7-8 hours also contributes to your hair health. Yoga and meditation for stress reduction which is the main factor.