Wash some roots and leaves of sesame plant. Boil them in water until half of the water remains in the pan. Wash your hair with this concentrate regularly. This imparts black color to your hair.
Massage your hair frequently with pure sesame oil. It not only makes your hair soft and smooth but also prevents them from turning gray. The best time to use this application is either at the bedtime or in the morning, one hour before taking a bath.
Soak a few soapnuts (reetha) in water overnight. In the morning wash your hair with vinegar and the soapnut water. Use this application frequently to prevent graying of hair.
Boil some neem (margosa tree) leaves in water, on a low flame for some time. Cool the water and wash your hair with this water regularly. This method of washing the hair makes them naturally black, stops hair fall and provides strength to the hair.
Neem water is also helpful in getting rid of any other hair problems such as pimples in head.