For preventing hair from turning grey, Indian gooseberry or Amla is considered the best natural remedy.
Cut the fruit in pieces, dry it, then boil the pieces in coconut oil till solid matter becomes like burnt dust.
This dark oil is used to prevent greying. The water in which dried amla is soaked overnight is used to nourish hair.
This water should be used for the last rinse while washing the hair. Amla is an excellent remedy for graying of hair. The use of Amla is a tried and tested method in parts of Asia for centuries. It is a home remedy. However, if the hair are turning grey very fast, one is advised to consult a doctor as there is no substitute for proper medication.