Hi
some say if you use amla it can prevent and may even reverse your hair back to a darker stage. also lemon and coconut oil is suppose to help. i also heard boiling fresh sage and using the water as a rinse helps.
maybe the amla oil works itself. but not when it is mixed with mineral oils and other artificial ingredients. remember most oils are not pure it is just a lil extract & artifical color.
Om Namah Shivaye