The natural treatment of hair whiteness is possible according to the medical experts. Every one like to maintain the original clour of his/her hair especially black hair in Asian community.
Black hair is the darkest and most common of all human hair colors globally. It is a dominant genetic trait, and it is found in people of all backgrounds and ethnicities. It has large amounts of eumelanin and is less dense than other hair colors. Sometimes very dark brown (blackish-brown) hair is mistaken for black because the potency of eumelanin in the hair gives it the lustrous properties of black hair, using the rationale that "brown" does not do the darkness of the shade justice. Black hair is known to be the shiniest of all hair colors. In English, black hair is sometimes described as "soft-black", "raven black", or "jet-black". The range of skin colors associated with black hair is vast, ranging from the palest of white skin tones to a tan olive complexion (brown skin) to black skin. Black-haired humans can have dark or light eyes.
This is a home remedy in below list but if in case of severity consult your physician.