MICROANATOMY

Detailed explanation-1: -The less melanin, the more gray hair. If a person has gray hair that turns completely white, it means that there is no melanin in the keratin. This also means that the body has stopped producing melanin.

Detailed explanation-2: -Harvard scientists proposed that a failure of melanocyte stem cells (MSC) to maintain the production of melanocytes could cause the graying of hair. This failure of MSC maintenance may result in the breakdown of signals that produce hair color.

Detailed explanation-3: -However, the rate of hair colour loss is largely determined by your genes. The chances are that you will experience premature greying if your parents do. However, certain nutritional deficiencies and underlying medical conditions may play a role. In these cases, yes, white hair can turn black again.

Detailed explanation-4: -However, if the cause of premature greying of hair is genetics or the hair is greying due to natural ageing, it is impossible to reverse the melanin production.