We must first understand why our hair starts to grey.
Why Hair Greys
Hair colour is produced by a variety of factors like nutritional intake, hereditary conditions and the lifestyle we lead. The most important among them in determining hair colour is melanin.
Melanin is produced by melanocytes that are found within the layers of the hair follicle. When hair is produced via cell division in the hair bulb, newly produced melanin accumulates in the cells and colours the hair as it emerges from the follicle.
At a certain point of time, the melanocytes begin to make little or no melanin and therefore the hair is virtually transparent. We see the colour of the dead cells comprising the hair.
The reason the melanocytes don't work as well as they used to be is because of a decrease in the production of the hormone that stimulates their functioning.
Our genes make a big difference in the ageing process. In general, the greying of hair begins at the age of around 30 years for men and around 35 years for women.
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