The colour of our hair depends on the amount of pigment (colouring matter) in it. Dark hair contains more of it than fair hair. This colouring matter is produced in our bodies and is controlled by the nervous system. If anything goes wrong with this control through illness but more often by wearing our in old age, then the hair turns grey or white.
Home » Kids Questions & Answers » Science & Mathematics Questions & Answers » Why does hair turn grey?
In December 2003, when Chinmay Dharmesh Modi was 9, his parents discovered that they were …