Question

why is hair black in colour?

Answer 1

Hair is black in colour due to the presence of a pigment called Eumelanin. It's responsible for the black or brown colour of the hair

Answer 2

:  Color of hair is black due to melanin substance. It is a dominant genetic trait and it is found in all people. Melanin is a substance that caused for hair color and skin color of people. The presence of black eumelanin in high concentration makes our hair black