Question

on which factors does hair colour depend?

Answer 1

I hope this is helpful

you have dark skin or lightskin depends on the amount and type of melanin produced in your skin. There are two types of melanin and the relative amounts of each determine your skin and hair colouring. Phaeomelanin is responsible for yellow or red colour.

Answer 2

One of the major factor is Heredity. But apart from heredity, Its depends on our environment, food and our lifestyle. the Geographical area matters, our food also matters.