Why do some people have different colored hair?

Hair color is determined by the amount of melanin in the hair shafts. Melanin is a pigment that is produced by cells in the hair follicles. There are two types of melanin: eumelanin and pheomelanin. Eumelanin is responsible for brown and black hair, while pheomelanin is responsible for red hair. The amount and type of melanin that a person has is determined by their genes.

Some people have different colored hair because of their ethnicity. For example, people of African descent typically have black hair, while people of European descent typically have blond, brown, or red hair. This is because the genes that control hair color are different in different populations.

Other people have different colored hair because of a condition called albinism. Albinism is a genetic disorder that causes a person to have very little or no melanin in their skin, hair, and eyes. People with albinism typically have white hair and pale skin.

Finally, some people have different colored hair because they dye their hair. Hair dye can be used to change the color of a person's hair to any color they desire.