There are two main types of melanin that determine hair colour. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment. The amount of the different pigments determines hair colour.
There are two main types of melanin that determine hair color. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment. The amount of the different pigments determines hair color.
Here's what the science says. There are two main types of melanin that determine hair colour. Eumelanin is a black-brown pigment and pheomelanin is a red-yellow pigment. The amount of the different ...