Usually, our hair will turn darker because eumelanin production increases as we age (until we go gray, that is). People with red hair have high levels of the pigment pheomelanin YURII MASLAK/Shutterstock These genes switch on and off at different points in our lives – hence the reason our hair changes color as we get older. There are several genes that are involved in melanin production and that can, therefore, affect our hair color. It is what gives you your natural hair color.īut this is where it gets interesting. The total amount of melanin and the ratio between eumelanin and pheomelanin is unique to you and entirely determined by your genes. If you have darker hair, you have higher levels of the pigment eumelanin. Redheads, therefore, will have more pheomelanin than their ashy-haired friends. Pheomelanin, on the other hand, affects the warmth of your hair. Eumelanin is responsible for how dark your hair is, meaning that people with lots of it tend to have dark brown or black hair. There are two specific types of melanin that together determine our natural hair color – eumelanin and pheomelanin. Melanin is an umbrella term for the group of pigments that control the natural coloring of our skin, hair, and eyes. Well, it comes down to melanin and exactly how much of it or how little of it we have.
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