The amount of eumelanin pigment determines how dark our hair is. We all have genes to produce both pigments. There are two types of melanin: eumelanin and pheomelanin. If these cells don’t make much melanin, your hair turns blonde. When these cells make a lot of melanin, your hair turns brown or black. These cells live at the bottom of each strand of hair. This melanin pigment is made by special cells called melanocytes. It’s the same pigment that gives skin its color! The most important genes here are ones that make pigment, which is what gives hair its color. And since genes can turn on and off throughout our lives, this means your hair color can change! Hair can come in many different colors, and can change with age! ( Wikimedia) But it’s not just by the genes we have, but also by whether those genes are turned on or turned off. Hair and eye color are mostly determined by our genes.
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