response: That I do not know. For brown haired people, they typically get called a brunette, do you get called that?
original_response: I'm not sure I would think genetics. People that have brown hair are usually called brunette's. Do you get called that?
history: I have brown hair, quite common I guess. Yes, it is below black hair for most common hair color. And what is the least common hair color? Red hair naturally happens in 1 to 2% of the human population although I'm not sure fi it is the least common hair color. I say 1 or 2% probably makes it the least likely. Do you know what makes hair dark like my brown? It has to do with pigment. So high levels of eumelanin makes the hair dark while lower levels of pheomelanin make the hair lighter. Interesting.  And any idea what makes some hair curly?
knowledge: People with brown hair are often referred to as brunette, which in French is the feminine form of ''brunet,'' the diminutive of ''brun'' (brown, brown-haired or dark-haired).