Brown hair (also referred to as chestnut and cinnamon) varies from light brown to almost black hair. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment phaeomelanin. Its strands are thicker than those of fair hair but not as much as those of red hair. People with brown hair are often referred to as brunettes, the feminine form, and brunets, the masculine term.
