Oklahoma Cosmetology Board Practice Exam

Eumelanin is the predominant type of melanin found in humans, responsible for pigmentation in skin, hair, and eyes. It is brown to black in color, so it is responsible for the range of brown to black pigments. A and D are incorrect because red, yellow, orange, and violet pigments are produced by a different type of melanin, called pheomelanin. B is also incorrect because blue and green pigments are not produced by melanin.