Human Hair Color
Hair color is the pigmentation of hair follicles due to two types of melanin: eumelanin and pheomelanin. Generally, if more eumelanin is present, the color of the hair is darker; if less eumelanin is present, the hair is lighter. Levels of melanin can vary over time causing a person's hair color to change, and it is possible to have hair follicles of more than one color.
Particular hair colors are associated with ethnic groups. The shades of human hair color are assessed using the Fischer–Saller scale. The Fischer–Saller scale, named after Eugen Fischer and Karl Saller, is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (light blond), B to E (blond), F to L (blond), M to O (dark blond), P to T (brown), U to Y (dark brown/black) and Roman numerals I to IV (red) and V to VI (red blond). See also the Martin–Schultz scale for eye color.
Read more about Human Hair Color: Genetics and Biochemistry of Hair Color, Natural Hair Colors, Hair Coloring
Famous quotes containing the words human, hair and/or color:
“Why should I seek for love or study it?
It is of God and passes human wit;
I study hatred with great diligence,
For that’s a passion in my own control,
A sort of besom that can clear the soul
Of everything that is not mind or sense.”
—William Butler Yeats (1865–1939)
“The winds awaken, the leaves whirl round,
Our cheeks are pale, our hair is unbound,
Our breasts are heaving, our eyes are agleam,
Our arms are waving, our lips are apart....”
—William Butler Yeats (1865–1939)
“The great God endows His children variously. To some he gives intellect—and they move the earth. To some he allots heart—and the beating pulse of humanity is theirs. But to some He gives only a soul, without intelligence—and these, who never grow up, but remain always His children, are God’s fools, kindly, elemental, simple, as if from His palette the Artist of all had taken one color instead of many.”
—Mary Roberts Rinehart (1876–1958)