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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 (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
Red hair, also known as ginger hair, is a human hair color found in 2–6% of people of Northern or Northwestern European ancestry and lesser frequency in other populations. It is most common in individuals homozygous for a recessive allele on chromosome 16 that produces an altered version of the MC1R protein.
Red or ginger hair may come in different shades, from strawberry blond to auburn. [1] With only 2% of the world's population having red hair, [ 2 ] red is the rarest natural hair-coloration. [ 1 ] The list includes people who have dyed their red hair into another color or whose red hair has gone grey with age, but not people who have dyed their ...
Naturally occurring red hair appears in a small minority of humans and is the rarest natural hair color, occurring in 0.6 percent of people. [2] A smaller percentage of humans, approximately 0.17 percent or 13 million, have a combination of red hair and blue eyes. [3]
A Uyghur child in Kashgar, China's Xinjiang region, with auburn hair. Auburn hair is a human hair color, a variety of red hair, most commonly described as reddish-brown in color. Auburn hair ranges in shades from medium to dark. It can be found with a wide array of skin tones and eye colors.
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Black hair is the darkest and most common of all human hair colors globally, due to large populations with this trait. This hair type contains a much more dense quantity of eumelanin pigmentation in comparison to other hair colors, such as brown, blonde and red. [ 1 ]
While the spectrum of eye colors is as vast as the human experience itself, one of them is the rarest eye color in the world that only a small percentage of the population possess.