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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).
A men's hairstyle (though women have adopted as well) in which the hair is cut short and formed into short spikes with hair gel or hair spray. The hair is bleached such that the tips of each spike will be light blond, usually in contrast to the wearer's main hair color. Frosted tips were prominent throughout the late 1990s.
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 ]
A close-up view of brown hair Woman with brown hair. Brown hair, also referred to as brunette (when female), is the second-most common human hair color, after black hair. It varies from light brown to dark hair. It is characterized by higher levels of the dark pigment eumelanin and lower levels of the pale pigment pheomelanin.
Papuan women with kinky hair. Kinky hair is a uniquely human characteristic, as most mammals have straight hair, including the earliest hominids. [11] Robbins (2012) suggests that kinky hair may have initially evolved because of an adaptive need amongst humans' early hominid ancestors for protection against the intense UV radiation of the sun in Africa.
This overproduction causes depletion of the melanocyte stem cells which are required to produce melanin, the pigment responsible for hair color. [ 2 ] Premature greying of hair has been observed with greater frequency among certain families, suggesting a familial predisposition for the condition.