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Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
However, the darkest shade of black hair, raven-black, does not behave as other hair would in the light. The name of the color comes from a raven’s wing due to similarities in behavior. Appearing as being almost blue in some conditions, this hair color is mostly found with people from Africa, South and Southeast Asia, Central Asia and Latin ...
Xanthoria parietina is a very pollution-tolerant species. In laboratory experiments, this species can tolerate exposure to air contaminants and bisulphite ions with little or no damaging effect. [19] It is also tolerant of heavy metal contamination [20] and to nitrogen pollution. [21]
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).
Patients who shave the affected area only once will generally experience a recurrence of the infection, since, the bacteria begin to develop the concretions once again as the hair grows back. [ 2 ] Corynebacterium infections are related to excessive sweating ; for this reason, deodorants containing an aluminum chloride solution may be used for ...
The thallus of Parmotrema perlatum is large, light-grey to pale-blue patch-shaped with rounded and ruffled lobes and often with black hair-cilia at the edges. Distinguishing features of the lichen include its conspicuous soralia (reproductive structures) near the lobe edges, curled leaf-like lobes, and a narrow, shiny, and sometimes wrinkly ...
The light is absorbed by melanin in the hair which heats and damages the hair follicles to remove it. Laser hair removal has found to delay hair regrowth by up to 3 months. [ 28 ] Laser hair removal can cause redness, edema , first to second degree burns, skin damage, and pigmentation. [ 26 ]
Hypertrichosis (better known as Werewolf Syndrome) is an abnormal amount of hair growth over the body. [1] [2] The two distinct types of hypertrichosis are generalized hypertrichosis, which occurs over the entire body, and localized hypertrichosis, which is restricted to a certain area. [1]