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The toxic effects of UV from natural sunlight and therapeutic artificial lamps are a major concern for human health. Skin surface lipids, including unsaturated lipids such as squalene , sebaleic acid, linoleic acid , and cholesterol can be a subject of oxidation by singlet oxygen and ozone as well as free radicals.
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. "Skin pigmentation" redirects here. For animal skin pigmentation, see Biological pigment. Extended Coloured family from South Africa showing some spectrum of human skin coloration Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among ...
According to the Pew Research Center, 62% of US Latinos say that having a darker skin color affects their ability to get ahead. [93] This study also showed that 59% of Latinos say that having a lighter skin color helps Hispanic people get ahead. [93] 57% say that discrimination based on skin color towards Latinos is a "very big problem" in the ...
The Fitzpatrick scale has been criticized for its Eurocentric bias and insufficient representation of global skin color diversity. [9] The scale originally was developed for classifying "white skin" in response to solar radiation, [2] and initially included only four categories focused on white skin, with "brown" and "black" skin types (V and VI) added as an afterthought.
Skin colors according to von Luschan's chromatic scale. Von Luschan's chromatic scale (VLS) is a method of classifying skin color. It is also called the von Luschan scale or von Luschan's scale. It is named after its inventor, Felix von Luschan. The equipment consisted of 36 opaque glass tiles which were compared to the subject's skin, ideally ...
Sun poisoning is an extreme case of sunburn in which ultraviolet radiation inflames the skin. Bela Chatwin, 21, from Utah, had swollen up so much that her own sister didn't recognise her.
Categorization of racial groups by reference to skin color is common in classical antiquity. [7] For example, it is found in e.g. Physiognomica, a Greek treatise dated to c. 300 BC. The transmission of the "color terminology" for race from antiquity to early anthropology in 17th century Europe took place via rabbinical literature.
Sun tanning (3 C, 23 P) T. ... Color terminology for race; S. Skin color in the Book of Mormon; Skin lightening in the Middle East; Skin reflectance; V.