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Human skin color. Extended Coloured ( Afrikaans: Kleurlinge or Bruinmense) 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 individuals is caused by variation in pigmentation, which is the result of genetics (inherited ...
Health and appearance of Michael Jackson. Michael Jackson in 1977 at age 18 (left) and 1997 at age 38 (right) Michael Jackson was an American entertainer who spent over four decades in the public eye, first as a child star with the Jackson 5 and later as a solo artist. From the mid-1980s, Jackson's appearance began to change dramatically.
The actual skin colour of different humans is affected by many substances, although the single most important substance determining human skin colour is the pigment melanin. Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin colour of darker-skinned humans.
Dermatology. Carotenosis is a benign and reversible medical condition where an excess of dietary carotenoids results in orange discoloration of the outermost skin layer. The discoloration is most easily observed in light-skinned people and may be mistaken for jaundice. [1] [2] : 540 [3] : 681 Carotenoids are lipid-soluble compounds that include ...
The colour change was duplicated ex vivo by modifying the osmolarity of pieces of white skin. Colour change and iridophore types in panther chameleons: (a) Reversible colour change is shown for two males (m1 and m2): during excitation (white arrows), background skin shifts from the baseline state (green) to yellow/orange, and both vertical bars ...
Anoles - The majority of anoles ( Dactyloidae) can change their color depending on things like emotions (for example, aggression or stress), activity level, levels of light and as a social signal (for example, displaying dominance ). Frogs, e.g. gray treefrog and Peron's tree frog (which can change colour in less than one hour).
Dark skin. Dark skin is a type of human skin color that is rich in melanin pigments. [1] [2] [3] People with dark skin are often referred to as black people, [4] although this usage can be ambiguous in some countries where it is also used to specifically refer to different ethnic groups or populations. [5] [6] [7] [8]
Fitzpatrick scale. The Fitzpatrick scale (also Fitzpatrick skin typing test; or Fitzpatrick phototyping scale) is a numerical classification schema for human skin color. It was developed in 1975 by American dermatologist Thomas B. Fitzpatrick as a way to estimate the response of different types of skin to ultraviolet (UV) light. [2] It was ...