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Sun tanning or tanning is the process whereby skin color is darkened or tanned. ... Melanocytes produce two types of melanin: pheomelanin (red) ...
This is the physiological purpose of sun tanning. Dark-skinned people, who produce more skin-protecting eumelanin, have a greater protection against sunburn and the development of melanoma, a potentially deadly form of skin cancer, as well as other health problems related to exposure to strong solar radiation , including the photodegradation of ...
Illustration of a melanocyte Micrograph of melanocytes in the epidermis. Through a process called melanogenesis, melanocytes produce melanin, which is a pigment found in the skin, eyes, hair, nasal cavity, and inner ear. This melanogenesis leads to a long-lasting pigmentation, which is in contrast to the pigmentation that originates from ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 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 ...
Skin cancer can absolutely appear in areas of the skin that tend to not get much sun exposure. Acral melanoma, in particular, is a subset of melanoma that grows on the palms and soles. People with ...
The number of melanocytes that each person will have may be predicted by genetics. Melanosomes, which are organelles containing melanin, must be transported and increased during hyperpigmentation and tanning, while they shrink during hypopigmentation. [4] Skin pigmentation is frequently caused by sun exposure.
Occasional extreme sun exposure that results in "sunburn" on areas of the human body is causally related to melanoma; [27] and such areas of only intermittent exposure apparently explains why melanoma is more common on the back in men and on the legs in women. The risk appears to be strongly influenced by socioeconomic conditions rather than ...
Photo: Getty Spray tans contain anywhere between 1 and 15 percent DHA -- a color additive that when inhaled or exposed to the eye nose and lip areas can cause severe headaches, nausea and dizziness.