Search results
Results from the WOW.Com Content Network
Freckles are not a skin disorder, but people with freckles generally have a lower concentration of photo-protective melanin, and are therefore more susceptible to the harmful effects of UV radiation. It is suggested that people whose skin tends to freckle should avoid overexposure to sun and use sunscreen. [3] [4]
Freckles and moles are formed where there is a localized concentration of melanin in the skin. They are highly associated with pale skin. They are highly associated with pale skin. Nicotine has an affinity for melanin-containing tissues because of its precursor function in melanin synthesis or its irreversible binding of melanin.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 February 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 ...
These foods send a signal to the body to store fat. Dr. Howard echoes these sentiments, explaining, "Ingesting a high volume of high sugar foods and especially carbohydrates leads to increased fat ...
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.
Eumelanin is the dominant form of melanin found in human skin. Eumelanin protects tissues and DNA from radiation damage by UV light. Melanin is produced in specialized cells called melanocytes, which are found in the lowest level of the epidermis. [85] Melanin is produced inside small membrane-bound packages called melanosomes.
Other skin lighteners during the 16th century containing mercury and acidic ingredients were more harsh, and would remove the superficial epidermis of the skin or stop the production of melanin altogether. [1] Some sources state that the faithful application of ceruse by many was a result of the side effects caused by its lead compounds.
Tyrosinase is an enzyme needed in melanin synthesis in the melanin producing cell of the skin, the melanocyte. By reducing the activity of tyrosinase, β-arbutin reduces the synthesis of melanin, leading to a lighter skin tone and the diminished appearance of hyperpigmentation. It is not as potent an inhibitor of tyrosinase as α-arbutin. [6]