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The body undergoes many hormonal changes during menopause, which can trigger increased melanin production and increased hyperpigmentation in the skin, in addition to everything else, according to ...
Several skin whitening agents, including tyrosinase inhibitors, have been found to cause an increase in the expression of tyrosinase, which by itself would increase melanin synthesis. [ 43 ] Microphthalmia-associated transcription factor (MITF) is the master transcription factor that controls the expression of TYR, TRP1, and TRP2, MART1 ...
Indoor tanning lotions accelerate the tanning process, by promoting the production of melanin. [1] Increasing blood flow to the skin is a proposed mechanism, which may in turn stimulate production of melanin by melanocytes. [2] Historically, indoor tanning lotions have contained no sunscreen and offer no protection from the sun. However, many ...
Secondly, there is an increase in production of melanin known as melanogenesis. [119] Melanogenesis leads to delayed tanning and first becomes visible about 72 hours after exposure. The tan that is created by an increased melanogenesis lasts much longer than the one that is caused by oxidation of existing melanin.
However, some studies show that melanin — another genetically inherited substance in the skin — can help protect against sun-induced aging. Darker skin tones contain more melanin than lighter ...
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Cross-sectional view showing skin tone becoming darker due to the production of more melanin to overcome DNA damage caused by UV radiation. Melanin is a natural pigment produced by cells called melanocytes in a process called melanogenesis. [6] Melanocytes produce two types of melanin: pheomelanin (red) and eumelanin (very dark brown). Melanin ...
Many forms of hyperpigmentation are caused by an excess production of melanin. [4] Hyperpigmentation can be diffuse or focal, affecting such areas as the face and the back of the hands. Melanin is produced by melanocytes at the lower layer of the epidermis. Melanin is a class of pigment responsible for producing color in the body in places such ...