Discoloration is a fact of life. The sooner you see dark spots and brown patches has a lot to do with heredity and lifestyle, but by a certain age, we all get some. There are several factors that cause skin to become darker (hyperpigmentation), starting with an increase in melanin, the substance which regulates pigment. Primarily, hyperpigmentation is caused by exposure to the damaging ultraviolet (UV) rays of the sun. But dark spots can also...
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