The change in color happens when there is overproduction of melanin, the pigment normally found in the skin, forming deposits that darken the skin color. Darkened skin can develop in people of all races. Melasma is increased skin pigmentation that usually occurs on sun-exposed surfaces of darkly complected individuals.

What is a darker complexion?

Dark skin is a type of human skin color that are rich in melanin pigments, especially eumelanin. People with very dark skin are often referred to as "black people", although this usage can be ambiguous in some countries where it is also used to specifically refer to different ethnic groups or populations.

What is darkening of the skin in a person called?

Hyperpigmentation refers to skin that has turned darker than normal where the change that has occurred is unrelated to sun exposure. Cells called melanocytes located in the skin, produce melanin. Melanin gives the skin its color.