What is the process of increasing skin pigmentation due to UV exposure called?

The process of increasing skin pigmentation due to UV exposure is known as tanning. When the skin is exposed to ultraviolet (UV) radiation from sources like the sun or tanning beds, it triggers the production of melanin, the pigment responsible for the color of the skin. This response is a natural defense mechanism, as melanin helps absorb and dissipate UV radiation, protecting deeper layers of the skin from potential damage.

Tanning can occur in both the epidermis and deeper skin layers, with the immediate results typically appearing as a deeper or darker skin tone. The tanning process signifies the skin's physiological adaptation to UV exposure, and it often varies from person to person based on individual skin type, genetic factors, and the duration and intensity of the UV exposure.