What role does UVB light play in tanning?

UVB light plays a crucial role in the tanning process by stimulating melanocytes, which are the cells in the skin responsible for the production of melanin. When the skin is exposed to UVB rays, it triggers these melanocytes to produce more melanin as a natural defense against further UV exposure. This increase in melanin results in a darker skin pigmentation, which is commonly referred to as a tan. This mechanism helps protect the skin from damage caused by ultraviolet radiation.

In contrast, while UVB light does have various effects on the body, it is specifically the stimulation of melanin production that is directly related to the tanning process. Therefore, understanding the role of UVB in encouraging melanin synthesis is essential for both tanning enthusiasts and professionals in the tanning industry.