What is the main effect of melanin in the skin?

The primary role of melanin in the skin is to provide color, which contributes to the pigmentation of the skin, hair, and eyes. This natural pigment is produced by melanocytes, specialized cells located in the epidermis. The amount and type of melanin present gives individuals their unique skin tones, ranging from very light to very dark.

While melanin does offer some protection against UV radiation by absorbing and dispersing harmful rays, its fundamental purpose is pigmentation. Therefore, the main effect of melanin is indeed to give color to the skin. The other functions, such as regulating temperature and providing moisture, are performed by different skin components and do not relate directly to melanin's role.