Freckles are flat, circular small spots of melanin on human skin in people of fair complexion. The spots develop randomly on the skin, especially after repeated exposure to sunlight. They may vary in color - they may be red, yellow, tan, light-brown, brown, or black. They are usually more often seen in the summer, especially among lighter-skinned people and people with light or red hair. Both men and women get freckles at an equal rate.
There are two basic types of freckles - ephelides and lentigines. Ephelides, are flat red or light-brown spots that typically appear during the sunny months and fade in the winter. Lentigines, are small tan, brown, or black spots which tend to be darker than an ephelis-type freckle and which do not fade in the winter.