Sunspots are areas of increased pigmentation that are due to sun exposure. Other names for sunspots are age spots and liver spots. The medical term is solar lentigines, and they're one of the most common skin problems that develop in the second half of life. Age spots are a frustrating problem, but there are solutions. Try the simplest approach first, block pigment production. If that doesn't lighten the sunspots enough, the second option of sloughing off the pigmented layer or disrupting the pigment source are beneficial.