Age spots (called sun spots, liver spots and solar lentigines) are the result of excess production of melanin, or skin pigment. They vary in size but tend to be well-defined, uniformly coloured areas of brown or greyish pigment that generally show up on the hands, face, neck, and chest.
The ageing process is the main reason for these spots but they also occur from years of exposure to direct sunlight, often as a result of sunbathing or heavy use of sunbeds. Age spots are most likely on those over 40. Age spots aren’t dangerous and don’t cause any health problems but treatment is available if you don’t like the way they look.