Age-related spots typically happen due to an excess production of melanin, or skin pigment. Experts don’t know exactly why  develop, but some people do have a hereditary predisposition to them. In other words, you may have a higher chance  if they run in your family.

Other possible causes include skin aging, ultraviolet (UV) light exposure, such as tanning beds, and sun exposure. That’s why you’re most likely to develop age spots on areas of your skin that receive the most sun, such as:

• your face
• the backs of your hands
• your shoulders
• your upper back
• your forearms