Age spots, sometimes mistakenly called liver spots, are small, flat dark skin discolorations that occur on several places on the body, according to the Mayo Clinic. They are often most noticeable on the face, hands and chest. They are the result of exposure to the sun over the course of years or decades, and often occur in people older than age 40. They may resemble early skin cancer growths, but they are actually harmless. There are many methods available that can lighten age spots, including salicylic acid, which is commonly used to remove calluses.