Age spots also called liver spots and solar lentigines are flat gray, brown or black spots. They vary in size and usually appear on the face, hands, shoulders and arms areas most exposed to the sun. Though age spots are very common in adults older than age 40, they can affect younger people as well. True age spots are harmless. For cosmetic reasons, age spots can be lightened with skin-bleaching products or removed. However, preventing age spots by avoiding the sun and using sunscreen may be the easiest way to maintain your skin's youthful appearance and to avoid these dark skin spots.