Age spots are flat, painless patches on the skin that range in color from yellow or light tan to dark brown or black. Each spot is typically one uniform color, and they can be as small as a few millimeters (the size of a freckle) or grow to a few centimeters across (larger than a pencil eraser). They show up on areas that have gotten the most sun over your lifetime: the backs of your hands, your forearms, face, shoulders, and upper chest.
Color, Shape, and Texture
The color of an age spot depends largely on your natural skin tone. On lighter skin, they tend to appear tan or light brown. On medium skin tones, they lean darker brown. On very dark skin, they can look black, and they may be harder to notice against surrounding skin. The key visual feature is that a single age spot is one consistent color throughout, without streaks, speckles, or color variation within the spot itself.
The shape is usually round or oval with a clearly defined edge. The border looks smooth and regular, not jagged or blurred. Age spots are completely flat. If you run your finger over one, it should feel the same as the skin around it. There’s no raised bump, no rough or scaly texture, and no tenderness. They can appear alone or in clusters, especially on the backs of the hands where groups of spots sometimes merge into a larger patch.
Where They Typically Appear
Age spots develop on skin that has had years of cumulative sun exposure. The most common locations are the backs of the hands, the forearms, the face (particularly the forehead, temples, and cheeks), the tops of the shoulders, and the upper back. If you wore V-neck shirts for decades, you might see them on your upper chest. They rarely appear in areas that are usually covered by clothing, like the torso or inner arms, unless those areas got significant UV exposure from tanning beds or other sources.
How They Form
Your skin contains cells that produce melanin, the pigment responsible for your skin color. Over years of UV exposure, some of these cells become overactive. Instead of distributing pigment evenly, they produce melanin in high concentrations or clump it together in one area. The result is a visible dark patch. This is why age spots tend to appear after age 40 or 50, once the cumulative UV damage from decades of sun exposure reaches a tipping point. However, younger adults with significant sun exposure or tanning bed use can develop them earlier.
How They Change Over Time
Age spots tend to be permanent once they appear. Without treatment, they don’t fade on their own. Over the years, existing spots may darken slightly with continued sun exposure, and new spots often develop alongside older ones. They don’t grow rapidly, itch, bleed, or change shape. A spot that stays flat, uniform in color, and stable in size over months and years is behaving like a typical age spot.
Age Spots vs. Seborrheic Keratoses
A common lookalike is seborrheic keratosis, a benign growth that also appears on sun-exposed skin in middle age and beyond. The easiest way to tell them apart is texture. Seborrheic keratoses are raised, often look “stuck on” the skin surface, and have a waxy or rough feel. Under close examination, they may have tiny cracks, fissures, or what look like small pore-like openings on their surface. Age spots, by contrast, are completely flat and smooth. If a brown patch on your skin has any height or roughness to it, it’s more likely a seborrheic keratosis than an age spot. Both are harmless.
When a Spot Doesn’t Look Right
The reason people search for what age spots look like is often because they’ve found a mark on their skin and want to know if it’s something to worry about. Dermatologists use a simple checklist called the ABCDEs to flag spots that need a closer look:
- Asymmetry: one half of the spot doesn’t mirror the other half.
- Border: the edges are uneven, ragged, or blurred instead of smooth.
- Color: the spot contains multiple colors or shades (brown mixed with black, red, white, or blue) rather than one uniform tone.
- Diameter: the spot is larger than a pencil eraser (about 6 mm), though melanomas can sometimes be smaller.
- Evolving: the spot is changing in size, shape, color, or height, or developing new symptoms like itching, bleeding, or scabbing.
A normal age spot fails none of these checks. It’s symmetrical, has a clean border, is one color, and stays stable over time. If any spot on your skin hits one or more of these criteria, it warrants professional evaluation.
There’s also what dermatologists call the “ugly duckling” sign. If you have many freckles or spots and one looks noticeably different from all the others, whether it’s darker, a different shape, more raised, or just seems “off” compared to its neighbors, that’s the one to have examined. A typical age spot blends in with other age spots on your body. It doesn’t stand out as the odd one.