Facial hyperpigmentation shows up as flat patches or spots that are darker than your surrounding skin. The color ranges from light brown to deep brown or black depending on your skin tone, though some types appear blue-gray, pink, or purple. What it looks like in detail depends on which type of hyperpigmentation you’re dealing with, because each one has a distinct pattern, location, and shape on the face.
The General Appearance
Hyperpigmentation on the face is almost always flat against the skin rather than raised. The patches can be as small as a few millimeters (like a pencil eraser) or span several centimeters across the cheek or forehead. On lighter skin, the spots tend to look tan or medium brown. On darker skin, they often appear deep brown to black. Some deeper forms of pigmentation, where excess color sits in the lower layers of skin rather than the surface, take on a blue-gray or slate-colored tone instead of brown.
The borders vary by type. Some spots have crisp, well-defined edges you can trace with your finger. Others fade gradually into the surrounding skin with blurry, irregular margins. Symmetry is another useful clue: certain types of hyperpigmentation appear in near-identical patterns on both sides of the face, while others show up randomly wherever the skin was previously irritated or sun-exposed.
Melasma: Symmetrical Patches on Both Sides
Melasma is the most common cause of facial hyperpigmentation, especially in women and people with deeper skin tones. It presents as symmetrical, hyperpigmented patches with irregular borders and uniform coloration. The color within each patch tends to be consistent rather than mottled.
There are three classic distribution patterns. The centrofacial pattern is the most common, affecting the forehead, cheeks, nose, and upper lip. The malar pattern is limited to the cheeks and nose. The mandibular pattern follows the jawline. What makes melasma distinctive is that mirror-image quality: if there’s a patch on your right cheek, there’s usually a matching one on your left. The patches can range from light brown to a muddy, grayish brown. A grayer tone typically signals that the pigment sits deeper in the skin, which also makes it harder to treat.
Post-Inflammatory Hyperpigmentation
If you’ve ever had a pimple, a rash, or a scratch on your face that healed and left behind a dark mark, that’s post-inflammatory hyperpigmentation (PIH). These spots appear as dark, flattened marks at the exact site of the original injury or inflammation. They range in color from brown to black depending on the extent of damage and your skin tone.
PIH is easy to recognize because its shape and location always match a previous wound or breakout. A cluster of dark spots on your chin and jawline likely maps to where acne was active. A streak across your forehead might trace back to an allergic reaction or a burn. Unlike melasma, PIH is not symmetrical. It’s scattered wherever inflammation happened. These marks are flat, never raised, and they tend to fade on their own over months, though in darker skin tones they can persist for a year or longer without treatment.
Sun Spots and Age Spots
Solar lentigines, commonly called sun spots or age spots, are well-defined flat or slightly raised spots that range from several millimeters to a few centimeters across. They have sharp, clearly demarcated borders, sometimes with a slightly moth-eaten or scalloped edge. The color is a uniform tan to dark brown.
These spots cluster on the parts of your face that get the most sun exposure: the forehead, temples, cheeks, nose bridge, and the backs of the hands. They become more common after age 40 but can appear earlier with significant sun exposure. Unlike melasma, sun spots are individual lesions with distinct borders rather than large diffuse patches. They don’t fade seasonally the way melasma often does, and each spot stays roughly the same size over time.
Dark Circles Under the Eyes
Periorbital hyperpigmentation, or dark circles, falls into distinct visual categories. The pigmented type appears as a brown hue under and around the eyes. The vascular type looks blue, pink, or purple, caused by blood vessels showing through thin skin over the inner lower eyelid. A mixed type combines both.
You can do a simple test at home to figure out which type you have. Gently stretch the skin of your lower eyelid with a finger. If the darkness spreads out and deepens to a more purple or violet shade without fading, the cause is likely vascular, meaning visible blood vessels beneath thin skin. If the color stays brown and doesn’t change much with stretching, it’s a pigmentation issue. The vascular type tends to be most noticeable on the inner part of the lower eyelid and can worsen with fatigue, allergies, or hormonal shifts.
Hori’s Nevus: Blue-Gray Speckles on the Cheeks
Hori’s nevus is a type of acquired pigmentation most commonly seen in Asian women, and it’s frequently mistaken for melasma. It appears as bilateral, speckled blue-brown or slate-gray macules clustered on the cheekbones and malar area. Unlike melasma’s smooth, uniform patches, Hori’s nevus looks speckled, like a scattering of small individual dots rather than a continuous wash of color. It can also appear on the upper eyelids, the sides of the forehead, and the nose.
The blue-gray color is the key distinguishing feature. About 63 percent of Hori’s nevus cases show blue-brown or gray pigmentation, and roughly half display the speckled homogeneous pattern that separates it from melasma under close examination. This color signals that the excess pigment sits deep in the dermis rather than the surface epidermis. That depth is also why Hori’s nevus doesn’t respond to the same topical treatments that work for surface-level pigmentation.
When a Dark Spot Looks Different
Most facial hyperpigmentation is harmless. But occasionally a dark spot can signal something more serious, like melanoma. Dermatologists use the ABCD criteria to flag concerning spots: Asymmetry (one half doesn’t match the other), Border irregularity (ragged or notched edges), Color (uneven color within the same spot, or very dark pigmentation), and Diameter (larger than about 6 millimeters, roughly the size of a pencil eraser).
Research suggests that color darkness is actually the most sensitive predictor of melanoma among these criteria. The darker a skin lesion is, the more likely it warrants evaluation. What should catch your attention is a spot that looks different from your other spots, has multiple colors within it (brown mixed with black, blue, or red), or is changing in size, shape, or color over weeks to months. A benign sun spot or PIH mark is uniform in color and stable. A spot that’s evolving or that stands out as visually distinct from everything else on your face is worth having examined.
Telling the Types Apart
Because multiple types of hyperpigmentation can coexist on the same face, and overlapping presentations are common, here’s a quick visual comparison:
- Melasma: Large, symmetrical patches with blurry borders. Brown to grayish-brown. Forehead, cheeks, upper lip, nose. Often darkens in summer.
- Post-inflammatory hyperpigmentation: Scattered dark marks that match previous breakouts or injuries. Brown to black. Asymmetrical. Slowly fading.
- Sun spots: Small, individual spots with sharp borders. Tan to dark brown. Sun-exposed areas. Stable over time.
- Periorbital pigmentation: Brown, blue, or purple discoloration limited to the under-eye area. Can be pigmented, vascular, or both.
- Hori’s nevus: Speckled blue-gray dots clustered on the cheekbones. Bilateral but discrete rather than diffuse. Does not fade seasonally.
Color and pattern are your two best clues. Brown and flat usually means surface-level pigment that responds to topical care and sun protection. Blue-gray tones point to deeper pigment that typically needs professional treatment. Symmetrical patches suggest melasma or Hori’s nevus. Random scattered marks suggest PIH or sun damage. Knowing which pattern matches what you see in the mirror is the first step toward the right approach.