Dark spots, explained: What causes hyperpigmentation, and how do you treat it?

That flat brown patch that showed up after your last breakout. The sunspots creeping in along your cheekbones. The overall "my skin tone isn't quite even" feeling you can't shake. If any of that sounds familiar, you're dealing with hyperpigmentation, one of the most common (and most Googled) skin concerns out there. The good news: once you know what's actually causing your dark spots, treating them stops feeling like guesswork.

What is hyperpigmentation, exactly?

Hyperpigmentation is the umbrella term for any patch of skin that turns darker than the skin around it, thanks to an overproduction of melanin (the pigment behind your skin, hair, and eye color). When your skin cranks out extra melanin in one concentrated spot, you get visible skin discoloration, sometimes small and freckle-like, sometimes a larger patch, sometimes just a general unevenness across your complexion.

Not all dark spots are created equal, though. Dermatologists generally group hyperpigmentation into three buckets:

 

• Sunspots (age spots): Flat, brown spots from years of cumulative UV exposure, usually on the face, hands, and chest.

• Melasma: Larger, symmetrical patches tied to hormonal shifts, like pregnancy or birth control, sometimes nicknamed the "mask of pregnancy."

• Post-inflammatory hyperpigmentation (PIH): The dark marks left behind after a breakout, cut, or irritation heals. This is what most people mean when they ask how to fade acne marks.

What causes dark spots in the first place?

Dark spots form when melanocytes (the cells that produce melanin) go into overdrive in response to a trigger. The usual suspects:

 

• Sun exposure: UV rays are trigger number one. Skin produces melanin as a defense mechanism, which is exactly why sunspots cluster on the areas that get hit with the most sun over the years.

• Hormones: Shifts in estrogen and progesterone during pregnancy or from hormonal birth control can trigger melasma.

• Inflammation: Acne, eczema, cuts, and over-exfoliating can all leave PIH behind as skin heals one more reason not to pick at a breakout.

• Aging: As skin ages, melanin production becomes less evenly distributed, which shows up as age spots and general unevenness.

• Certain medications: Some prescriptions increase your skin's sensitivity to sunlight or trigger pigment changes directly.

Myth vs. fact: hyperpigmentation edition

 

Myth: Once a dark spot shows up, it's permanent.

Fact: Most hyperpigmentation is treatable. Ingredients that interrupt melanin production and speed up cell turnover can visibly fade dark spots over time—it just takes consistency, since skin cell turnover can take several weeks depending on your age and skin type.

 

Myth: Only sun exposure causes dark spots.

Fact: Sun exposure is the biggest driver, but it's far from the only one. Hormones, inflammation from acne, and even normal aging can all trigger the same pigment response.

 

Myth: If you're treating dark spots, you can skip SPF.

Fact: It's the opposite. UV exposure can undo the progress of even the best hyperpigmentation treatment, and unprotected skin is more prone to forming new dark spots while it's already working to fade old ones. Daily broad-spectrum SPF isn't optional here—it's the step that protects everything else you're doing.

How to treat pigmentation

Because dark spots can stem from a handful of different causes, the most effective hyperpigmentation treatment plans combine daily sun protection with targeted, brightening actives. When you're shopping for a dark spot corrector, look for:

 

• Vitamin C: A potent antioxidant that helps interrupt melanin production while brightening skin's overall look.

• Exfoliating acids: Ingredients like glycolic acid resurface skin and fade the look of dark spots by encouraging cell turnover.

• Broad-spectrum SPF: Non-negotiable. It prevents new discoloration and protects the results of whatever treatment you're using.

 

For a targeted option, our Rapid Dark Spot Correcting Serum is clinically proven to visibly fade dark spots and even skin tone, working across multiple types of discoloration—from sunspots to acne marks—for a brighter, more even-looking complexion.

The bottom line

Hyperpigmentation is common, it's well understood, and it's treatable. The key is identifying what's driving your dark spots, sun, hormones, inflammation, or aging, and pairing daily SPF with a dedicated treatment built to target discoloration at the source. Give it time, stay consistent, and a brighter, more even complexion is well within reach.

 

The views expressed in this article do not necessarily represent the views of Murad, and are for informational purposes only, even if the advice of physicians and medical practitioners are included. This article is not a substitute for professional medical advice, diagnosis or treatment, and should not be considered specific medical advice.