Types of Hyperpigmentation: Dark Spots, Melasma, and How Sun Protection Fits

Hyperpigmentation is a catchall word. It covers several different kinds of dark spots, and they do not all start the same way. Melasma, the marks acne leaves behind, and the spots that build up from years of sun are separate problems with one thing in common: light makes every one of them worse. That is why sun protection is the single step that helps across all of them, no matter which kind you have.

One thing up front, because it matters: sunscreen does not fade dark spots. It protects. It keeps the light that drives pigment from deepening the spots you have or triggering new ones, which is what gives any fading routine room to work.

The main types of hyperpigmentation

Melasma

Patches of darker skin, usually across the cheeks, forehead, or upper lip. It is driven by a mix of hormones and light, which is why it often shows up in pregnancy and is stubborn to shift. Light, especially visible light, is the trigger you can control day to day. We go deep on this one in our guide to the best sunscreen for melasma.

Post-inflammatory hyperpigmentation (PIH)

The flat brown or gray marks left behind after acne, a cut, a bug bite, or any irritation. The spot itself has healed. The discoloration is pigment your skin laid down during inflammation. Sun exposure darkens these marks and makes them linger far longer than they need to. If breakouts are the source, see our guide to sunscreen for acne-prone skin.

Sun spots (solar lentigines)

The freckle-like brown spots that appear on the face, hands, and shoulders after years of sun. These are the most directly UV-driven of the group. They are a record of past exposure, and every unprotected day outside adds to them.

The one thing they share: light

Different starting points, same accelerant. Ultraviolet light drives all three. And for melasma and PIH especially, visible light, the everyday light you can see from the sun and screens, pushes pigment too, more so in medium to deep skin tones. Most sunscreens block UV and ignore visible light. The ingredient that covers it is iron oxides, the mineral tint in a sunscreen.

What to look for in a sunscreen for pigment-prone skin

Whatever type you are dealing with, the protective checklist is the same:

• Broad spectrum UVA and UVB
• Iron oxides, for the visible light most formulas miss
• A finish you will wear every day, with no white cast on any skin tone

Swellies covers all three: broad spectrum SPF 46 from 21% zinc oxide, iron oxides for visible light, and a sheer tint that disappears on every tone. It is not a treatment and it will not fade a spot. It is the daily protection that keeps light from making any of these worse.

How sun protection fits your routine

• Wear it every morning, indoors and out. UVA and visible light both reach you through windows.
• Reapply through the day when you are outside.
• Pair it with whatever your dermatologist or routine uses to fade spots. Protection holds the line. The treatment does the fading.

Common questions

What are the main types of hyperpigmentation?

Melasma, post-inflammatory hyperpigmentation (the marks left after acne or irritation), and sun spots from cumulative UV. They start differently, but all of them darken with light exposure.

Does sunscreen fade hyperpigmentation?

No. Sunscreen does not lighten or remove dark spots. It protects: it keeps UV and visible light from darkening existing spots or triggering new ones, which is what lets a fading routine hold its ground.

What is the difference between melasma and post-acne marks?

Melasma is driven partly by hormones and shows up as larger patches, often on the cheeks or forehead. Post-inflammatory hyperpigmentation is the flat mark left where a breakout, cut, or irritation healed. Both worsen with sun.

Does hyperpigmentation come back?

It can, especially without daily sun protection. Light re-triggers the pigment, which is why dermatologists treat sunscreen as the foundation for keeping results.

Does sunscreen help every type of hyperpigmentation?

Yes, as protection. Because light drives all of them, daily broad-spectrum and visible-light coverage is the one step that helps regardless of which type you have.

Broad spectrum and iron oxides, in five ingredients. The daily protection step for pigment-prone skin, whatever kind. Get Swellies →