Written by the ChemicalPeel.org editorial team. Published September 25, 2026.
Clinical review pending. This page has not yet been reviewed by a licensed clinician; read it as patient education, not medical advice. How we review
Melasma and hyperpigmentation are often used as if they mean the same thing, but they are not, and treating them the same way can make one of them worse. Hyperpigmentation is the broad term for any patch of skin that carries more pigment than the skin around it, and sun spots, marks left behind by a breakout, and melasma all fall under that umbrella. Melasma is a specific, hormonally driven pattern within that umbrella, and it behaves differently enough from an ordinary sun spot or acne mark that providers plan a different kind of peel for it. This guide covers how to tell the two apart and why a peel plan built for a sun spot is not automatically safe for melasma.
Hyperpigmentation Is the Umbrella Term
Hyperpigmentation simply means an area of skin is producing more melanin than the skin around it, which is why it looks darker. Almost any kind of skin darkening gets filed under this word: sun spots that build up over years of ultraviolet exposure, the flat brown or red marks a pimple leaves behind, and the larger patches associated with melasma. Our broader guide to chemical peels for dark spots and age spots covers the sun-driven and post-acne forms in more detail. Sun spots and post-acne marks usually sit close enough to the surface for a peel to reach, but melasma pigment can sit deeper in the skin as well as at the surface, which is part of why it does not respond to peels the same way.
What Makes Melasma Different
Three things set melasma apart from ordinary hyperpigmentation: what drives it, where it shows up, and how it behaves over time.
Hormones and Heat Drive It
Most hyperpigmentation traces back to a single incident: a sunburn years ago, a breakout last spring, an insect bite that got picked at. Melasma has a different engine. It is linked to hormonal activity, most often shifts in estrogen and progesterone from pregnancy, birth control, or hormone therapy, and it is also reinforced by heat and visible light, on top of ultraviolet rays. That combination is why melasma tends to appear or worsen during pregnancy, why it can flare in a hot climate or while standing over a hot stove, and why sunscreen alone does not control it the way it controls an ordinary sun spot. If you are pregnant or breastfeeding, several peel ingredients are set aside regardless of which pigment type you have, and our guide to chemical peels during pregnancy covers what changes.
The Pattern Looks Different
Sun spots and post-acne marks tend to be small, scattered, and irregular, wherever the sun or the breakout happened to land. Melasma tends to show up as larger, symmetrical patches in a handful of predictable places: the cheeks, forehead, upper lip, nose, and jawline, often mirrored on both sides of the face. A single dot of discoloration on one cheek is more likely a sun spot or a mark. A tan to brown haze spread across both cheeks and the forehead is a melasma pattern.
It Recurs, and Aggressive Peels Can Push It Further
Other hyperpigmentation, once faded, tends to stay faded as long as you keep up with sunscreen. Melasma is chronic. Patches that clear can return with a change in hormones, a hot summer, or a lapse in sun protection, sometimes years later. It is also reactive: the same controlled inflammation that helps a sun spot exfoliate away can provoke melasma pigment cells into producing more pigment instead of less. A peel strength or depth that works well on ordinary hyperpigmentation can leave melasma darker or more widespread than before treatment. That reactivity is the central reason melasma gets its own, more cautious peel plan rather than the standard approach used for sun spots or acne marks.
Melasma Versus Other Hyperpigmentation, Side by Side
Here is how the two compare across the features that matter most for planning a peel.
| Type | Cause | Typical pattern | Triggers | How it looks | Response to superficial peels | Recurrence |
|---|---|---|---|---|---|---|
| Melasma | Hormones, heat, and light | Larger, symmetrical patches on both sides of the face | Pregnancy, birth control, hormone therapy, heat, sun | Tan to brown haze across cheeks, forehead, upper lip, nose, or jawline | Improves slowly and can worsen if the peel is too strong | Common; patches often return with hormone shifts or sun |
| Sun spots and post-acne marks | Ultraviolet exposure or a past skin injury | Small, scattered, irregular spots | Sun exposure, breakouts, bug bites, other skin trauma | Flat brown, red, or gray spots in one area | Responds well and predictably to a standard series | Uncommon if sun protection is kept up |
How a Provider Tells the Two Apart
The pattern clues above are a starting point, not a diagnosis. Several things can complicate a visual read, including post-inflammatory marks that happen to land somewhat symmetrically, or ordinary hyperpigmentation layered on top of an existing melasma patch. A provider examines the color, borders, distribution, and depth of your pigment, and often uses a Wood's lamp, a handheld ultraviolet light that can help estimate how deep the pigment sits, though it is less reliable in darker skin tones, to help set realistic expectations. The call between melasma and other pigment rests mainly on the pattern and your history. That distinction changes the plan enough that it is worth getting right before any peel is scheduled. Our guide to choosing a provider covers what to ask at that first visit.
Why the Peel Plan Changes
Once you know which one you are dealing with, the plan looks different in strength, pacing, and patience.
For Sun Spots and Post-Acne Marks
Because ordinary hyperpigmentation responds predictably and does not feed on inflammation, providers can generally be more assertive. A series of superficial peels, often glycolic or salicylic acid, is standard, and our guide to chemical peels for deeper skin tones covers how strength gets adjusted for melanin-rich skin without changing that basic approach. For stubborn, long-standing spots that have plateaued after a superficial series, some providers step up to a medium-depth option such as a TCA peel, an approach that is generally avoided in melasma for the reasons above. Post-acne marks respond to the same superficial series, and our guide to peels for acne scars and marks covers that pathway specifically.
For Melasma
Melasma calls for the gentlest end of the peel menu, if a peel is used at all. Providers favor low concentrations, short contact times, and a slow build across a longer series, checking in often rather than following a fixed schedule. Many lean on strict sun and heat avoidance and pigment-suppressing topicals as the main plan, treating a peel as a supporting step rather than the main event. When a peel is used, it is typically something mild, such as a low-strength mandelic acid peel, rather than anything stronger. A medium or aggressive peel that would be routine for a sun spot is a real risk in melasma, since it can trigger the rebound pigmentation described earlier, a risk that is highest in darker skin tones.
When the Two Overlap
It is entirely possible to have melasma and ordinary hyperpigmentation on the same face at once. A patch of true melasma across the cheeks can sit alongside a scattering of sun spots on the nose or a few marks left from a breakout years ago. Treating the whole face as one condition risks undertreating the sun spots or overtreating the melasma, which is another reason a single visual pattern is not enough to plan a peel around.
When to Talk to a Provider Before Booking
Talk to a provider before scheduling any peel if any of the following apply: you are pregnant, trying to conceive, or breastfeeding; you have used isotretinoin in the past six to twelve months; you have an active skin infection or open irritation in the area; you have a personal history of keloid scarring; or you have had a laser treatment, waxing, or sunburn on the area recently. Each of these changes how your skin responds to an acid, independent of which kind of pigment you have, and a provider needs to know about them before recommending any peel strength or schedule.
What Treatment Often Costs
Pricing varies by provider, region, and how many sessions a plan calls for. Superficial peels for either melasma or ordinary hyperpigmentation are often quoted at about $100 to $400 per session, and because both conditions are usually treated as a series rather than a single visit, budget for several sessions rather than one. Melasma plans often add pigment-suppressing topicals and stricter sun protection on top of that per-session cost, and the series tends to run longer. Our cost guide breaks pricing down further by peel type. ChemicalPeel.org is an education resource, not a clinic, so confirm pricing at your consultation.
Medical Disclaimer
This page is provided by ChemicalPeel.org for patient education and is not medical advice. Individual results vary, and the information here does not replace a consultation with a qualified provider. Always discuss your medical history and treatment options with a licensed clinician before pursuing any chemical peel.
Get the Right Diagnosis Before You Book
The fastest way to waste a peel series is to treat melasma like a sun spot, or the other way around. Once you know which one you have, see our dedicated guides to chemical peels for melasma and chemical peels for hyperpigmentation for the full plan, and browse the rest of our skin concerns hub for related topics. Find a qualified provider near you who can examine your pigment directly, or browse our med spa directory to compare options in your area.
Frequently Asked Questions
How can I tell if I have melasma or another type of hyperpigmentation?
Look at the pattern first: melasma tends to form larger, symmetrical patches on the cheeks, forehead, upper lip, nose, or jawline, mirrored on both sides of the face, while sun spots and post-acne marks are usually smaller, scattered, and irregular. Pattern alone is not a diagnosis, though. A provider examines your skin directly, often with a Wood's lamp, to confirm which one you have before recommending any treatment.
Why did melasma suddenly appear on my face?
Melasma often appears or worsens after a hormonal shift, such as pregnancy, starting or changing birth control, or hormone therapy, and it can also flare after heavy sun or heat exposure or from a medication that increases sun sensitivity. A provider can help you narrow down the likely trigger, though sometimes no single cause is ever identified.
Which vitamin helps with melasma?
No vitamin treats melasma on its own. Some providers include antioxidants such as vitamin C in a topical routine alongside sunscreen and pigment-suppressing ingredients, but the foundation of any melasma plan is consistent sun and heat avoidance plus daily broad-spectrum sunscreen. Ask your provider before adding any supplement or topical, since some can interact with other treatments.
What is the best way to treat melasma?
There is no single best treatment, because melasma responds slowly and tends to recur. Most plans combine strict sun and heat avoidance, daily broad-spectrum sunscreen, pigment-suppressing topicals recommended by a provider, and sometimes a very gentle peel used cautiously over a longer series. A dermatologist or experienced provider tailors that combination to your skin and your triggers.
Can you have melasma and hyperpigmentation at the same time?
Yes. It is common to have a patch of true melasma across the cheeks or forehead alongside separate sun spots or post-acne marks elsewhere on the face. A provider needs to identify both, since treating the whole face as one condition can undertreat one type of pigment or overtreat the other.
Does a superficial chemical peel work better on melasma or on sun spots?
Superficial peels tend to work more predictably on sun spots and post-acne marks than on melasma. Melasma can improve with a very gentle, carefully paced peel, but it responds more slowly, needs a longer series, and carries a real risk of worsening if the peel is too strong or too frequent, which is why providers usually treat it more cautiously than ordinary hyperpigmentation.
