The Pigmentation Guide
Melasma or sun damage? Why the difference changes the whole treatment
Melasma and sun damage can look almost identical, but they are not the same condition. Sun damage is discrete spots from years of UV, and it can be cleared. Melasma is symmetrical patches driven by hormones as well as sun, and it can be managed but not permanently cured. The difference decides the whole treatment.
If your "sun damage" keeps coming back no matter what you try, there is a good chance it was never sun damage in the first place. That one detail, marks that fade with treatment and then return, is the single most useful clue that you might be looking at melasma instead.
The two conditions are easy to mix up. Both are brown, both live on the face, and both get worse in summer, so even careful people put melasma in the "sun spots" box and treat it that way. The problem is that the right approach for one is the wrong approach for the other, and getting it backwards is how people end up frustrated and out of pocket.
This guide is the fast way to tell them apart, and to understand why the difference changes everything that happens next.
They look alike. They aren't the same thing.
At a glance, melasma and sun damage can be hard to separate. They share a colour, a location, and a season. Look a little closer and they pull apart in three places: the pattern, the trigger, and the history.
Sun damage is the pigmentation you have accumulated. Years of Australian sun have changed the pigment-producing cells in particular spots so that they now hold colour. You see it as discrete, defined spots, often larger than freckles, scattered where the sun has reached most: the cheekbones, the forehead, the décolletage, the backs of the hands. The spots are individual. You could point to each one. In Australia they tend to show up from the thirties onward because of how much UV this climate delivers.
Melasma is the pigmentation driven from the inside as well as the outside. It shows up as larger, soft-edged, symmetrical patches rather than discrete spots, most often spread across both cheeks in a mirror image, with the forehead and the upper lip commonly involved. People describe it as a "shadow across my cheeks," a "pregnancy mask," or "hormonal pigmentation." It is set off and worsened by a combination of hormones, UV, heat, and visible light, which is why pregnancy, the contraceptive pill, and hormone therapy so often bring it on or deepen it.
That hormonal element is the part that changes everything. Sun damage is a UV story. Melasma is a UV story tangled up with a hormonal one, and that is why the same laser settings that clear a sun spot can make melasma flare.
The fastest way to tell them apart
You can get a long way on your own before anyone examines your skin properly. Three questions sort most cases.
Is the pattern symmetrical, or are they separate spots? Sun damage tends to be discrete spots you could count. Melasma tends to be a soft, symmetrical wash across matching areas, the same on the left as on the right.
Does it keep coming back? This is the giveaway. Sun damage, once it is cleared, does not return in the same spot. Melasma comes back, because it is not really about a single dose of sun. "Sun damage that just keeps coming back" is, more often than not, melasma that was treated as though it were sun damage.
Did it arrive with a hormonal change? Melasma very often shows up or deepens during pregnancy, on the pill, or with hormone therapy. Sun damage has no such trigger. It simply accumulates with exposure over time.
The table below lays the two side by side.
| What to look at | Sun damage | Melasma |
|---|---|---|
| Pattern | Discrete, defined spots you could count | Soft, symmetrical patches, mirrored left and right |
| What drives it | Cumulative UV exposure over years | Hormones plus UV, heat and visible light |
| Typical trigger | Sun exposure, building up over time | Often pregnancy, the pill or hormone therapy |
| Does it come back? | No, not in the same spot once cleared | Yes, it is a chronic condition that returns |
| Where you see it | Cheekbones, forehead, décolletage, backs of hands | Both cheeks, forehead, upper lip, symmetrical |
| The honest outlook | Can be cleared with the right laser | Can be managed but not permanently cured |
None of this replaces a proper assessment, and the two can overlap, but if the marks are symmetrical, arrived with a hormonal change, and keep returning, melasma is the likelier answer, and that changes what you do next.
Why the difference changes the treatment
This is where naming it correctly stops being academic. Sun damage and melasma do not just look different. They need different treatments, and the gap between them is the whole point of this article.
Sun damage can be cleared. The pigment is concentrated in defined spots, and a Q-Switched laser can target that pigment selectively. Pink treats sun damage with the Fotona StarWalker MaQX, Q-Switched, using 532nm for pigment near the surface and 1064nm for anything deeper, with the SP Dynamis Pro added for heavier photodamage. Most patients need three to four sessions, published as up to six to keep expectations honest, and once a spot is cleared it stays cleared. New spots can still form with future sun, which is why daily SPF holds the result, but the marks you treat are treated.
Melasma is managed, not cured. This is the line that matters, and it is worth stating plainly. Melasma is a chronic condition. It can be managed but not permanently cured. It can be reduced, kept quiet, and the appearance of it improved, but it asks for ongoing care rather than a one-off clearance. Pink manages melasma with the Fotona StarWalker MaQX, 1064nm Nd:YAG at low fluence, as part of the Signature Melasma Protocol, usually around six sessions and then maintenance, paired with sun protection and trigger control. The aim is to settle the pigment and keep it settled, not to switch it off for good.
That difference in language is not marketing caution. It reflects what the conditions actually are. Promising to "clear" melasma the way you clear sun damage sets up the exact disappointment that sends people from clinic to clinic, because the patches always come back and the patient is left feeling the treatment failed when the expectation was wrong from the start.
If the symmetrical-patches-that-keep-returning description sounds like you, the melasma treatment page is where to go next, and it goes deeper on how the approach is calibrated.
What gets each one wrong
Most of the harm in this category comes from treating melasma as though it were sun damage.
Sun damage is forgiving. It responds to a fairly direct, targeted approach, and an aggressive setting on a discrete spot tends to clear it. Melasma is the opposite of forgiving. Heat and aggressive, one-pass energy are among its triggers, so the very thing that clears a sun spot can drive melasma to flare and darken. People who have had a bad result from laser on their melasma have usually had it treated with settings meant for a different condition.
This is why the device and the calibration matter so much for melasma, and why the honest answer to "will laser fix it" is different for each condition. The 1064nm Nd:YAG low-fluence approach is gentle and selective, which is what allows it to settle melasma pigment without the heat spike that sets it off. The same low-fluence 1064nm approach is also why this is suitable for darker skin tones, Fitzpatrick IV to VI, where melasma is most common and where the wrong laser does the most damage. If you have been told your skin is too complicated or too dark for laser, that usually points to the wrong device rather than your skin.
None of this is about one tool being better than another in the abstract. It is about matching the approach to the condition. Sun damage and melasma are different problems, and the skill is in reading which one is in front of you and calibrating accordingly.
What to do next
You do not have to land on a final diagnosis by yourself. Naming the likely condition is enough to choose the right next step, and a proper assessment confirms it.
If your marks are discrete spots that have built up with sun over the years and do not come back once treated, you are most likely looking at sun damage, and the sun damage treatment page covers how that is cleared.
If your marks are symmetrical patches that arrived with a hormonal change and keep returning, melasma is the likelier answer, and the honest framing is the point: it can be kept quiet, not switched off. A consultation settles which condition it is and maps the approach from there. See how Pink approaches melasma for the fuller picture before you decide anything.
Frequently Asked Questions
What's the quickest difference between melasma and sun damage?
The quickest difference is the pattern and whether it returns. Sun damage shows up as discrete, defined spots that stay cleared once treated, while melasma appears as soft, symmetrical patches that keep coming back because it is a chronic condition. If your marks are mirrored across both cheeks and arrived with a hormonal change like pregnancy or the pill, melasma is the likelier answer.
Can I have both melasma and sun damage at once?
Yes, this is common, especially in Australia where UV exposure is high. Many people have years of accumulated sun damage as well as melasma, and the two can sit on the same face at the same time. When both are present, the assessment sorts out which is which and sequences the approach so that the gentler management melasma needs is not undone by treating sun damage too aggressively.
Why does my "sun damage" keep coming back?
If pigmentation keeps returning after it has been treated, it is very often melasma rather than sun damage. Sun damage, once cleared, does not come back in the same spot. Melasma does, because it is driven by hormones and visible light as well as UV, so it is never fully resolved by a single course. Marks that keep returning are the classic sign that the condition was misread as sun damage.
Will laser fix melasma and sun damage the same way?
No, and this is the main reason telling them apart matters. Sun damage is cleared with a Q-Switched laser that targets the pigment in discrete spots. Melasma is managed with a gentler low-fluence 1064nm Nd:YAG approach, because aggressive settings can make it flare and darken. The right treatment depends entirely on which condition you have.
Can laser make melasma worse?
It can, if the wrong device or settings are used. Heat and aggressive, one-pass energy are triggers for melasma, so a laser calibrated for sun damage can drive melasma to flare. This is why Pink uses a 1064nm Nd:YAG low-fluence approach as part of the Signature Melasma Protocol, which settles the pigment without the heat spike that sets melasma off, and why it is also suitable for darker skin tones.
Is one of them more serious than the other?
Neither is dangerous in itself, but melasma is the more complex condition to live with and to treat. It is chronic, it carries a real emotional load for many people, and it needs ongoing care rather than a one-off fix. Sun damage is more straightforward to clear. That said, any spot that is new, changing, growing, asymmetric, bleeding, or itchy should be checked by a GP before any cosmetic treatment, whichever condition you think you have.
Does either melasma or sun damage go away on its own?
Generally no. Sun damage does not fade on its own once the pigment cells have changed, and it usually needs treatment to clear. Melasma can ease when a trigger fades, for example when pregnancy hormones settle, but it commonly persists or returns and is best managed actively. Neither tends to simply disappear without some combination of treatment and sun protection.
How do you confirm which one I have?
A clinician examines your skin in person, looking at the pattern, the borders, the location, and the depth of the pigment, and takes a history that includes any hormonal triggers and how the marks have behaved over time. That combination usually makes it clear which condition it is, and confirms whether more than one is present, before any treatment is recommended.
See how Pink approaches melasma
You do not need a diagnosis to take the next step. If the symmetrical, keeps-coming-back picture sounds like yours, see how Pink approaches melasma, where the honest framing and the calibrated approach are set out in full. If your marks are discrete spots that built up with sun, see how Pink clears sun damage instead.
For the wider orientation across all four kinds of facial pigmentation, see which kind of pigmentation is mine, and for the sun-damage clearing mechanism in depth, see how laser clears sun damage.
