Melasma Got Darker After Laser? Why It Happens & What Works

This is an English adaptation of a clinical article Dr. SangYoul Yun — board-certified dermatologist and Medical Director of Delight Dermatology in Gangnam, Seoul — originally published in Korean. Read the Korean original on Naver. It has been restructured and translated for international readers; all references are the author's own.

One of the most disheartening moments in clinic goes like this: "Doctor, I had melasma laser several times somewhere else — but it actually got darker and spread wider." I hear this often. Melasma is one of the most stubborn and most frequently recurring conditions in dermatology, yet many people assume that "melasma = burn it off with a laser." That very approach is one of the most common reasons melasma gets worse. Here is what the evidence actually says.

Melasma is not just a "clump of pigment"

Most people picture melasma as melanin piled up in the epidermis. Current research instead classifies it as a photoaging skin disease. When you look at melasma skin under biopsy, you find far more than surface pigment:

• Basement-membrane damage — the border between epidermis and dermis breaks down
• Increased dermal blood vessels — a vascular component that adds redness
• Chronic inflammation — an increase in mast cells
• Photoaging — UV-driven degeneration of elastic fibers

In one study, patients with darker skin (Fitzpatrick types IV–V) showed basement-membrane damage in up to 95.5% of cases.¹ In other words, melasma is not an "epidermal pigment problem" — it is a complex condition that also involves the dermis, blood vessels and inflammation.

Why "strong lasers" are dangerous

Here is the crux. If the basement membrane is already weakened and you apply a strong laser — high-fluence toning, aggressive IPL — what happens?

1. Melanin drops through the weakened basement membrane down into the dermis (pigment dropout).
2. Pigment that has fallen into the dermis is far harder to clear than epidermal pigment.
3. The laser itself provokes inflammation, which stimulates melanocytes further.
4. The result is post-inflammatory hyperpigmentation (PIH) and recurrence or worsening.

This is exactly the "it got darker the more laser I had" phenomenon. Multiple studies consistently report that melasma frequently recurs even after successful treatment.² The point to remember: the goal of melasma treatment is not to "burn it off" but to calm the melanocytes and keep irritation to a minimum.

What actually works — a multimodal approach

Recent research keeps pointing to one answer: not a single procedure, but a multimodal combination. This is also the foundation of how we treat melasma.

① Tranexamic acid (TXA) — the treatment drawing the most attention

Tranexamic acid was originally a hemostatic drug. As its anti-melanin, anti-inflammatory and vascular-stabilizing effects became clear, it emerged as a core melasma treatment.⁵ It works by inhibiting UV-induced plasmin activity, blocking melanin-production signals, and suppressing VEGF to reduce new vessel formation (which improves redness). In one study, adding oral tranexamic acid to a low-fluence laser produced a significantly greater improvement in melasma severity (mMASI) than laser alone.³ In short, even when a laser is used, pairing it with medication improves both efficacy and safety.

② Laser toning — not "strong," but "gentle and frequent"

This does not mean lasers are useless. Low-fluence 1064 nm laser toning breaks pigment down gradually without stimulating the melanocytes, which is why it is still one of the most widely used approaches. The principle is to lower the fluence and combine it with medication.⁴

Our low-irritation melasma lasers

As noted above, what matters in melasma is not "strength" but "matched to the skin, with minimal irritation." On that principle we keep three low-irritation lasers and choose among them by skin type and pigment pattern.

• Hollywood Spectra — the 1064/532 nm laser that was among the first FDA-cleared for melasma worldwide. Its defining feature is a photoacoustic (nano-acoustic) effect rather than heat, breaking pigment into fine particles. Because thermal damage is low, it can reduce pigment without the risk of aggravating melasma, with almost no downtime.
• Pico laser — delivers energy in picoseconds (trillionths of a second) to physically shatter pigment. It transfers far less heat to surrounding tissue than older lasers, so the risk of PIH is lower and results can be reached in fewer sessions.
• Laser Genesis — gently heats the dermis to improve redness, fine vessels and skin texture together. Because melasma often carries a vascular component, Genesis is a useful adjunct for redness-associated melasma or sensitive skin, with little irritation.

All three have trade-offs, so the right choice is decided after skin diagnosis — whether the melasma is epidermal, dermal or mixed, and whether a vascular component is present. Some cases use one device alone; others combine them.

③ Nonablative fractional laser + topical TXA

One split-face study found this combination outperformed monotherapy — though both sides showed recurrence on follow-up, underscoring that consistent maintenance matters (2024, J Cosmet Dermatol).

④ Microneedling + topical medication

Using fine needles to improve drug absorption has also been reported to help when combined with topical tranexamic acid.

The most important step — and the most overlooked

Whatever procedure you choose, none of it means much without sun protection. Every mechanism of melasma — melanocyte activation, basement-membrane damage, increased vessels, inflammation — shares one trigger: ultraviolet light. Crucially, melasma responds not only to UV but also to visible light, especially blue light. So for melasma patients I recommend:

• SPF 50+ / PA++++, reapplied every 2–3 hours
• Mineral sunscreen (zinc oxide / titanium dioxide) or a tinted sunscreen (iron oxides block visible light)
• Physical barriers such as a hat or parasol

How we approach melasma at Delight Dermatology

We treat melasma as a condition to manage, not "erase":

• Accurate diagnosis first — MetaView 3D imaging to distinguish epidermal, dermal and mixed types
• Minimal irritation — medication and low-fluence options before strong lasers
• Multimodal — tranexamic acid (oral / topical) + low-irritation procedures + strict photoprotection
• Long-term maintenance — a plan built on the assumption that melasma recurs

Even for the same "melasma," treatment changes completely depending on whether it is epidermal, dermal or has a vascular component — which is why starting with a laser before an accurate diagnosis is genuinely risky.

Bottom line: melasma is not a "burn it off" disease but a "calm it and manage it" disease. The harder you push a strong laser to clear it quickly, the more the basement membrane is damaged and pigment drops into the dermis — making it worse. The answer research consistently offers is a combination: medication (especially tranexamic acid) + low-irritation procedures + strict sun protection. Set aside the urgency, get an accurate diagnosis, and manage it steadily — that is the fastest way to win against melasma.

References

1. Kwon SH et al. Heterogeneous Pathology of Melasma. Int J Mol Sci. 2016;17(6):824.
2. Passeron T, Picardo M. Melasma, a photoaging disorder. Pigment Cell Melanoma Res. 2018;31(4):461-465.
3. Cho HH et al. Role of oral tranexamic acid in melasma. J Dermatolog Treat. 2013;24(4):292-296.
4. Wattanakrai P et al. Low-fluence QS Nd:YAG laser for melasma in Asians. Dermatol Surg. 2010;36(1):76-87.
5. Zhang L et al. Tranexamic Acid for Adults with Melasma. Biomed Res Int. 2018;2018:1683414.

Medical disclaimer. This article is general information and does not replace individual consultation. The right melasma protocol depends on your pigment type and skin, and is decided after an in-person dermatology assessment. Tranexamic acid has contraindications (for example, a history of thrombotic disease), so oral use must be decided only after consulting a dermatologist.