TL;DR: Hormonal, photosensitive, and famously hard to shift. 2026 has the best toolkit we've ever had. SPF is still half the battle.
Quick answer
Melasma is a chronic, often hormonally-driven hyperpigmentation that lands in symmetric patches on the cheeks, forehead, upper lip, and jawline. The triggers stack: UV, hormones (pregnancy, contraception, thyroid), heat, visible light. You can’t treat it with one product. You need rigorous broad-spectrum SPF (ideally with iron oxides so visible light is included), tyrosinase inhibitors, melanin-transfer blockers, and often oral therapy on top. The 2026 standard is tranexamic acid (topical or oral) plus modern brighteners plus tinted or visible-light-blocking SPF.
How melasma differs from other pigmentation
It’s symmetric: both cheeks, both sides of the forehead, both sides of the upper lip. If it’s only on one side, it’s probably a sun spot or post-inflammatory mark, not melasma.
It’s hormonally responsive. It often shows up or gets worse during pregnancy (the old “mask of pregnancy” name), after starting hormonal birth control, or alongside thyroid imbalance.
It reacts to more than UV. Visible light, especially blue light, and infrared also feed melasma, which is why a standard mineral SPF that only covers UV isn’t enough.
It’s chronic. Realistic goals are significant fading and ongoing management, not a permanent cure.
And it reacts to heat. Hot climates, saunas, even cooking over a stove can flare it without direct sun.
What’s happening under the skin
Melasma is overactive melanocytes responding hard to their triggers. The pigment can sit in the epidermis (superficial, easier to treat), in the dermis (deeper, harder), or in both at once. Mixed-type is the most common variant.
The hormonal piece is real but not fully understood. Estrogen and progesterone receptors on melanocytes seem to be part of it. Thyroid dysfunction has a documented link too, which is why a thyroid panel is sometimes worth running.
The 2026 treatment hierarchy
The foundation, non-negotiable: daily broad-spectrum SPF 30+, reapplied every two hours when you’re outside. A tinted or iron-oxide-containing SPF for visible-light protection (standard mineral SPF misses this). Hats, sunglasses, shade. And, where possible, addressing hormonal triggers — combined oral contraceptives can worsen melasma in susceptible people.
On top of that, topical actives: tranexamic acid 2–5% (now central to most modern protocols, interrupts the melanin signaling pathway), vitamin C 10–20% (tyrosinase inhibitor, pairs well with tranexamic acid), niacinamide 5–10% (blocks melanin transfer), azelaic acid 10–20% (tyrosinase inhibitor plus anti-inflammatory), retinoids (tretinoin most studied, accelerates turnover), and hydroquinone 2–4% (the strongest topical brightener, prescription in most regions, used in cycles to avoid ochronosis).
Oral therapy has expanded fast. Oral tranexamic acid (250–500 mg twice daily for three to six months) has strong evidence behind it and requires medical supervision plus screening for clotting risk. Oral antioxidants like Polypodium leucotomos extract and glutathione have modest evidence as adjuncts.
Procedures: superficial chemical peels are useful; deep peels can backfire badly. Microneedling with tranexamic acid serum is increasingly popular and has moderate evidence. Cosmelan and Dermamelan are mask-style depigmenting protocols. Q-switched and pico lasers can help in careful hands and can make melasma dramatically worse in the wrong ones.
What’s actually new
Tranexamic acid moved from niche to first-line, both topical and oral, in many dermatology protocols.
Visible-light protection finally got recognized. The old “any SPF will do” advice has been replaced by SPF plus iron oxides for melasma patients specifically.
Microneedling-assisted delivery of tranexamic acid and other brighteners is now well-validated.
And combination protocols decisively beat single-agent treatment. The strongest results stack ingredient classes rather than going hard on one.
What to actually expect
Visible improvement at twelve to sixteen weeks of consistent treatment. Significant fading by six months. Maintenance is permanent: when patients stop, melasma comes back within months. Full resolution is rare. The honest goal is 70–90% improvement, maintained with ongoing care.
Melasma is a marathon. The people who do best are the ones who stay on a maintenance routine even after their skin clears.
Where people go wrong
Skipping SPF on cloudy days, indoors, or in winter. UV and visible light both reach skin year-round. Daily SPF is the single most important variable here, and the one most consistently underdone.
Using harsh acids to “burn it off.” Inflammation triggers more pigmentation, especially in deeper skin tones. Gentle plays better over time.
Stopping treatment when the skin clears. It comes back.
Using triple-combination cream (hydroquinone, tretinoin, corticosteroid) on an open-ended basis. It’s effective but it’s meant to be cycled. Long-term continuous use risks ochronosis (a paradoxical darkening) and steroid side effects.
Ignoring possible thyroid involvement when melasma appears without obvious UV or hormonal triggers. Worth a panel.
When to see a dermatologist
For melasma, always. OTC alone usually underperforms. A derm can confirm the diagnosis (it gets confused with other pigmentation more often than you’d think), prescribe the stronger topicals, run oral tranexamic acid safely, recommend the right procedures, and check for hormonal or thyroid contributors.
FAQ
Is melasma curable? Not currently. Manageable, often dramatically improvable, but it tends to recur without ongoing care.
Will pregnancy-related melasma go away on its own? Often, partly. Postpartum melasma frequently fades but rarely resolves fully without treatment.
Can I get tranexamic acid OTC? Topical tranexamic acid is widely available OTC. Oral tranexamic acid for melasma is prescription-only and requires clotting-risk screening.
Will laser fix melasma? Sometimes. Often it makes it worse. Cool, pigment-targeted lasers used cautiously by experienced practitioners can help. Aggressive resurfacing lasers tend to flare melasma.
Why is it worse in summer? UV, visible light, and heat all intensify melanocyte activity at once. Most people see seasonal flares despite a good routine. That’s the disease, not the routine failing.
Sources
Sarkar R et al. Melasma update. Indian Journal of Dermatology, Venereology and Leprology, 2021. Bala HR et al. Oral tranexamic acid for the treatment of melasma. Dermatologic Surgery, 2018.
Keep reading
Keep reading
- HyperpigmentationSun spots and age spots: treatment timelines that actually work
- Best for ConcernMelasma: a routine that actually moves it
- Acne Scars (PIE & PIH)PIE vs PIH: the two kinds of acne marks, and the very different ways to treat them