Melasma in Latinas: Why Paño Happens and What Actually Fades It

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If your tía called it paño and your doctor called it melasma, you're both right, and neither name comes with a cream that makes it disappear forever. Melasma in Latinas is common because many Latinas have medium-brown skin that makes pigment easily, and that pigment overreacts to UV, visible light and hormones. You can keep it faded with the right routine, but nothing cures it. Anyone selling you a jar that promises otherwise deserves your suspicion.

As a licensed esthetician, I spent years at GLOWDEGA working on hyperpigmentation across every shade of brown skin. This post covers what melasma is, why it relapses, and which treatments have real evidence behind them.

What is melasma, and what does it look like?

Melasma is a long-lasting pigment condition that causes flat brown or gray-brown patches, usually on both sides of the face. The patches don't itch or hurt. They tend to have blurry, irregular edges and show up on the cheeks, forehead, nose, upper lip or jawline, and they darken after time in the sun.

According to the AAD's guide to melasma symptoms, it usually appears on the cheeks, chin, forehead, nose or above the upper lip, in a matching pattern on each side. Some people also get it on the jawline, neck or arms.

What separates melasma from a dark mark left by a pimple is the symmetry. Post-inflammatory hyperpigmentation sits wherever the breakout was. Melasma usually mirrors itself, a matching shape on each cheek or a shadow across the upper lip that people mistake for a mustache. Plenty of us have both at once, which is why I wrote a whole hyperpigmentation handbook on the different kinds of manchas.

Why is melasma so common in Latina women?

The American Academy of Dermatology lists Latin heritage as a risk factor, alongside Asian, Black and Native American heritage. Melasma is much more common in women than men, usually starting between 20 and 40, and it shows up more often in medium and dark skin tones than in light ones.

The risk follows skin type more than ethnicity, and "Latina" covers a huge range of skin, from very fair to very deep, so your ethnicity tells me nothing about your face on its own. The AAD also notes that medium and dark skin tones get melasma more than light ones do, and a lot of Latinas fall in that range.

Family history matters too. In an AAD-cited study of 324 people with melasma, 48% had a blood relative with it, and the AAD says other studies found similar numbers. If your mom and your abuela both had paño, take sunscreen seriously before you ever see a patch.

What triggers melasma: pregnancy, birth control or the sun?

Usually a combination. Hormones often start it and light keeps it going. Melasma frequently begins during pregnancy (hence "the mask of pregnancy"), when estrogen and progesterone rise, and birth control can trigger it in some people. Sun exposure then darkens existing patches and can create new ones.

Here's how the main triggers break down, according to the AAD:

Heat gets blamed a lot, especially by people who cook over a stove all day or live somewhere hot. The research on heat is much thinner than the research on light, so I treat it as a possible aggravator, not a proven cause. If you're wondering whether your pill is behind your skin changes, I wrote about birth control and your skin, and that conversation belongs with your doctor, not TikTok.

Why does melasma keep coming back?

Melasma comes back because the pigment cells that make it stay sensitive even after the patches fade. A single summer weekend at the beach, months of skipped sunscreen or a new hormone can switch them back on. Fading melasma treats the visible pigment; it doesn't change how your skin responds to its triggers.

The AAD says melasma can last for years or even a lifetime, and that daily sun protection is what helps fade it and keep it from coming back. In its treatment guide, peels, microneedling and lasers are add-ons for stubborn cases, done by a board-certified dermatologist on top of medication and sunscreen, so be wary of any spa that offers to "zap" it in a session or two.

Treatments that work can lose ground once you stop. In a 2018 JAAD trial of oral tranexamic acid, the improvement shrank a lot in the three months after the pills ended, even though everyone kept wearing sunscreen. Plan on a maintenance routine for as long as you want the results.

How do you treat melasma on Latina skin safely?

Start with daily broad-spectrum sunscreen, ideally a tinted one with iron oxides, because it blocks visible light too. Then a dermatologist can add a fading ingredient, usually azelaic acid, tranexamic acid, a retinoid or prescription hydroquinone, often in combination. Expect months, not weeks, and expect to keep a maintenance routine.

Step one: sunscreen that handles visible light

Everything else fails without this. The AAD's self-care advice is a broad-spectrum, water-resistant SPF 30 or higher, a tinted formula with iron oxide, and a wide-brimmed hat. Iron oxides are the pigments that give tinted sunscreens their color, and they help block visible light that clear UV filters let through. Bonus for brown skin: tint means no ashy white cast. Reapplication matters as much as the morning layer, and my post on why hyperpigmentation won't clear without sunscreen covers how to actually do that.

Ingredients that have evidence behind them

• Azelaic acid. The AAD lists it among the gentler prescription options. It's usually easier on skin than the prescription heavy hitters, which makes it a sensible first conversation with your dermatologist.
• Tranexamic acid. Available as a topical serum and, by prescription, as a pill. In that 2018 JAAD trial, 44 patients, predominantly Hispanic women, took 250 mg twice a day or a placebo for three months. Melasma scores dropped 49% with the pill versus 18% with placebo. Oral tranexamic acid is a medicine that helps blood clot, so your doctor needs your full history, especially any blood clots.
• Retinoids. Tretinoin speeds up skin turnover and is part of the classic "triple combination" cream with hydroquinone and a moderate-strength steroid. Retinoids are irritating at first, and irritated brown skin darkens, so start slow.
• Hydroquinone. Effective, and prescription-only in the US since over-the-counter versions were pulled in 2020. Use it only under a dermatologist's supervision, for a set period, because long unsupervised use can cause exogenous ochronosis, a permanent blue-black discoloration.

If you're pregnant, trying to get pregnant or breastfeeding, check every one of these with your OB or dermatologist first. Some are off the table during pregnancy.

Are imported "cremas" for paño safe?

Many are not. The FDA states there are no FDA-approved or legally marketed over-the-counter skin lightening products in the US, and its lab testing has found creams with high levels of mercury sold through big online marketplaces like Amazon, eBay, Etsy and Walmart.com. Mercury can be absorbed through the skin and damage the kidneys and nervous system.

This is where I get protective. Unlabeled lightening creams get handed from one relative to the next as the fix for manchas, and social media sellers are happy to ship them. When a cream lightens skin suspiciously fast and the label is vague, assume it contains something you'd never knowingly put on your face.

The worst case I've read is in a 2019 CDC report. A 47-year-old Mexican-American woman in Sacramento had used a skin lightening cream from Mexico on her face twice a day for about seven years. It contained 12,000 parts per million of mercury, in a form more toxic than usual. She ended up unable to speak or care for herself.

Mercury doesn't stay with the person using it, either. The FDA warns that family members can breathe mercury vapors or pick it up from washcloths and towels, and that pregnant women, nursing babies and young children are especially vulnerable. Some creams also hide a strong prescription steroid: a 2016 study in Environmental Research that tested lightening creams bought in West Africa and Canada found clobetasol propionate above US FDA standards in some of them.

Check the label for these names, and throw the product out if you see one:

• Mercurio, mercury, mercuric, mercurous chloride or calomel
• Clobetasol propionate
• Hydroquinone sold without a prescription

A cream with no ingredient list, or one written only in a language you can't read should be trashed too.

When should you see a dermatologist for melasma?

See a board-certified dermatologist before you start hydroquinone, oral tranexamic acid or any procedure, and whenever you're not sure the patches are melasma. A dermatologist can confirm the diagnosis, rule out other pigment conditions and build a plan around your skin tone. Go sooner if:

• A patch is raised, changing shape, bleeding or only on one side
• You've used an imported lightening cream and have numbness, tremors, headaches or mood changes
• Your skin went darker, blue-gray or thinner after using a lightening product
• Melasma showed up after a new medication or alongside thyroid symptoms

FAQ

Does melasma go away after pregnancy?

Sometimes. Melasma that started during pregnancy may fade on its own in the months after delivery, but for many people it stays or returns with sun exposure. Daily sunscreen gives it the best chance to fade.

Is tinted sunscreen better for melasma than regular sunscreen?

For most people with melasma, yes. Tinted sunscreens get their color from iron oxides, which help block visible light that regular sunscreen filters miss, and the AAD recommends a tinted sunscreen with iron oxide for melasma.

Can I use tranexamic acid serum without a prescription?

Tranexamic acid serums are sold over the counter, and the AAD notes tranexamic acid can be applied to the skin or taken as a pill for melasma that hasn't responded to other treatment. The pill is a prescription medication, and the AAD says to tell your dermatologist if you've ever had a blood clot.

Is melasma the same as sun spots?

No. Sun spots (solar lentigines) are small, well-defined spots from years of UV damage. Melasma forms larger, blurry, symmetrical patches driven by hormones and light, and it relapses much more easily.

Melasma is one of the topics I go deep on in my book, Under Your Skin.

Sources

• Melasma: Who gets and causes, American Academy of Dermatology
• Randomized, placebo-controlled, double-blind study of oral tranexamic acid in the treatment of moderate-to-severe melasma, Journal of the American Academy of Dermatology, 2018
• FDA Warns Consumers of Skin Products Containing Mercury and/or Hydroquinone, US Food and Drug Administration, 2026
• Notes from the Field: Methylmercury Toxicity from a Skin Lightening Cream Obtained from Mexico — California, 2019, CDC Morbidity and Mortality Weekly Report (via PubMed Central), 2019
• Mercury Poisoning Linked to Skin Products, US Food and Drug Administration
• Mercury, hydroquinone and clobetasol propionate in skin lightening products in West Africa and Canada, Gbetoh MH, Amyot M, Environmental Research, 2016