Dark patches on Nepali skin: what the evidence actually supports

Almost every consultation at our counter that starts with dark spots turns into the same conversation. The customer has bought four brightening products over two years. Some of them worked a little. None of them held. And nobody has ever asked them which kind of pigmentation they have.

That is the part that matters, because three quite different problems get sold the same products.

First, work out which one you have

Post-inflammatory hyperpigmentation is by far the most common in Nepal, and the most misread. It is not a scar. A scar is a change in skin texture, raised or indented. Post-inflammatory marks are flat and are pure pigment, which means they will fade, though slowly, and they fade much faster when they are kept out of the sun.

Melasma is the hardest of the three. It is a chronic, relapsing condition, most frequently seen in Fitzpatrick phototypes III to V, which covers most South Asian skin. It responds to treatment and then returns when treatment stops or after a sunny holiday. Managing expectations about that is part of treating it honestly.

Why brown skin pigments more readily

More active melanocytes means the skin's response to any insult, ultraviolet light, a spot, a scratch, a chemical burn from a product that was too strong, includes producing pigment. That is a protective mechanism doing its job. It is also why an approach that works on pale skin can backfire here.

The practical consequence: anything that irritates deeper skin can create the very pigmentation it was bought to remove. Aggressive peels, high-strength acids on an unprepared barrier, and picking at spots all cause more marks than they clear. Gentleness is not a soft option on brown skin, it is the correct clinical approach.

Sun protection is not step one, it is the whole foundation

Ultraviolet exposure appears to be the most significant driver of melasma, and photoprotection is the base of any treatment plan. That is not a sunscreen advertisement, it is the consistent finding in the literature.

In Nepal this is harder than it sounds and more important than elsewhere. The Valley sits at about 1,400 metres with a midday UV index commonly between 8 and 11, and unlike temperate countries the load stays high through winter because the skies are clear and the air thin.

• Broad-spectrum sunscreen with a meaningful UVA rating, applied generously, reapplied when outdoors.
• Tinted sunscreens deserve a specific mention for melasma, because visible light contributes too and iron oxides in tinted formulas provide some protection against it.
• Physical shade matters. A wide-brimmed hat and staying out of the midday sun does more than any serum.
• Heat is an independent trigger for melasma. Cooking over a hot stove, sitting close to a heater, and long spells in direct sun all count.

The actives that have evidence behind them

Niacinamide

Niacinamide reduces the transfer of melanin from melanocytes into skin cells and has anti-inflammatory properties, which matters because inflammation is what starts the pigment cascade in the first place.

A split-face trial of 4 percent niacinamide against 4 percent hydroquinone found good to excellent results in 44 percent of the niacinamide sides against 55 percent for hydroquinone. More relevant for reactive skin, side effects occurred in 18 percent with niacinamide against 29 percent with hydroquinone. That trade, slightly less power for meaningfully fewer adverse effects, is usually the right trade on brown skin.

Azelaic acid

This is the one that deserves more attention than it gets in Nepal. Azelaic acid is a tyrosinase inhibitor that is selectively toxic to abnormal melanocytes, which means it targets the overactive cells rather than suppressing pigment production everywhere.

Topical 20 percent azelaic acid has been shown superior to 2 percent hydroquinone and as effective as 4 percent, without hydroquinone's side effect profile. A 2023 meta-analysis of six randomised controlled trials covering 673 patients suggested azelaic acid may outperform hydroquinone on melasma severity scores. Because it does not carry ochronosis risk, it can be used for longer stretches. Its main limitation is that it works best on epidermal pigment and responds more slowly on deeper dermal pigment.

Vitamin C, kojic acid, tranexamic acid

Vitamin C and kojic acid offer meaningful pigment reduction with a good safety profile and are well suited to maintenance. Tranexamic acid has emerged as one of the more promising alternatives, with efficacy comparable to hydroquinone and significantly fewer adverse effects, and it appears in combination serums alongside niacinamide and vitamin C.

Retinoids

Retinoids speed cell turnover, which moves pigmented cells toward the surface faster, and they enhance the effect of other actives. Adding tretinoin to azelaic acid produces more lightening at three months than azelaic acid alone. On deeper skin they need careful introduction, because retinoid irritation itself causes post-inflammatory pigmentation. Start twice a week, buffer with moisturiser, build slowly.

Hydroquinone, and why it needs a doctor

Hydroquinone is still the fastest-acting topical option and remains the benchmark in the literature. It blocks an early step in melanin production and is typically used at 2 to 5 percent at night for at least three months.

The reasons it belongs under supervision are specific rather than vague. Its effects may be reversible when stopped. It can cause irritation, redness, contact dermatitis and patchy loss of pigment, and on deeper skin prolonged uninterrupted use carries a risk of exogenous ochronosis, a blue-grey discolouration that is difficult to reverse. Because irritation on brown skin itself produces pigmentation, a hydroquinone course that is too strong can leave you worse off.

Standard practice is cycled, time-limited courses under a dermatologist, then maintenance with gentler agents. That is a very different thing from a cream bought over a counter with no supervision and used indefinitely.

The creams to stay away from

There is a large unregulated market across South Asia in fast-acting skin-lightening creams, and its contents are documented and grim. Undisclosed corticosteroids, undeclared hydroquinone at unknown concentrations, and in the worst cases mercury.

The pattern is recognisable. Skin looks lighter within two weeks, which no legitimate product achieves. Then it becomes thin, reactive and flushed. Stopping produces a rebound worse than the starting point. Steroid-induced facial damage is a genuine and common presentation in dermatology clinics in this region.

GLAMO Nepal does not sell products on a promise of lightening skin. We sell products that treat pigmentation as a dermatological condition, which is a different thing, and we will say so at the counter.

There is no product that will change your skin tone. There are products that will even it out, and that is a goal worth pursuing.

A sequence that makes sense

1. Sun protection daily, generously, year round. Tinted if melasma is your issue.
2. Stop the inflammation at source. Treat active acne, stop picking, and stop any product that stings.
3. Add one active. Niacinamide if your skin is reactive, azelaic acid if it tolerates more. Give it twelve weeks before judging.
4. Add a retinoid at night, slowly, if the first two are steady.
5. See a dermatologist if there is no meaningful change at six months, or sooner for melasma, which benefits from professional management early.

Taking photographs

Take a photo at the start, in the same spot, in daylight, without makeup, and repeat it monthly. Pigmentation changes too slowly for memory to track, which is why people abandon treatments that were quietly working. This one habit prevents more wasted money than any product recommendation.

Bring those photos to us at Naya Baneshwor, Mantra In and Out Square, Kathmandu, and we will give you a straight read on whether what you are using is doing anything.