Conditions · Face · Pigment Disorders

Facial Pigmentation: Which Brown Is Yours?

Medically reviewed by Dr Sin Yong · Last reviewed 7 October 2026 · 9 min read · Assessed personally by Dr Sin Yong · Jump to questions

“Pigmentation” is not one condition. Melasma, solar lentigines, post-inflammatory hyperpigmentation and freckles are different diseases with different mechanisms — and treatment that clears one can permanently worsen another. Diagnosis comes before any laser.

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Brown patches on the face are not one condition: melasma, sun spots (solar lentigines), post-inflammatory hyperpigmentation and freckles are different disorders with different mechanisms. Diagnosis comes before any laser, because treatment that suits sun spots or freckles can flare melasma, so a physician first identifies which type of facial pigmentation is present.

Key takeaways
  • Brown patches on the face are not one condition: melasma, sun spots, post-inflammatory hyperpigmentation and freckles are different disorders.
  • Each type has a different mechanism and a different treatment, so diagnosis comes before any laser.
  • Melasma is managed rather than cured, and a laser suited to sun spots can flare it.
  • Whitening facials and scrubbing do not reach dermal pigment.
  • Dr Sin Yong, an aesthetic physician, examines the skin personally, with a dermatoscope where needed.
On this page
  1. Key Facts
  2. Four browns, four diseases
  3. Why does the wrong laser make pigmentation worse?
  4. What actually works for facial pigmentation?
  5. What doesn't work for facial pigmentation?
  6. Dr Sin Yong’s Viewpoint
  7. Which type do you have?
  8. What does not work, and why
  9. When to see a doctor
  10. Myths we hear in clinic
  11. Which brown is it? Where each type is covered in depth
  12. Questions Patients Actually Ask

Key Facts

Melasma mechanism
Multifactorial: UV and visible light, hormones, vascular and dermal factors
Melasma pattern
Symmetrical patches — cheeks, forehead, upper lip
Highest-risk skin types
Fitzpatrick III–V — the majority of Singapore skin
Solar lentigines
Discrete, well-bordered spots on sun-exposed sites
PIH
Pigment left behind by inflammation — acne, eczema, injury, or an aggressive laser
Cardinal rule
Melasma is managed, not cured — relapse is part of the disease
Who assesses this
A physician with a dermatoscope — diagnosis precedes any laser
Typical first step
Diagnosis of which brown you have; treatment plans differ completely by type
A woman applying sunscreen to her cheek in a bathroom mirror
Assessment comes before any device or injectable is chosen.

Four browns, four diseases

Melasma is a chronic, relapsing disorder driven by far more than sunlight: current reviews describe photodamage, hormonal influence, vascular changes and dermal inflammation acting together on genetically susceptible skin [1]. It forms soft-edged, symmetrical patches. Solar lentigines (sunspots) are discrete, sharply bordered marks of cumulative UV. Post-inflammatory hyperpigmentation is the footprint of a resolved insult — a pimple, a burn, or an over-aggressive treatment. Freckles are genetic and UV-responsive. Under the physician's lamp and history-taking these separate cleanly; to the bathroom mirror they all look like “dark spots”.

A woman in a wide-brimmed sun hat applying sunscreen in a clinic room
Which brown it is decides the treatment; diagnosis comes before any laser.
Laser chromophores and wavelengthsThree columns for melanin, haemoglobin and water, each with its typical targets, example wavelengths (532/755/1064 nm, 585–595 nm, 2940/10600 nm) and the class of laser that uses them.Laser chromophores: the target decides the wavelengthMelanintargetspigment, tattoo ink, hair532 · 755 · 1064 nmexample laserspico and Q-switchedlasers, alexandriteHaemoglobintargetsredness, visible vessels585 – 595 nmexample laserspulsed dye andvascular lasersWatertargetsresurfacing, texture, scars2940 · 10600 nmexample lasersEr:YAG and CO2ablative or fractionalEach wavelength is absorbed mainly by one chromophore, so no single laser suits every concern.
Melanin, haemoglobin and water each absorb different wavelengths, which is why one laser does not suit every concern.

Why does the wrong laser make pigmentation worse?

Lentigines and freckles respond well to pigment lasers. Melasma is the trap: heat the wrong melasma with the wrong settings and the disease flares — a network meta-analysis of melasma treatments ranks combination approaches built around topicals and gentle modalities above aggressive monotherapy lasers, precisely because rebound pigmentation is a recognised outcome [2]. This is why Dr Sin Yong will not laser a brown patch that has not been diagnosed, and why “pigmentation removal” packages that skip diagnosis are a red flag anywhere.

What actually works for facial pigmentation?

For melasma: strict photoprotection including visible light, evidence-based topicals, and — where indicated — conservative low-fluence laser toning as an adjunct, accepting that maintenance is part of the plan [2,3]. For lentigines and freckles: targeted pigment lasers such as the picosecond platforms on the T2 Frax Radiance and laser toning pages. For PIH: treat the cause first, then the pigment. The melasma page covers Dr Sin Yong's staged protocol in depth.

What doesn't work for facial pigmentation?

“Whitening” facials do not reach dermal pigment. Scrubbing exfoliates the surface while the melanocytes producing the pigment sit below, unbothered — and friction itself can deepen melasma. And any clinic promising to cure melasma is promising a relapse: the honest endpoint is control.

“Melasma is managed, not cured. A clinic promising a cure is promising a relapse.”

— Dr Sin Yong

Dr Sin Yong’s Viewpoint

The pigmentation patients I worry about are the ones who walk in asking for a laser rather than a diagnosis. Four different diseases wear the same brown coat, and one of them — melasma — punishes the wrong laser badly. I will not fire a laser at an undiagnosed patch, and I would tell you to walk out of any clinic that will.

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Which pigmentation type: decision guideFlowchart routing a brown facial mark by whether it is raised or changing, followed inflammation, forms symmetrical hormonal patches or discrete sun spots, to mole check, PIH, melasma, freckles or sun spots, or further assessment, with dermoscopy and Wood's lamp before any device.Which brown mark is it? How the assessment is routedA brown mark on the faceIs it raised, or has it changed insize, colour or edge recently?yesMole / naevus check first:dermoscopy, referral if atypicalnoDid it follow a pimple, rash, burn,peel or procedure?yesPIH: treat the cause andthe inflammation firstnoSymmetrical patches on cheeks orforehead, worse with heat, sun, hormones?yesMelasma: triggers first,low-energy plan, no aggressive lasernoSmall, discrete spots on sun-exposedskin, darker after sun?yesFreckles / sun spots:pigment laser assessmentnoOther or mixed (e.g. Hori's naevus):further assessmentSeveral types often coexist on oneface and are treated in a set order.Assessment with dermoscopy and Wood's lamp comes before any device is chosen.
How a brown facial mark is routed to mole check, PIH, melasma or sun spots, with dermoscopy and Wood's lamp before any device.

Which type do you have?

Four common facial browns and a mixed pattern: how to recognise each and what it needs
Type / look-alikeHow to recognise itWhat it needsWhat does not work
MelasmaSymmetrical, soft-edged patches on cheeks, forehead or upper lipDiagnosis, photoprotection including visible light, topicals; gentle laser as adjunctAggressive laser, which can cause rebound pigmentation
Solar lentigines (sun spots)Discrete, sharply bordered spots on sun-exposed sitesDiagnosis, then pigment-targeted treatmentWhitening facials and scrubbing
Post-inflammatory hyperpigmentationFlat brown-grey mark left by acne, injury or aggressive treatmentStop the inflammation, protect from sun, then treat pigmentScrubbing and picking, which prolong inflammation
FrecklesSmall, genetic spots that darken with UVTreatment only if bothersome, with sun protectionSkipping sun protection, as they return with exposure
Mixed pigmentationMelasma coexisting with spots or post-inflammatory marksEach component identified, then a staged planTreating everything with one laser

What does not work, and why

When to see a doctor

Myths we hear in clinic

“All dark spots can be treated with the same laser.”

Melasma can flare with the settings that suit sun spots, so diagnosis comes before any laser.

“Whitening facials lighten pigmentation.”

They act on the surface and do not reach pigment held in deeper layers.

Which brown is it? Where each type is covered in depth

If the patches are symmetrical, soft-edged and sit on the cheeks, forehead or upper lip, melasma is the first possibility, and it behaves differently from every other brown. It is chronic and relapsing, so the aim is control with photoprotection, topicals and, where indicated, gentle energy as an adjunct. The melasma treatment page sets out the staged approach in depth. If the marks are discrete, sharply bordered and sit where the sun has fallen for years, they are more likely solar lentigines, and the sun spots page covers how they are told apart from lesions that need a dermatoscope examination.

If a mark appeared where a spot, a scratch, a burn or an over-aggressive treatment used to be, it may be post-inflammatory hyperpigmentation, where the first job is to settle the inflammation that is feeding it before any pigment treatment. The post-inflammatory hyperpigmentation page covers that order of events. Whichever page you start on, the rule is the same: a patch is identified before it is treated, and a single new, changing, irregular or bleeding spot is examined with a dermatoscope first. Mixed patterns are common, so more than one of these pages may apply to the same face.

Questions Patients Actually Ask

How do I know if my pigmentation is melasma?+

Symmetry and softness are the clues: melasma forms mirror-image, soft-edged patches on cheeks, forehead or upper lip. Confirmation needs a physician's examination — sometimes with specialised light.

Why did my dark spots get worse after laser?+

Either the diagnosis was melasma treated with too much heat, or the treatment triggered post-inflammatory hyperpigmentation. Both are known, documented complications of mismatched treatment.

Does sunscreen really matter that much?+

For melasma it is the single non-negotiable. Reviews implicate visible light as well as UV, which is why tinted, iron-oxide-containing sunscreen is standard advice.

Can pregnancy pigmentation fade on its own?+

Melasma appearing in pregnancy can fade postpartum, though not always fully. Persistent patches deserve diagnosis before any active treatment.

Are freckles worth treating?+

Only if they bother you — they are benign. They respond well to pigment lasers but return with sun exposure if unprotected.

How long does PIH take to fade?+

Epidermal PIH often fades over months; dermal PIH is slower and may need targeted treatment. Faster is possible; instant is not honest.

What causes pigmentation on the face?+
It depends on the type. Melasma is multifactorial, involving UV and visible light, hormones, vascular and dermal factors. Sun spots reflect cumulative UV exposure, post-inflammatory hyperpigmentation follows inflammation such as acne or injury, and freckles are genetic and UV-responsive. Examination, sometimes with a dermatoscope, separates them, and the right treatment differs completely by type.
Can facial pigmentation be fully removed?+
It depends on the type. Melasma is managed rather than cured and can relapse. Sun spots and freckles can be treated but return with unprotected sun exposure, and post-inflammatory marks fade as the cause is controlled. An assessment decides what is realistic and whether treatment is advised.
Which treatment suits facial pigmentation?+
It depends on which brown you have. Melasma suits photoprotection, topicals and conservative energy as an adjunct, sun spots and freckles suit targeted pigment treatment, and post-inflammatory marks need the inflammation controlled first. Depth of pigment, skin type, triggers and any coexisting type decide the plan, and diagnosis comes first.
How much does pigmentation treatment cost in Singapore?+
The fee depends on the type of pigmentation, the extent of the area, the topicals and devices chosen, whether several types are treated together, and how often review is planned. A written quote is given at consultation after diagnosis, and the assessment decides whether treatment is advised at all.

References

  1. Pathogenesis of Melasma Explained — PMC.
  2. Efficacy and Safety of Different Treatments for Melasma: Network Meta-Analysis — PMC.
  3. An Update on New and Existing Treatments for the Management of Melasma — PubMed.

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Medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last updated 7 October 2026 · Editorial policy

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