In short. Melasma is symmetric brown-grey pigmentation of the face, on the cheeks, forehead, upper lip and jawline. It is a chronic, relapsing condition driven by hormones, ultraviolet and visible light, and heat, so treatment aims to fade and control it rather than remove it. Pigment sits at several depths, and even good control needs year-round protection.
Key points
- Melasma is chronic and relapsing; partial improvement is realistic, permanent removal is not.
- Pigment sits at several depths, and visible light as well as UV restimulates it.
- Upgraded light protection is the single highest-value step in any plan.
- Aggressive peels and laser settings can trigger post-inflammatory pigmentation.
- Hormones, heat and light keep it active, so maintenance is year-round.
Why does melasma keep coming back?
Melasma is not just pigment sitting on top. Pigment cells are hyperactive at multiple skin depths, and the dermis below often holds pigment too. Visible light, not only ultraviolet, restimulates it, which is why indoor light and screen-heavy days still flare some patients. Hormones including pregnancy and contraceptives, heat, and a genetically photosensitive pigment system all keep it active, and it often appears or flares with hormonal events. It affects women far more than men. Treatment that works on the surface alone disappoints; treatment that is too aggressive triggers post-inflammatory pigmentation that makes melasma look worse. Partial improvement is achievable, but the condition is managed over years, not erased.
How is it told apart from other pigmentation?
Post-inflammatory pigmentation follows the map of past rashes. Freckles are small, discrete and genetic. A pigment-dropping condition (ashy dermatosis) and medication-induced pigmentation have their own patterns. Any patch that is one-sided, enlarging, or varied in colour deserves dermoscopic examination, and biopsy if atypical.
Assessment sets expectations
Examination under Wood's lamp and a dermatoscope separates epidermal pigment, which is more treatable, from dermal pigment, which is more stubborn, and guides expectations. Hormonal and medication history matters: identifying drivers is treatment. Photographs in consistent lighting track progress over months.
What actually fades melasma?
The approach is layered rather than single. Light protection is upgraded first: broad-spectrum, high-UVA sunscreen plus visible-light protection in tinted iron-oxide formulas, the single highest-value step. Triple-combination topical therapy is the evidence backbone, used in supervised courses. Azelaic acid, tranexamic acid, retinoids and selected brightening agents serve as maintenance. Chemical peels and low-energy pigment lasers can accelerate clearance in skilled hands, but aggressive settings reliably rebound. Oral tranexamic acid is reserved for selected stubborn cases under medical supervision.
| Step | What it contributes | How it is used |
|---|---|---|
| Upgraded light protection | Broad-spectrum, high-UVA sunscreen plus visible-light cover in tinted iron-oxide formulas | Daily, year-round; the single highest-value step |
| Triple-combination topical therapy | The evidence backbone for fading | Supervised courses |
| Adjunct topicals | Azelaic acid, tranexamic acid, retinoids and selected brightening agents | Maintenance |
| Chemical peels and low-energy pigment lasers | Can accelerate clearance in skilled hands | Chosen with restraint; aggressive settings reliably rebound |
| Oral tranexamic acid | An option for selected stubborn cases | Under medical supervision |
Pregnancy and hormonal life
Melasma of pregnancy often fades after delivery, though it may return with the next pregnancy or hormonal change. Planning treatment around childbearing plans is part of honest counselling; some agents are avoided in pregnancy and breastfeeding entirely.
The relapse plan
Even well-controlled melasma returns with sun, heat and hormones. Maintenance means daily protection year-round, gentle maintenance topicals, and early touch-ups at the first sign of return. Patients who understand this cycle get durable results; patients promised a one-time cure get disappointment.
When should a dermatologist review it?
- Pigment is asymmetric, enlarging, or varied in colour — atypical pigment is examined and biopsied.
- Melasma appeared suddenly with other symptoms — rare endocrine causes exist.
- Treatment is causing irritation or darkening — the plan needs changing, not intensifying.
Sources
- American Academy of Dermatology — melasma patient information
- British Association of Dermatologists — melasma patient information
- NICE — Clinical Knowledge Summary on skin pigmentation disorders
Internal links
Frequently asked questions
Will melasma ever go away on its own?
No. Partial improvement is achievable, but melasma is a chronic condition managed over years rather than a spot to be erased. Visible light and not only ultraviolet restimulates it, which is why treatment working on the surface alone disappoints and why relapse is expected.
Why does my melasma keep coming back?
Even well-controlled melasma returns with sun, heat and hormones, because pigment cells stay hyperactive at multiple skin depths. Maintenance means daily protection year-round, gentle maintenance topicals, and early touch-ups at the first sign of return.
Does pregnancy cause melasma?
Hormones including pregnancy and contraceptives are recognised triggers, along with ultraviolet and visible light and heat. Melasma of pregnancy often fades after delivery, though it may return with the next pregnancy or hormonal change, and some agents are avoided while pregnant or breastfeeding.
Risks & Limitations
- Most chronic skin disease is managed rather than cured, and relapse is expected.
- Treatments typically need 8–12 weeks before response can be judged fairly.
- Topical treatment can cause irritation, dryness, peeling and photosensitivity.
- Systemic therapy may require blood monitoring and carries organ, metabolic and pregnancy risks.
- Isotretinoin in particular requires strict monitoring and pregnancy prevention.
- Pigment change is often slow and may be incomplete.
- No treatment works for everyone, and response cannot be predicted with certainty.
When to Seek Care
- A mole or lesion that changes in size, shape or colour, or starts to bleed, itch or crust.
- Fever with a widespread rash, blistering, or rash involving the eyes, mouth or genitals — seek emergency care.
- Rapidly spreading redness, swelling or pain in the skin.
- Facial swelling or difficulty breathing — possible severe reaction; seek emergency care immediately.
- New or worsening symptoms while taking a monitored medication.
References & Further Reading
- American Academy of Dermatology (AAD) — public and clinical guidance
- World Health Organization (WHO) — skin and infectious disease resources
- Chinese Medical Association, Dermatology Branch — clinical guidance
- Cochrane Library — systematic reviews in dermatology
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.