Why Melasma Keeps Coming Back — and When Laser Makes It Worse

Why does melasma come back after treatment?

Because the pigment you can see is a symptom, not the disease. Melasma involves pigment-producing cells that are overactive and remain sensitive to their triggers even after the visible discolouration has faded. Remove the pigment without changing the triggers and the same cells produce it again.

The main drivers are ultraviolet light, visible light — including from screens and indoor lighting — infrared heat, hormonal factors such as pregnancy and hormonal contraception, and skin inflammation from irritating products or procedures. In coastal Kerala and Karnataka, high year-round UV and ambient heat mean two of the strongest triggers are present almost daily.

When does laser make melasma worse?

Laser and energy-based treatment can worsen melasma when it delivers too much heat or too much energy into skin that is already primed to over-produce pigment. The result is rebound hyperpigmentation — the patch returns darker than before, sometimes weeks after treatment appeared successful. This risk is higher on Fitzpatrick IV to V skin, which describes most Indian patients.

Specific situations where caution is warranted:

• Actively inflamed or recently irritated melasma — treating through inflammation tends to worsen it.
• Aggressive settings chosen to produce fast visible clearing.
• Ablative or heavily thermal devices used as a first-line approach for melasma.
• Any treatment plan that has not established sun protection and topical control first.
• Treatment during pregnancy or while hormonal triggers remain uncontrolled.
• Repeated sessions continued despite the patch darkening after previous ones.

This does not mean lasers have no role in pigmentation. It means melasma specifically is the diagnosis where restraint matters most, and where the sequence — protect, then topical, then consider device treatment — matters more than the device itself.

Is my pigmentation actually melasma?

This matters because the conditions look similar and respond very differently. Self-diagnosis from photographs online is unreliable, and treating the wrong one wastes months.

What actually helps keep it controlled?

• Daily broad-spectrum sunscreen, reapplied — the single highest-impact factor. Tinted formulations containing iron oxide also block visible light, which matters in melasma specifically.
• Physical protection — hats, shade, avoiding peak sun. Relevant year-round in this climate, not seasonally.
• Managing heat exposure where practical, including cooking heat and hot showers on the face.
• Prescribed topical therapy, used consistently and reviewed by a doctor rather than continued indefinitely without supervision.
• Reviewing hormonal contributors with your physician or gynaecologist where relevant.
• Avoiding harsh scrubs, unregulated skin-lightening creams and frequent irritating procedures — inflammation is itself a trigger.
• Maintenance after clearing, rather than stopping treatment the moment the skin looks better.

What should I expect from treatment realistically?

Realistic goals are meaningful lightening, slower and less frequent relapse, and a maintenance routine you can sustain. Timelines are measured in months, not weeks. Some patients achieve long stretches of near-clear skin; most will see some return with sun exposure, pregnancy or hormonal change, and will need maintenance.

Any promise of permanent removal is not consistent with how melasma behaves.

This article is general health information and is not a diagnosis, prescription or treatment recommendation for any individual. Outcomes differ between people. Suitability for any procedure can only be established at an in-person medical consultation.