In short. Melasma combination therapy layers strict sun protection, barrier repair, pigment-control topicals, low-strength peels, and only cautiously chosen laser work, in that order. The sequence matters more than any single device: conservative settings and four- to eight-week intervals avoid the rebound that aggressive stand-alone laser can cause.

Key points

  • Melasma is managed, not cured; partial improvement is the realistic goal.
  • Sun protection and barrier repair come first, for several weeks.
  • Pigment-control topicals are introduced gradually, then low-strength peels.
  • Laser is reserved for selected cases after careful trial, never first.
  • Aggressive laser can rebound with worse pigment months later.

A layered programme, in order

Melasma is a chronic, recurring pigment condition driven by hormonal triggers (sun, oestrogen, sometimes pregnancy or oral contraceptives), genetics, and skin type. It is one of the hardest pigment problems to treat because aggressive work often makes it worse. A typical programme starts with strict broad-spectrum sun protection and barrier repair for several weeks. Pigment-control topicals, including hydroquinone or non-hydroquinone alternatives, tranexamic acid, azelaic acid, and retinoids, are introduced gradually. Chemical peels, low-strength glycolic or salicylic, are added conservatively. Laser treatment is reserved for selected cases after careful trial, and may paradoxically worsen melasma if used too aggressively.

What does each layer do?

Layer What it involves When it starts Limit
Sun protection and barrier repair Broad-spectrum sunscreen, reapplied every two hours in strong sun, plus barrier-supportive home care First, for several weeks Not a stand-alone treatment
Pigment-control topicals Hydroquinone or non-hydroquinone alternatives, tranexamic acid, azelaic acid, retinoids, introduced gradually Once the barrier is stable Limited reach into deep dermal pigment
Low-strength peels Glycolic or salicylic peels, added conservatively Once topicals are tolerated Mild flaking is expected; it does not replace maintenance
Laser A carefully selected device at conservative parameters, after a trial Last, for selected cases only Aggressive use can worsen melasma months later
Maintenance Continued topicals, strict sun protection, and review between sessions Between sessions and indefinitely afterwards Recurrence is common without it

The sequence is the treatment. Each layer is added only after the one before it is tolerated, and the clinic visit supplies the in-clinic modality while home pigment control continues.

Who does combination therapy suit, and when does it not work?

It is used for epidermal and mixed melasma that has not responded to sun protection and topical care alone. It does not work for deep dermal melasma, which has limited response to any modality. Realistic improvement is partial, and recurrence without strict maintenance is common.

What happens at each clinic visit?

Each visit combines the appropriate in-clinic modality (a topical boost, a low-strength peel, or a carefully selected laser) with continued home pigment control. Sessions are spaced four to eight weeks apart. The clinician adjusts the plan based on the response and any pigment shift between sessions.

Why is conservative laser work the rule on melanin-rich skin?

On melanin-rich skin, melasma is common and laser treatment carries meaningful paradox risk. Aggressive laser often rebounds with worse pigment months later. Conservative parameters, longer intervals, strict sun protection, and ongoing topical control are the standard. Pigment is managed, not cured, and honest expectation-setting is part of safe care.

What does recovery involve?

Recovery depends on the modality: minimal for home care, mild flaking for low-strength peels. Strict sun protection is the constant. Pigment-control topicals continue between sessions and indefinitely afterwards. Sunscreen reapplication every two hours in strong sun is the most powerful single intervention.

What are the risks, and when should care be reviewed?

Side effects depend on the modality: irritation from actives, flaking from peels, paradoxical pigment worsening from aggressive laser. Less common effects include post-inflammatory hyperpigmentation and hypopigmentation. Realistic discussion of expected improvement, the multi-session nature of the work, and the chronic nature of melasma is part of safe practice.

Seek review before or after treatment if:

  • You are pregnant, breastfeeding, or on hormonal therapy: melasma treatment may need to be deferred or modified.
  • You have a sudden change in pigment or asymmetric pigment: full dermatology review is needed before any laser.
  • You develop persistent irritation, blistering, or pigment worsening after treatment: the plan needs review.

Sources

Internal links

Frequently asked questions

Can melasma be cured?

No. Melasma is chronic and recurring, driven by sun, hormonal triggers, genetics and skin type. It is managed rather than cured, and partial improvement is a realistic goal. Deep dermal melasma has limited response to any modality.

Why can laser make melasma worse?

Aggressive laser treatment can paradoxically rebound with worse pigment months later, which is why laser is reserved for selected cases after careful trial. Conservative parameters, longer intervals, strict sun protection and ongoing topical control are the standard.

What is the single most important step?

Strict broad-spectrum sun protection, reapplied every two hours in strong sun, is the most powerful single intervention. Barrier repair and pigment-control topicals come next, with peels added conservatively and laser last. Pregnancy or hormonal therapy may mean treatment is deferred or modified.

Risks & Limitations

  • Burns and blistering if settings do not match the skin.
  • Post-inflammatory hyperpigmentation, particularly in darker skin types, which may take months to settle.
  • Hypopigmentation (lightening) of treated skin, which can be permanent.
  • Scarring, including hypertrophic scarring, which is uncommon but real.
  • Infection, including reactivation of herpes simplex after resurfacing.
  • Acne or milia flare during recovery.
  • Results are incremental and most concerns need several sessions. Melasma may rebound or worsen with aggressive treatment.

When to Seek Care

  • Blistering, weeping or broken skin beyond the expected reaction.
  • Severe pain that is worsening rather than settling.
  • Spreading redness, warmth, pus or fever.
  • New darkening or firmness that looks like scarring at the treated area.
  • Any change in a treated pigmented lesion — it should be reviewed, not retreated.

References & Further Reading

  • American Academy of Dermatology (AAD) — laser and energy device information
  • American Society for Laser Medicine & Surgery (ASLMS)
  • National Medical Products Administration (NMPA, China) — device registration status
  • Cochrane Library — systematic reviews in laser dermatology

Medically reviewed by Ke He, MD (何锞), Deputy Director & Head of Skin & Laser Aesthetics. Last reviewed: 18 September 2026.

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.