Melasma: Why It Remains the Hardest Pigment Disorder to Treat
What Is Melasma?
Melasma presents as symmetric brown patches on the cheeks, forehead and upper lip. Histology shows both epidermal melanin excess and dermal melanophages, often with vascular dilatation and barrier impairment. It is among the most common and stubborn pigment complaints in women of reproductive age.
Why “Zapping” Fails
- A condition, not a spot: UV, hormones, vascular factors and barrier damage continuously drive melanocytes — cleared pigment recurs.
- Heat backfires: high-fluence laser inflammation reactivates melanocytes, especially in darker skin — the basis of “it got darker after treatment”.
- Vascular component ignored: dermal vessels often accompany melasma; redness treatment belongs in the plan.
Layered Strategy
- Foundation (~70% of weight): strict photoprotection, barrier repair, topicals such as tranexamic acid and niacinamide per physician guidance.
- Systemic: oral tranexamic acid under medical assessment.
- Energy-based (adjunct): low-fluence large-spot 1064 nm, low-fluence picosecond, DPL for vessels — low energy, long intervals, few sessions.
- Mesotherapy bridge: microneedle-assisted tranexamic acid between topicals and devices.
Configuration Advice for Clinics
Serving melasma clients requires fine-stepped, stable low-fluence devices: low-fluence picosecond or large-spot 1064 (picosecond platform, Q-switched platform) plus narrowband DPL for the vascular component (DPL+Nd:YAG combo), with sunscreen and repair follow-up built in.
FAQ
Can melasma be cured?
No. It is chronic and relapsing; the goal is no new patches, fading of existing ones and stability. “Permanent cure” claims are unreliable.
Does pregnancy melasma fade on its own?
Partially, after hormone stabilization postpartum — but sun exposure blocks fading. Months 6-12 postpartum are a reasonable window to start structured management.