Pigmentation and uneven tone

Reviewed by Dr Ong Jin Khang

Brown marks look like one problem. They are at least three. A sun spot, melasma and the mark left behind by an old breakout can sit on the same cheek and look nearly identical, yet each needs different handling, and the treatment that clears one can make another worse. This is the concern where the diagnosis earns its keep.

The same brown patch can be three different problems.

What is actually going on

Pigment is the skin's response to provocation. Ultraviolet light, heat, hormones, friction and inflammation all tell pigment cells to produce more, and the pattern they leave behind depends on the trigger. Sun spots, properly called solar lentigines, are discrete patches from cumulative sun exposure. Melasma is a hormonally influenced pigmentation that sits deeper, often symmetrical across the cheeks or upper lip, and behaves less like a stain and more like a condition that needs long-term management. Post-inflammatory hyperpigmentation is the shadow left after acne, a rash or an injury, and it is common in Malaysian skin.

These look similar on the surface. Underneath, they differ in depth, in trigger and in temperament, which is why the assessment matters more than the machine. The marks are examined in proper light, sometimes under a diagnostic lamp, before anything is decided.

The honest map

For sun spots, freckles and general sun damage, a picosecond laser is usually the right tool. PicoSure breaks pigment into fragments the body clears over the following days, with little heat and little downtime. Discrete spots tend to respond well over a small number of sessions.

Melasma is a different conversation. It can be approached with laser, but conservatively and only in selected cases, because aggressive laser on the wrong melasma makes it darker. The foundation is usually less glamorous: strict sun protection, a prescription topical regime, control of heat and hormonal triggers, and patience. The laser, when it is used at all, is a supporting instrument rather than the answer.

Post-inflammatory marks often need the cause treated first. Clearing the shadow while the acne that created it is still active is painting over a leak. Sequence matters, and the plan usually runs cause first, pigment second.

When we would say no

We do not laser a mark that has not been diagnosed. A pigmented spot that looks atypical, has changed recently, or does not fit a benign pattern is referred for a specialist opinion before any aesthetic treatment is considered. That is rare, but it is not negotiable.

We also decline to treat melasma as if it were a simple sun spot; managed carelessly, it rewards aggression with rebound. And when a patient cannot yet commit to daily sun protection, the honest advice is to wait, because in this climate the sun will out-work any laser.

Common questions

What is the best treatment for pigmentation?

There is no single best treatment, because pigmentation is not a single problem. Sun spots respond to a picosecond laser, melasma usually starts with topicals and strict sun protection, and post-inflammatory marks often need their cause treated first. The right answer follows the diagnosis, which is why assessment comes before any booking.

Why did my pigmentation come back after treatment?

Usually because the trigger is still active. Melasma in particular rebounds with sun, heat and hormonal shifts, so it is managed over time rather than erased once. Sun spots can also appear in new places if exposure continues. Maintenance is sun protection first, and a review when new marks appear.

Can pigmentation be removed in one session?

A single, well-defined sun spot may clear in one or two sessions. Diffuse sun damage takes a course, and melasma is managed rather than removed. A promise of complete removal of any brown mark in one visit describes marketing, not skin.

Is laser safe for darker skin tones?

It can be, with the right settings and the right selection. Skin types common in Malaysia carry a higher risk of post-inflammatory pigmentation if treated aggressively, which is why energy, wavelength and interval are chosen for the individual skin rather than taken from a standard protocol.

Do I need a laser at all?

Not always. Some pigmentation is handled better with a prescription topical regime and disciplined sun protection, and some marks are best left alone. The consultation exists to sort out which group yours falls into before money is spent on the wrong one.

From the journal

Not sure which kind yours is?

That is the assessment's job, not yours. In person, with Dr Ong: the marks are examined, the diagnosis is made, and the plan follows it, which may or may not involve a laser.

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