WHY DOES PIGMENTATION HAPPEN — AND WHY IS IT SO DIFFICULT TO TREAT? ☀️

Pigmentation is one of the most common skin concerns we see in clinic, but many patients are surprised to learn that “pigmentation” is actually a broad term covering several completely different conditions.

Freckles, melasma, post-inflammatory pigmentation, and redness after acne may all appear as “spots” on the skin, but they behave very differently beneath the surface. Understanding the underlying pathology is important because the treatment approach for each condition is different.

✨ FRECKLES (EPHELIDES)

Freckles are small, well-defined brown spots caused by increased melanin production after UV exposure. Unlike melasma, the number of pigment-producing cells is usually normal, they are simply more active.

Freckles often darken with sun exposure and lighten during periods of reduced UV exposure.

One of the most effective treatments for freckles is the 532nm wavelength laser, which specifically targets superficial epidermal pigment. Patients often notice that freckles darken temporarily before flaking off over the following days.

However, stronger laser settings are not always better.

In Asian skin types especially, aggressive treatment can trigger post-inflammatory hyperpigmentation (PIH), where inflammation itself stimulates additional pigment production. This is why careful laser selection and conservative parameters are important for safer healing.

✨ MELASMA

Melasma is one of the most frustrating and complex pigmentary disorders to treat.

It commonly presents as symmetrical brown or grey-brown patches over the cheeks, forehead, upper lip, or jawline. Unlike freckles, melasma is not simply “surface pigment.”

Melasma is now understood to be a chronic inflammatory and vascular condition involving:
▫️ Excess melanin production
▫️ Increased vascularity and blood vessels
▫️ UV and visible light stimulation
▫️ Hormonal influence
▫️ Skin barrier dysfunction
▫️ Chronic inflammation within the skin

This explains why melasma tends to recur easily — especially after sun exposure, heat exposure, or overly aggressive treatments.

For this reason, melasma treatment usually requires a multimodal approach rather than relying on laser treatment alone.

At Emberwood Aesthetics, treatment plans may include:

☀️ STRICT SUN PROTECTION & SUN AVOIDANCE
UV exposure is one of the strongest triggers for melasma recurrence. Visible light and heat may also worsen pigmentation. Daily sunscreen use, hats, umbrellas, and minimising prolonged sun exposure are essential parts of treatment.

✨ TOPICAL TREATMENTS
Medical-grade topical agents help reduce melanin production and pigment transfer within the skin. Depending on skin type and sensitivity, this may include pigment suppressors and retinoid-based formulations.

✨ ORAL MEDICATION
Selected patients may benefit from oral medications such as tranexamic acid, which may help reduce the vascular and inflammatory pathways involved in melasma formation.

✨ PICO LASER
Pico lasers deliver ultra-short pulses that help break down pigment particles while minimising thermal injury to surrounding skin. Lower-fluence pico toning approaches may gradually improve melasma while reducing the risk of rebound pigmentation compared to overly aggressive resurfacing.

✨ VASCULAR LASERS
Many patients do not realise that melasma often contains an important vascular component. Increased blood vessels and vascular signalling may stimulate melanocytes to produce more pigment.

Vascular lasers help target abnormal redness and vascularity within the skin, which may improve the inflammatory pathways contributing to melasma recurrence.

✨ POST-INFLAMMATORY HYPERPIGMENTATION (PIH)

PIH refers to brown marks left behind after inflammation or injury to the skin. Common triggers include acne, eczema, scratching, burns, or overly aggressive procedures.

Inflammation stimulates melanocytes to produce excess pigment during the healing process.

PIH is especially common in darker skin types because melanocytes are more reactive.

Treatment may involve:
▫️ Pigment lasers
▫️ Topical lightening agents
▫️ Gentle chemical peels
▫️ Sun protection
▫️ Controlling the underlying inflammation

✨ POST-INFLAMMATORY ERYTHEMA (PIE)

Unlike PIH, PIE is redness rather than brown pigmentation.

PIE occurs due to dilated or damaged superficial blood vessels after inflammation, commonly following acne.

This is why some “acne marks” look pink or red rather than brown.

PIE often responds better to vascular lasers rather than pigment lasers alone.

One of the most important things in pigmentation treatment is understanding that not all pigmentation should be treated aggressively. In fact, excessive inflammation may worsen certain conditions — especially melasma and PIH-prone skin.

Successful pigmentation treatment often involves balancing efficacy with skin barrier preservation and long-term maintenance 🤍

Book a consultation at Emberwood Aesthetics to explore a personalised treatment plan for your pigmentation concerns.