Medical-grade laser for idiopathic guttate hypomelanosis, vitiligo and post-inflammatory hypopigmentation — restoring melanocyte activity and improving skin tone uniformity. Singapore, Orchard Road.
White spots on the skin — medically called hypopigmented lesions — occur when melanocytes (the cells that produce skin pigment) are damaged, absent or under-stimulated in a localised area. The appearance ranges from small scattered flat spots to larger irregular patches depending on the underlying cause.
In Singapore's tropical climate with high UV exposure, idiopathic guttate hypomelanosis (IGH) is particularly common — presenting as multiple small white spots on the forearms, shins and décolletage in adults from the age of 40 onwards. Post-inflammatory hypopigmentation following acne, eczema or previous procedures is also frequently seen.
Dr Sin Yong conducts a thorough dermoscopic assessment to accurately classify your white spots before selecting the appropriate treatment modality. Not all white spots respond to the same treatment — accurate diagnosis is the essential first step.
Small (2–5mm) flat white spots on sun-exposed areas — forearms, shins, shoulders. Caused by cumulative UV damage over decades. Extremely common in Singapore adults over 40.
White patches following skin inflammation from acne, eczema, psoriasis or previous procedures. The melanocytes are suppressed rather than destroyed, making recovery more likely with treatment.
Fungal overgrowth (Malassezia) inhibits melanin production in affected skin. Typically presents as multiple small white patches on the trunk. Requires antifungal treatment first, then laser for residual hypopigmentation.
Autoimmune destruction of melanocytes causing well-defined depigmented patches. Requires specialist management — laser can stimulate residual melanocyte activity at the lesion borders.
Depigmentation following aggressive chemical peels, cryotherapy or laser treatments by insufficiently calibrated devices. FSX laser can help restore pigment distribution.
Congenital hypopigmented patches present from birth. Melanocytes are present but dysfunctional. Response to laser is variable but can improve lesion appearance.
Dr Sin Yong uses the FSX (Flawless Smooth Skin) Laser protocol — a multi-wavelength laser approach — to address hypopigmentation by stimulating melanocyte proliferation and pigment migration. The FSX laser delivers calibrated energy at wavelengths that activate melanocyte stem cells in the hair follicle reservoir and stimulate migration into depigmented skin.
Each lesion is assessed under dermoscopy to confirm the diagnosis and categorise lesion type. White spots caused by IGH, post-inflammatory hypopigmentation and vitiligo each receive a different laser parameter set — Dr Sin Yong does not use a generic "one size fits all" approach.
The FSX laser is applied to each white spot individually. The wavelength combination is selected based on lesion type and depth. The treatment stimulates melanocytes in the follicular reservoir at the lesion border to proliferate and migrate centripetally — repopulating the hypopigmented area with functioning pigment-producing cells.
Sessions are repeated every 3–4 weeks. Repigmentation is gradual — initial islands of pigment appear first, expanding over subsequent sessions. Most patients complete 3–6 sessions depending on lesion chronicity, size and location.
Pigment returns gradually as melanocytes repopulate the treated area. Initial results are visible from session 2–3, with full improvement over 3–6 months.
Post-inflammatory hypopigmentation tends to respond best. IGH shows moderate improvement. Vitiligo response varies by location — facial lesions respond better than hands and feet.
For IGH and larger hypopigmented areas, FSX laser may be combined with topical agents (tacrolimus, retinoids) that support melanocyte activity. Dr Sin Yong designs a full protocol combining laser and home care for each patient.
Daily SPF 50 sunscreen is essential to maintain results and prevent new IGH lesions. Lifestyle sun protection — hats, UV clothing — is strongly recommended alongside treatment.
White spots or white patches on skin have several causes. The most common in Singapore are idiopathic guttate hypomelanosis (IGH) — small, flat white spots that appear on sun-exposed areas after years of UV exposure — pityriasis versicolor (a fungal skin condition), vitiligo, post-inflammatory hypopigmentation following acne or eczema, and chemical or laser-induced depigmentation. An accurate diagnosis is essential before treatment, as each condition responds to different therapies.
Yes — laser treatment for white spots depends on the underlying cause. For idiopathic guttate hypomelanosis and post-inflammatory hypopigmentation, the FSX (Flawless Smooth Skin) laser at Dr Sin Yong's practice uses a specific combination of wavelengths to stimulate melanocyte activity and improve pigment distribution. For vitiligo, excimer-wavelength laser energy can reactivate melanocytes in depigmented patches. Results vary based on lesion type, skin tone and chronicity of the white spots.
Most patients with idiopathic guttate hypomelanosis or post-inflammatory hypopigmentation require between 3–6 FSX laser sessions spaced 3–4 weeks apart to see meaningful improvement. Vitiligo typically requires more sessions, and response varies by body location — facial lesions tend to respond better than acral (hands and feet) lesions. Dr Sin Yong will assess your lesions and give a realistic expectation of results during consultation.
The FSX laser protocol used by Dr Sin Yong is specifically calibrated for Asian and darker Fitzpatrick skin types (III–VI). The parameters are selected to stimulate melanocyte activity without causing post-inflammatory hyperpigmentation or paradoxical worsening. Patient safety and skin type appropriateness are assessed at every session.
Idiopathic guttate hypomelanosis (IGH) is a benign skin condition presenting as multiple small, well-defined white spots — typically 2–5mm — on sun-exposed areas such as the forearms, shins and shoulders. It is most common in adults over 40 and is associated with cumulative UV exposure. While medically harmless, IGH can be aesthetically distressing. Laser treatment, topical retinoids and cryotherapy are the main treatment options — laser being the most effective for improving melanocyte repopulation.
Dr Sin Yong assesses each hypopigmented lesion individually before recommending a treatment protocol. Available on Orchard Road, Singapore.
White spots (idiopathic guttate hypomelanosis and other hypopigmentation) are caused by localised loss of melanin, often from sun damage, ageing or previous skin inflammation.
Yes. Targeted laser stimulates melanocyte activity and repigmentation in affected areas, helping to even out skin tone. A series of sessions is usually required for gradual improvement.
Most patients need several sessions spaced a few weeks apart. Results vary depending on the cause, depth and duration of the hypopigmentation.
Yes, when performed with calibrated settings for darker skin types. Dr Sin Yong uses conservative parameters to minimise the risk of post-inflammatory pigmentation in Asian skin.