{
  "what": "Pigmentation removal is a question of matching the laser to the pigment, because sun spots, freckles, post-inflammatory marks, melasma, Hori's naevus and seborrhoeic keratosis sit at different depths. At Dr Sin Yong's practice on Orchard Road, Singapore, the pigment is identified first: discrete spots go to the T2 Frax Radiance protocol on the DEKA TORO, inflammation-driven tone to R2 Glow, and raised brown lesions are removed physically. Melasma is managed rather than removed, and in Fitzpatrick III to V skin settings are chosen to limit post-inflammatory darkening.",
  "key_facts": [
    "Diagnosis first: the pigment type is identified before any laser, with magnification where a lesion needs it",
    "Spots: sun spots and freckles are treated with T2 Frax Radiance on the DEKA TORO, 785 nm picosecond with 532 nm and 1064 nm nanosecond emissions chosen by depth",
    "Tone: tone driven by low-grade inflammation is approached with R2 Glow, long-pulsed 755 nm alexandrite and 1064 nm Nd:YAG directed at the driver rather than the deposit; the two together are R2T2",
    "Raised lesions: seborrhoeic keratosis is removed with CO2 laser, radiofrequency or shave after examination; an atypical or changing lesion is excised for histology or referred rather than lasered",
    "Melasma: starts with sun protection and medical treatment; if a laser is used it begins with R2 Glow alone",
    "Skin type: post-inflammatory hyperpigmentation is the main risk in Fitzpatrick III to V skin, so longer wavelengths, lower fluence, staging and test areas are used where indicated",
    "Recurrence: laser fragments pigment already made and does not change why the skin made it, so pigment can return and maintenance with daily sunscreen and review is part of the plan"
  ],
  "references": [
    "Treatment of pigmentary disorders using picosecond laser in Asian patients: a meta-analysis and systematic review. Dermatol Ther 2021. https://pubmed.ncbi.nlm.nih.gov/33368885/",
    "A review of laser and light therapy in melasma. Int J Womens Dermatol 2017. https://pubmed.ncbi.nlm.nih.gov/28492049/",
    "Randomized, evaluator-blinded comparative study of a KTP 532-nm picosecond laser and an alexandrite 755-nm picosecond laser for the treatment of solar lentigines in Asians. J Cosmet Dermatol 2022. https://pubmed.ncbi.nlm.nih.gov/35129875/",
    "Lasers and Energy-Based Devices for Treatment of Pigmented Lesions With Histologic and Ultrastructural Imaging Correlation: A Systematic Review. Dermatol Surg 2026. https://pubmed.ncbi.nlm.nih.gov/40767860/"
  ],
  "owner_url": "https://drsinyong.com/pigmentation-removal-singapore/",
  "doctor": "Dr Sin Yong, aesthetic physician, Orchard Road, Singapore",
  "updated": "2026-10-30"
}