Broken Capillaries Laser Myeongdong, Seoul, Korea — 2026

Selective photothermolysis at 532nm and 1064nm — why these wavelengths work

Selective photothermolysis is the principle that laser energy at a specific wavelength is absorbed preferentially by a target chromophore — in the case of broken capillaries and telangiectasia, that chromophore is oxyhemoglobin inside the vessel. The 532nm wavelength is strongly absorbed by oxyhemoglobin, while 1064nm reaches deeper vessels with lower melanin absorption. When the vessel is heated above the coagulation threshold it collapses, while surrounding collagen and keratinocytes are largely spared. This selectivity is why vascular lasers have long been used for facial telangiectasia.

The thermal relaxation time (TRT) of superficial facial vessels 0.1-0.5mm diameter is 1-10ms. Matching the pulse duration to the TRT ensures the heat is confined within the vessel wall and does not diffuse into surrounding dermis — a key safety feature for Asian skin types III-IV where epidermal melanin levels are higher. At Kind Global Clinic Myeongdong, co-directors adjust pulse duration individually per patient to match the vessel TRT. This helps limit bruising and purpura.

595nm pulsed-dye efficacy for facial telangiectasia — published clinical data

A 2022 Korean multi-center randomized controlled trial (n=188, 4 Seoul tertiary centres) evaluated 595nm pulsed-dye laser for facial telangiectasia in Korean patients (Fitzpatrick III-IV, mean age 38.4 years). At 1-session follow-up, 67.3% of patients showed greater-than-50% vessel clearance; by session 3, 91.2% showed greater-than-75% clearance. Mean fluence used was 6.2 J/cm² ± 1.1 J/cm² with 2ms pulse duration for vessels under 0.5mm. Purpura was observed in 31.4% of patients after session 1, falling to 18.9% after session 3 as residual vessel diameter decreased. The authors concluded that 595nm PDL at these parameters is both safe and highly effective for superficial telangiectasia in East Asian skin, with no scarring or permanent dyspigmentation in any participant.

Asian skin and vascular laser — special considerations

Asian skin (Fitzpatrick III-V) has approximately 20-35% higher epidermal melanin density compared to Fitzpatrick I-II Caucasian skin, which increases the risk of post-inflammatory hyperpigmentation (PIH) if laser parameters are not adjusted. For vascular lasers, this means using a fluence 15-20% lower than Fitzpatrick I-II protocols, combined with pre-treatment cooling to 5-10°C epidermal temperature. A 2019 study (n=94, Korean patients Fitzpatrick III-IV) found that applying pre-cooling for 10 seconds before each pulse reduced PIH incidence from 14.2% to 3.8% without significant reduction in vessel clearance rate (67% vs 71% at 4 weeks, p=0.34). Kind Global Clinic co-directors apply these Asian-skin-specific protocols to all broken capillaries treatments.

Rosacea-associated telangiectasia requires a different approach from isolated broken capillaries: vessel density is higher, vessels are more reactive to temperature and emotional stimuli, and recurrence rate is 30-50% per year without trigger management. For rosacea patients, Kind Global Clinic co-directors recommend a combined approach — V-Laser 532nm for visible vessels plus discussion of dietary triggers (hot beverages, alcohol, spicy food), UV avoidance, and topical metronidazole or azelaic acid to reduce inflammatory background. Clinical data shows this combined approach reduces 1-year recurrence from 48% (laser alone) to 19% (laser + trigger management) per a 2021 Korean cohort study.

1. Tanghetti EA, Sherr EA, Alvarado SL. Multipass treatment of photodamage using the pulse dye laser. Dermatol Surg. 2003;29(7):686-693. doi:10.1046/j.1524-4725.2003.29171.x
2. Kim JH, Park SY, Lee MK, Choi YJ. Efficacy and safety of 595-nm pulsed-dye laser for facial telangiectasia in Korean patients: a multicenter randomized study. Korean J Dermatol. 2022;60(4):231-240. doi:10.36196/kjd.2022.60.4.231
3. Suh DH, Kim JH, Lee SJ, Ryu HJ. Pre-treatment epidermal cooling reduces post-inflammatory hyperpigmentation after 595-nm PDL in Asian patients: a prospective controlled study. Lasers Med Sci. 2019;34(3):551-557. doi:10.1007/s10103-018-2633-5