Permanent Hair Reduction

Laser Hair Removal
레이저 제모

Medical-grade laser hair removal using selective photothermolysis — safe for Asian skin with Alexandrite, Nd:YAG, and Diode wavelength options.

Technology

How Laser Hair Removal Works

Selective Photothermolysis
Targeting the Hair Follicle, Not the Skin

Laser hair removal works on the principle of selective photothermolysis: the laser emits a specific wavelength of light that is absorbed preferentially by the melanin inside the hair shaft. The absorbed light energy converts to heat, traveling down the hair shaft to destroy the follicle's regenerative stem cells — without harming the surrounding skin.

The hair follicle must be in its active growth phase (anagen) for the laser to effectively disable it, which is why 6–8 sessions spaced 4–6 weeks apart are typically required to catch all follicles in the anagen cycle. Results are permanent for successfully treated follicles, though hormonal changes and new follicles can produce some regrowth over years.

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Alexandrite 755nm
Best for light-medium Asian skin with fine-to-medium hair; fast treatment, high efficacy
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Nd:YAG 1064nm
Deep penetration, safe for darker Asian skin (Fitzpatrick IV–VI) and coarse hair
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Diode 808nm (Soprano / LightSheer)
SHR "sliding" mode with sapphire cooling — virtually painless, comfortable for large areas
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6–8 Sessions
4–6 weeks apart; annual top-up maintenance optional
Devices

Popular Devices in Korean Clinics

Korean dermatology clinics typically use one or more of these FDA-cleared platforms: Candela GentleMax Pro (755nm + 1064nm dual wavelength), Cutera Excel HR (755nm + 1064nm), Alma Soprano Ice / Titanium (810nm diode with sliding motion), Lumenis LightSheer Desire (805nm diode), and Deka Synchro Replay (755nm + 1064nm). Dual-wavelength Alexandrite + Nd:YAG systems are preferred for their ability to customize wavelength to skin tone and hair type in real time.

Some budget clinics use IPL (Intense Pulsed Light) devices which are not true lasers and generally require more sessions for similar results. For permanent hair reduction, always confirm the clinic uses a medical-grade laser (not IPL) and check whether single or dual wavelength.

Common Zones
  • ✓Underarms (겨드랑이)
  • ✓Bikini line (비키니)
  • ✓Brazilian
  • ✓Full legs / lower legs
  • ✓Arms (forearm / full)
  • ✓Upper lip & chin (face)
  • ✓Chest & abdomen
  • ✓Back & shoulders
  • ✓Fingers & toes
Price Range₩30,000 – ₩500,000 / area / session
Sessions6–8 sessions, 4–6 weeks apart
Pricing per body area; packages of 5–10 sessions discounted
Procedure

Treatment Process

1
Consultation
Fitzpatrick skin type assessment; hair must be 1–2mm (shaved 24 hrs prior)
2
Preparation
Protective eyewear; cooling gel if required by device
3
Laser Pass
Doctor selects wavelength and fluence; sensation like hot rubber band snap
4
Cooling
Ice pack or soothing gel for 5–10 minutes
5
Aftercare
SPF mandatory; no sun exposure, hot baths, or waxing for 48 hrs
FAQ

Common Questions

6–8 sessions at 4–6 week intervals for most body areas, then optional yearly top-up. More sessions may be needed for facial hair (hormonal), PCOS patients, or if hair is very light.
Yes — 1064nm Nd:YAG is specifically designed for Fitzpatrick IV–VI skin. Diode (808nm) with contact cooling is also safe. Avoid 755nm Alexandrite if you have dark or recently tanned skin, as it can cause hyperpigmentation.
Traditional Alexandrite and Nd:YAG feel like hot rubber-band snaps. Diode SHR mode (Soprano, Titanium) is significantly more comfortable — described as warm sensation. Topical numbing is available but usually not necessary.
No — active tan dramatically increases burn risk. Wait 4 weeks after sun exposure. 1064nm Nd:YAG is the safest option for recently tanned skin but should still be delayed until the tan fades.
Hair in follicles successfully destroyed during the anagen phase does not grow back. However, hormonal changes (pregnancy, menopause, PCOS) can activate dormant follicles over years. Occasional maintenance sessions (1–2 per year) typically preserve results long-term.
Limited efficacy. Laser targets melanin, which is absent or reduced in light hair. Electrolysis is the only proven permanent option for non-pigmented hair.
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