พลังงานเลเซอร์กำหนดเป้าหมายเมลานินในรากขนเพื่อยับยั้งการเจริญเติบโตของขนในอนาคต มาตรฐานสำหรับการลดขนถาวร
Laser hair removal uses laser energy specifically attracted to melanin in the hair follicle. Heat damages the follicle's growth structure, leading to permanent reduction in hair density over a series of treatments. Different lasers serve different skin types: alexandrite (755nm) for lighter skin and finer hair, diode (810nm) for medium skin, Nd:YAG (1064nm) for darker skin tones (Fitzpatrick V-VI) where alternative wavelengths risk burns.
Most patients require 6-10 sessions spaced 4-8 weeks apart for optimal hair reduction. Hair must be in active growth phase (anagen) to respond, which is why multiple spaced sessions are needed — at any moment, only a portion of hair is in anagen. Light hair (blonde, red, gray, white) does not respond well because there's insufficient melanin to absorb laser energy. Modern devices with appropriate cooling are well-tolerated; numbing cream is optional.
ผู้ที่มีขนสีเข้มที่ต้องการการลดขนระยะยาว
Recovery Time
Mild redness for hours; no downtime
Procedure Duration
15-45 minutes per session, depending on area; 6-10 sessions
Typical Cost Range
$150 – $1,500
🇺🇸 United States
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