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Laser hair removal.

Molly Wanner1

  • 1Department of Dermatology, College of Physicians and Surgeons, Columbia University, 161 Fort Washington, New York, NY 10032, USA. maw44@columbia.edu

Dermatologic Therapy
|October 19, 2005
PubMed
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Numerous advances in laser hair removal utilize melanin. While effective for light skin, the long-pulsed Nd:YAG laser is safest for dark skin, with other options under investigation for light hair.

Area of Science:

  • Dermatology
  • Aesthetic Medicine
  • Laser Technology

Background:

  • Melanin-targeting laser hair removal has advanced significantly since 1996.
  • Current devices are effective for light skin types (I-III), achieving ~75% hair reduction.

Purpose of the Study:

  • To review the advancements and current landscape of laser hair removal technologies.
  • To highlight device suitability across different skin phototypes and hair colors.

Main Methods:

  • Review of commonly used laser and light-based hair removal devices.
  • Discussion of wavelength-specific efficacy and safety profiles.
  • Exploration of emerging technologies for challenging cases.

Main Results:

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  • Ruby (694 nm), alexandrite (755 nm), diode (810 nm) lasers, and intense pulsed light (IPL) are standard for light skin.
  • Long-pulsed Nd:YAG (1064 nm) laser is the safest option for dark skin phototypes.
  • Diode, alexandrite lasers, and IPL can also be used cautiously in darker skin.
  • Combination radiofrequency and optical devices, and photodynamic therapy are being investigated for light hair treatment.

    • Conclusions:

    • Laser hair removal technology has evolved, offering effective solutions for various skin types.
    • Wavelength selection is crucial for optimizing safety and efficacy, particularly in darker skin.
    • Ongoing research explores novel methods for treating lighter hair colors, expanding treatment possibilities.