Laser assisted hair-removal

S. Choudhary, M. L. Elsaie, K. Nouri

Research output: Contribution to journalReview articlepeer-review

5 Scopus citations

Abstract

A number of lasers and light devices are now available for the treatment of unwanted hair. The goal of laser hair removal is to damage stem cells in the bulge of the hair follicle by targeting melanin, the endogenous chromophore for laser and light devices utilized to remove hair. The competing chromophores in the skin and hair, oxyhemoglobin and water, have a decreased absorption between 690 nm and 1 000 nm, thus making this an ideal range for laser and light sources. Laser hair removal is achieved through follicular unit destruction based on selective photothermolysis. The principle of selective photothermolysis predicts that the thermal injury will be restricted to a given target if there is sufficient selective absorption of light and the pulse duration is shorter than the thermal relaxation time of the target. This review will focus on the mechanisms of laser assisted hair removal and provide an update on the newer technologies emerging in the field of lasers assisted hair removal.

Original languageEnglish (US)
Pages (from-to)595-602
Number of pages8
JournalGiornale Italiano di Dermatologia e Venereologia
Volume144
Issue number5
StatePublished - Oct 2009

Keywords

  • Hair removal, instrumentation
  • Lasers
  • Phototherapy

ASJC Scopus subject areas

  • Dermatology

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