Permanent Hair Reduction

Laser Hair removal and permanent hair reduction.

Lasers and noncoherent light sources have recently been introduced to induce selective damage to hair follicles. The mechanisms by which these systems induce selective damage to hair follicles are based on the principles of selective photothermolysis. This principle predicts that selective thermal damage of a pigmented target structure will result when sufficient fluence at a wavelength, preferentially absorbed by the target, is delivered during a time equal to or less than the thermal relaxation time of the target.

Laser-Assisted Hair Removal

Author: Nili N Alai, MD, FAAD, Assistant Clinical Professor, Department of Dermatology, Clinical Faculty and Preceptor, Department of Family Practice, University of California, Irvine; Clinical Faculty and Preceptor, Department of Family Practice Residency Training, Downey Medical Center; Medical Director, The Skin Center at Laguna; Expert Medical Reviewer, Medical Board of California
Coauthor(s): Arash Michael Saemi, BS, University of Vermont College of Medicine; Jennifer M Ang, BA, University of California Irvine, School of Medicine