As practitioners and engineers continue to refine both techniques and technologies, opinions vary regarding the most effective wavelengths for permanent hair reduction. “We have sorted out over the years that the alexandrite, ruby and YAG lasers can do a good job, but we can argue that the diode 810nm wavelength is the best,” says Corey S. Maas, MD, FACS, Maas ClinicTM, San Francisco. Read more