How Long Can the Hair Be for Laser Treatment?

Laser hair removal must be done on shaved skin (contrary to popular belief, studies have shown that shaving does not produce thicker and darker hair) so that the hair is not more than a mm. or few above the epidermis, otherwise the longer hairs would rest against the skin as the laser handpiece is applied to the skin surface, and the hair shaft would abosrb the energy transmitting heat to the surface of the skin. This would increase the risk of skin color changes and even a blister or burn. Waxing or plucking should not be done shortly before the treatment as this would remove the hair bulb, or target of laser energy absorption. As the hairs regrow and reach the surface, you can retreat.

Die optimale Länge von Haaren für die Laserepilation ist 1-2 mm. Eine Rasur sollte ca. 2 Tage vor der Behandlung erfolgen. 

The optimal hair length for laser hair removal is 1-2 mm.  The hair should be shaved 2 days before the treatment.

Laser Hair Reduction is performed on shaved skin.

I ask our patients to shave the night before their appointment for best comfort. Longer hair, visible above the skin surface, runs the risk of of being burnt unto the skin during treatment when the laser is applied. This can lead to skin injury.