We feature the LightSheer Duet, this is the newest and most innovative Laser Hair Removal system. The Duet is a Diode Laser with two different hand pieces. The ET is a 9 mm spot size, offers Cool-tip technology and is used to treat smaller areas. The HS Handpiece is 22 x 35 mm, featurs vacuum assist technology and is used to treat larger areas with more comfort and less time. How it works: The Light Sheer Duet Laser uses a process called Selective Photothermalysis or target destruction. This involves raising the temperature of the target high enough to damage the viable hair cells without damaging the epidermis and the surrounding tissues. Following follicular destruction, the debris of these cells will shed out and will fill with dermal fibers after approximately 1 month. Because each individual hair cell on the body can be found in a different stage of growth (anagen, catagen, or telogen), the process of permanent hair reduction can take between 4 to 8 treatments spread out over 4 to 6 weeks between each treatment.