When speaking of laser hair removal, there are basically only two kinds. Both types employ heat that is generated by a high intensity light source. First, is the IPL or Intense Pulsed light model. It uses a xenon tube to generate high intensity light. Then there are the actual lasers that use diode laser light emissions to generate the light. Both styles are referred to as laser because they use light as their energy source. They perform the same function of using light to generate heat that is repeatedly applied to the hair follicle. The repeated heating disables the follicle resulting in permanent hair removal. . . . → Read More: The Good and The Bad About Laser Hair Removal