Alexandrite laser technical data: emission wavelength - 755 nm; pulse repetition rate - 1-5 Hz; maximum effect on light skin, without tanning, dark hair; external cooling of the skin is required to avoid pain; a typical course of 6-10 treatments. Benefits: hair removal can be performed on light tanned skin; hair removal from any part of the body; extremely quick procedure. Disadvantages: does not remove light and grey hair; not effective on dark skin; patients often complain of severe pain; no sunbathing for 14 days before the session; Risks: if the settings are incorrect or the practitioner is unqualified, you may get burnt.   Diode laser technical data: emission wavelength - 755-1064 nm; pulse repetition rate - 1-10 Hz; maximum effect on all skin, including tanned skin; externally cooled skin; a typical course of 6-10 treatments; Benefits: used anywhere on the body; Removes light, red and dark hair. Disadvantages: does not remove only grey hair. Risks: even with incorrect device settings, the risk of burns is very low. If you have fair skin and dark hair, the Alexandrite laser is more suitable. If you have a dark complexion or a tan, the diode laser is better. The latter is better at removing light hair, but does not remove thin, downy hair. If you have sensitive skin and are afraid of burns or pain, prefer the diode laser.