Medical Nd-YAG lasers are laser devices used for a variety of medical procedures. They use a neodymium-doped yttrium aluminum garnet crystal as the active medium and emit light in the near-infrared range. Nd-YAG lasers can be used for dermatology procedures such as hair removal, wrinkle and scar reduction, as well as treating vascular lesions such as varicose veins and telangiectasia. They are also used in surgery to cut and coagulate tissues. Medical Nd-YAG lasers are considered safe and effective when used by qualified healthcare professionals, and their use is regulated by government authorities to ensure patient safety.