The laser hair removal device only works on the hair follicles and has no effect on the skin and other organ systems. The principle of conventional laser hair removal is through selective photo-thermal action, after the laser is emitted, it passes through the skin and acts directly on the deep hair follicles, thus making the hair follicles inactive and thus no longer growing hair, which basically has no effect on the skin and other organs. Of course, not all lasers are the same, if it is an informal hospital or other treatment institutions, in the selection and configuration of the machine is not reasonable, or the laser doctor hair removal experience is not enough, in the machine parameter settings are not standard, may have a certain impact on the skin, but usually there is no significant side effects on other organs of the body. So the laser hair removal device is relatively safe, as long as the machine is chosen reasonably and the treatment parameters are chosen correctly, there are usually no adverse hazards.