Laser beauty is a icing on the cake beauty project, so it requires high safety. But now many beauty salons also provide such services. From the point of view of safety, it is recommended to go to a regular cosmetic and plastic surgery hospital or a large hospital dermatology treatment. Taking photon rejuvenation as an example, many people think that photons are non-invasive and safe, but from the perspective of professional doctors, this is not the case. The effect of photon rejuvenation is closely related to the experience of equipment and doctors. The price of photon rejuvenation instrument in the market ranges from tens of thousands to hundreds of thousands, the difference lies in different photon energy and different equipment stability. If the intensity of intense pulsed light is unstable, it is easy to burn the skin at the peak of light. Secondly, the parameter setting of equipment is also very important. For the sake of safety, some people set the parameters very low and it is difficult to have an effect. Of course, optimization is both safe and effective. Laser cosmetology varies from person to person, which is related to the patient's skin color, past medical history and major skin problems that need to be improved. These all need experienced doctors to judge.