Photon permanent hair removal, such as in regular hospitals, by qualified doctors using qualified equipment, high safety. Photon technology is the use of extended selective photothermal effect principle, can precisely control the range of heat diffusion, the hair follicle can be completely “burned off”, and the surrounding skin and other structures, basically will not be damaged. Individual cases, due to local energy is too high, some patients can appear burns, this situation should be timely medical treatment, follow the doctor’s instructions for treatment. This kind of situation in the regular hospital experienced doctors rarely occur, while many irregular beauty salons or untrained operators often appear, so it is recommended to choose the regular medical institutions for consultation. Overall photon permanent hair removal side effects are small, but still need to be fully understood before treatment, as far as possible to avoid the following side effects: 1, pain: but usually only hair removal treatment process has a slight pain, the pain can disappear after the end of treatment. The severity of pain and hair density, thickness, color, as well as skin color and hair removal site and other factors are related. Coarser, darker, denser skin, treatment pain is obvious; limbs, chest and abdomen hair removal is generally less painful, face, hands and feet hair removal pain than other parts of the heavier; 2, redness and swelling, itching: some patients may also appear temporary redness of the skin, swelling and mild itching, redness and swelling subside in a few hours after the treatment, the skin returns to normal; 3, photon permanent hair removal is more suitable for light skin color hair deep crowd, while for the people with darker skin color, it may cause local pigmentation changes, such as pigment deepening and hypopigmentation due to the destruction of skin pigment, which is mostly temporary and can gradually recover by itself in 2-4 months.