Photon hair removal side effects are less, in a few cases can cause local skin thermal burns, hyperpigmentation or infection, scarring and other adverse consequences. Photon hair removal adopts the principle of selective photothermolysis of intense pulsed light source, utilizing the absorption of specific wavelengths of light by melanin cells in the hair follicle to generate heat in the hair follicle, thus selectively destroying the hair follicle, and achieving the effect of removing the hair while avoiding damage to the surrounding tissues. In the laser treatment process, if the energy is too high or improperly operated, a large amount of thermal energy will be accumulated in a short period of time and produce thermal damage to the local tissues, which is commonly seen in the clinic as redness, swelling, blisters, etc. Ice packs can be applied immediately after the laser treatment in order to reduce the probability of such a situation occurring. Photon hair removal will act on the skin melanin particles, accelerate its metabolism. However, if the care after laser treatment is not good, such as sun exposure or mechanical friction, etc., because the skin barrier function has not been fully restored, it is more likely to leave pigmentation. Poor local care after photon therapy, easy to appear folliculitis, thermal burn wound infection, etc., the infection is more serious or improper treatment is likely to leave serious pigmentation and scarring. If any of the above discomfort occurs, it is recommended that the patient go to a regular medical institution in time to avoid adverse consequences.