It has multiple wavelengths of colored light and long wavelength laser, which can effectively stimulate the skin to regenerate collagen and effectively achieve the effect of skin rejuvenation. However, it also has certain hazards, as follows: 1, due to individual differences, so a few people may have some local side effects, such as pigmentation spots, acne-like rashes and blisters; 2, some people may have different degrees of discoloration, pigmentation or acne-like dermatitis due to improper treatment dose settings, such as wrong choice of equipment, mode and parameters, coupled with different personal sensitivity to colored light during treatment. The treatment of skin rejuvenation equipment is somewhat peeling, so there may be certain risks after surgery. Some patients may experience varying degrees of burning sensation, which may last 0.5-2 hours, while redness may last up to 12 hours. Patients with freckles may experience a transient slight darkening for up to a week after treatment, but this tends to fade away within a week. In addition, patients may also experience burning, hypopigmentation or depigmentation. In conclusion, it is recommended that patients go to a regular hospital and choose an experienced physician for the operation, so as to ensure the ideal results of skin rejuvenation.