The dangers of fractional laser include skin flushing, swelling, pain, and hyperpigmentation. Fractional laser is a special instrument that releases pulsed light, which can vaporize the epidermis and promote collagen regeneration and rearrangement in order to promote the recovery of cellular tissues and achieve the goals of lightening fine lines and pigmentation, reducing pores and improving skin tone. In addition, fractional laser also has certain hazards. After fractional laser, if some people do not pay attention to skin care, perhaps the skin will be infected with bacteria, resulting in flushing and swelling of the skin, which may be accompanied by certain pain. In addition, some people may retain pigmentation on the skin lesions due to improper post-treatment care or poor sun protection. If you need to take fractional laser, it is recommended to go to a regular hospital to consult a doctor to clarify the relevant matters and cooperate with the doctor to standardize the diagnosis and treatment and post-treatment care according to your personal situation.