Laser eyebrow hair removal is usually not harmful, but if the operation or post-treatment care is not appropriate, it may cause skin infection, pigmentation abnormalities, scarring and other hazards. 1. Skin infection: laser hair removal process if the laser energy selection is too aggressive, or treatment is not timely enough after the ice and other improper care, may lead to local damage, folliculitis and other symptoms of infection; at this time, can be used externally with fusidic acid and other topical antibiotic treatment. 2. pigment abnormalities: laser eyebrow hair removal repair process if improper care, such as failure to remove scabs, healing process of infection, etc., may lead to inflammatory pigmentation or loss of pigmentation; at this time can be combined with fractional laser and other photoelectric treatment to improve. 3. Scar: During the process of laser eyebrow hair removal, the dermis may be damaged or infected, which may result in local skin scarring; generally, after the scar is stabilized in 3-6 months, appropriate improvement measures can be chosen according to the scar and the patient’s wish. If laser eyebrow hair removal is operated in a stable manner and properly taken care of, the above mentioned side effects will not occur. If the above mentioned situation occurs, it is recommended that the patient go to a regular medical institution immediately, so as not to lead to adverse consequences.