The main side effect of microneedle cosmetology is infection, such as unqualified disinfection of surgical instruments and lax aseptic operation, which may cause infection. In addition, if the composition of beauty products injected into the skin through microneedles is unknown, there may be risks such as infection and abscess. After treatment, it is common that the skin appears local inflammatory reaction, such as redness and burning sensation, which generally lasts for 3- 14 days.