Generally epidermal numbing agents are used in medical aesthetics for injections, lasers, and tattoos. Epidermal numbing agents are used on the skin, usually by applying a thick layer of cream to the surface of the skin and waiting about 30 minutes for the next step to be performed. Local reactions may occur with the use of epidermal numbing agents, with pallor, erythema (redness) and edema being more common, but will gradually subside with time. A burning or itching sensation may also occur at the beginning of application, and a very small number of patients may experience an allergic reaction. In addition, epidermal anesthetics are prescription drugs and need to be used under the guidance of a doctor. Moreover, embroidery also belongs to the medical field and requires a professional and qualified doctor to perform the relevant operations, so when performing embroidery, you must go to a regular plastic surgery hospital or institution to guarantee the results and safety.