Hydrafacial is a beauty product that uses a needle to inject the original hydrafacial solution into the skin, which adds moisture to the skin and thus acts as a moisturizer and water locker. Usually, after a period of time, the skin becomes full, delicate and hydrated after the injection of hydration injection. The main component of hydration injection is hyaluronic acid, which is not maintained in the body for a long time, and will be metabolized completely by the body in about half a year, so it needs to be injected continuously. Multiple injections may produce certain side effects, as follows: 1, bleeding or petechiae after the injection of hydrating needles, the degree of each person is different, the recovery time is different; 2, individuals will appear acne-like rash about 1 week after injection: hydrating needles will stimulate the body’s tissue hyperplasia, hyperplasia effect is not controllable, even if only hyaluronic acid hydrating needles, into the human tissue will cause tissue hyperplasia, may lead to Acne-like rash; 3, facial unevenness: due to the technical problems of hydrophobic needles, as well as the applicant’s own body cell regeneration of nutrient deficiencies and collagen regeneration chaos, resulting in post-operative repair out of control, and collapse, irregular proliferation and a serious lack of nutrients in some cells, can lead to cortical necrosis and produce skin unevenness; 4, facial expression stiffness: due to the operation is not standardized, in the process of surgery touched the facial nerve This leads to numbness and stiffness of facial muscles. Therefore, it is recommended that candidates should choose a professional hospital and experienced doctors to minimize the side effects.