Needle-free water light adopts atomized water light injection gun, using negative pressure attraction shallow guide, deep guide technology, in the dermis deep under the fixed point, positioning, fixed layer, quantitative injection of nutrient solution, without destroying the epidermis of the skin, so that the active ingredients of nutrient solution effectively penetrate into the skin, can achieve whitening and rejuvenation, skin tightening, deep hydration, lighten wrinkles and other effects. In the regular hospital under the operation of professional physicians, generally will not produce harm. Needle-free hydration injections are made by forcibly squeezing the skin to inject nutrients through high-speed, high-pressure airflow. In this process, the skin will be overstretched, and the keratinocytes on the skin surface will be slightly damaged by the high-speed airflow. Therefore, do not be exposed to the sun for a long time after the hydrophobic treatment, do not go to a hot environment, do not exercise strenuously, eat more fruits and vegetables, and drink more water. Also give adequate hydration to the skin and recommend the use of a medical aesthetic mask to promote skin recovery. Hydrafacial is an invasive treatment, which is a medical practice, and must be evaluated by a professional doctor to determine whether you can do this procedure and what formula should be used to have a significant therapeutic effect. In addition, when undergoing hydrafacial treatment, candidates need to pay attention to avoid pregnancy, breastfeeding and menstruation, and patients with a history of allergy to hyaluronic acid should not undergo hydrafacial injections.