Needle-free hydrophoresis is an electrotherapy deep introduction technology, using hydroelectrophoresis and water channel protein technology to introduce various active ingredients into the mesoderm, and supplemented by muscle toning and lymphatic drainage, to promote human lymphatic circulation and blood circulation, so as to achieve wrinkle reduction, spot whitening, promote collagen production, lipolysis and weight loss and other cosmetic effects. However, if you do not pay attention to the operation norms and procedures, the following risks may arise: 1, skin sensitivity and fragility: in the treatment process, patients can show continuous facial redness, full of red blood, local skin sensitivity, fragility and other symptoms; 2, skin hyperplasia: the growth factor in the composite hydrophoresis needle proliferation effect is not controllable, if the skin hyperplasia, you need to promptly seek medical treatment; 3, skin damage: in the needle-free hydrophoresis treatment process, the skin may be over-stretched, the skin surface keratinocytes under the action of high-speed airflow, sometimes slight damage; 4, serious cases of scar hyperplasia, pigmentation, skin dry instead. Therefore, after the patient has undergone treatment, he should avoid prolonged sunlight exposure, avoid being in a hot environment, also avoid strenuous exercise, eat more fruits and vegetables, drink more water to fully hydrate the skin, and it is recommended to use medical beauty mask to promote skin recovery.