The main side effects of hydrafacial injections are pain, bruising, infection, allergies and hyperpigmentation. Hydrafacial injection is the use of negative pressure needle, the required different effects of cosmetic injections into the dermis immediately below the epidermis, after the injection can make the skin become moisturized, bright, and therefore called “hydrafacial injection”. 1. Pain: after playing the water light injection patients face will generally have a mild stinging sensation, patients can generally tolerate, no special treatment, 24 hours later will be better. 2. Bruising: after treatment, some of the injection points around the local bruising, purple patches and other phenomena, for a small range of subcutaneous bleeding, especially in the eyes, periorbital and other blood-rich parts. Because of the invasive operation of hydrafacial injection, this situation is inevitable, avoid menstruation, avoid consuming anticoagulant drugs and so on can be prevented. This situation generally does not need to be dealt with, more than 48 hours after the injection of their own warm wet compresses, if necessary, seek medical help. 3. Infection: If the injection is not properly cared for, such as premature exposure to water, it is easy to operate in the area of redness, swelling, heat, pain and other symptoms of inflammation, if you fail to timely and correctly deal with the further development of facial redness, swelling and even ulceration, pus secretion phenomenon, you need to go to the hospital in time to deal with the problem. 4. Allergy: some patients will be allergic to the injection phenomenon, once the allergy needs to be terminated immediately, the doctor will be ice packs, anti-allergy drugs and other treatments. 5. Hyperpigmentation: after treatment, there are 3-7 days recovery period, during which you need to strictly follow the doctor’s instructions for care, after the recovery period should also be strictly sunscreen, otherwise it is very easy to easily appear facial hyperpigmentation. Patients with the need to play water light injection is recommended to regular medical institutions, after treatment, strictly comply with medical advice care, to avoid leading to serious consequences.