Hydrographic injection is for different personal constitution and configuration of the injection, but not the more varieties of drugs the better the effect, the individual constitution of the targeted configuration to achieve the best results. So after the injection of water light needle, what postoperative complications may occur? How to treat it? 1, surface infection Mainly related to aseptic operation, mostly facial disinfection is not complete; can also be secondary to allergic reactions; patients with improper care in the early postoperative period, such as contact with – some cosmetic powder or rain, etc., the pathogenic bacteria can be from the needle holes into the secondary infection. Manifestation: Generally, there are large redness, swelling and fever at the injection site, accompanied by pain, and blisters or oozing may appear in serious cases. Due to the relatively shallow level of injection, the infection is mostly confined to the surface, and it is not easy to develop into a systemic infection. Treatment: surface disinfection, antibacterial gauze wet compresses; intramuscular or intravenous dexamethasone injection to reduce rejection and exudation; if necessary, systemic anti-infective treatment can be infused; thermal physiotherapy to promote blood circulation; after healing, early hyperpigmentation may occur, and it will disappear on its own after a few months. 2, acne-like eruption Hydrographic needles into the skin in the process of subcutaneous acne is opened, sebaceous gland secretions and other debris with the needle hole channel discharge caused by the skin can be seen as a detoxification process, is not bad. This reaction can also occur after fruit acid and laser treatment. Performance: a number of patients 5 to 7 days after the injection, the appearance of facial acne-like pimples, serious cases will appear acne-like pustules. Doctors add a small amount of botulinum toxin during the introduction of hydrafacial injection, which can inhibit the secretion of sebaceous glands; for patients with active acne, it is recommended to treat acne first if it is more serious. Treatment: generally only need to pick through the acne, clean out the secretion, topical use of some antibiotic ointment, facial wet compresses hydration, about 2 weeks can be restored. 3, intensive syndrome Hydrographic injection immediately or 2 ~ 3 days later, there is a large area, regular distribution, centered on the eyes of the dermatome like small protuberances, no redness, swelling, heat, pain, swelling and other infections, touch softer, known as the “intensive syndrome”. This symptom is generally caused by the operator’s misuse of large particles, high cross-linking hyaluronic acid products, especially the more absorbent single-phase cross-linking products; injection level is too shallow; improper adjustment of the instrument parameters, single-point injection dose is too much; and the patient’s sensitivity to the body. Performance: If the intensive syndrome is caused by too shallow injection of small particles of non-crosslinked or low-crosslinked hyaluronic acid or too much single-point injection, the symptoms can be found on the spot after the operation, which is only covered by redness, swelling and bleeding, and it is generally difficult to draw attention to it, and then the swelling will gradually subside and the symptoms will become more obvious after 2-3 days, and the symptoms will be relieved if no treatment is done, and the symptoms will be spreading gradually and relieved after 1-2 weeks; and the complete subsidence may take 2-3 months. It may take 2 to 3 months for the symptoms to subside completely. There are also some small molecule low cross-linking hyaluronic acid products that can appear temporary intensive syndrome phenomenon after normal injection, which can be relieved by itself after a few days, and it is also possible to use some physical therapy equipment to assist in the treatment. The maintenance time of its effect is much longer than that of non-crosslinked hyaluronic acid. If it is a large molecule high cross-linking products, after injection, there are symptoms on the spot, may not have abnormalities on the spot, about three days after the symptoms began to appear, and gradually aggravate the symptoms, 10 to 14 days to stabilize the symptoms, in fact, this is only hyaluronic acid in the body to lock the process of water. Response: Observe for a few days to see whether there is a trend of self-improvement; try to treat conservatively, hot compresses and physiotherapy can greatly accelerate the absorption of hyaluronic acid, and radio frequency laser can be used to assist in the treatment if necessary; if the symptoms are caused by injection of large molecules of hyaluronic acid with high cross-linking, you can choose a few points to try a small amount of injection of a small amount of dissolving enzyme and observe for a few days, and if there is a noticeable effect, and then a small amount of injection of dissolving enzyme as the principle of many times! The whole face can be injected 3-5 times, do not inject too much at one time. 4, hyperpigmentation water injection can make the dull skin vibrant, white and smooth, if you add a small amount of spot removal ingredients, can indeed play a lightening effect on the spot, but some patients may have hyperpigmentation. Performance: Some patients with sensitive body or hidden pigmentation spots may have hyperpigmentation or aggravation of the original pigmentation at the pinhole, and the original pigmentation will be aggravated instead while the overall skin becomes white and tender. Response: It is recommended to stop the water light needle treatment program and change to other methods of treatment such as laser. The new skin after surgery is extremely delicate and susceptible to ultraviolet rays and hyperpigmentation, so it is important to pay attention to sun protection after surgery. There are also some hyperpigmentation secondary to infection, which is related to the lack of strict aseptic operation, and can be gradually faded after a few months.