Tear troughs are categorized into young, old and bags under the eyes, not all types of tear troughs can be solved by injecting fillers. Young tear troughs and old tear troughs can be improved by injecting fillers in a “filler” way. The difference between the two is that the younger tear troughs are mainly due to the ligaments being too tough by nature, causing the skin to be pulled and indented. In this case, the indentation is directly in the skin, and the amount of filler is very small and needs to be very precise, making it unsuitable for autologous fat fillers. Eye bags type tear trough needs to be first de-bagging surgery, for the situation to see whether the need to solve the problem of tear trough. Second, the elderly tear trough should be comprehensive treatment Candidates over 40 years of age, tear trough depression is obvious, accompanied by obvious skin laxity, often only fill the tear trough, and can not completely solve the problem, while the difficulty is also greater, at this time the need for comprehensive treatment, need to be combined with the facial lifting injections. Third, choose the right product If you choose hyaluronic acid to fill this part of the tear trough, you should choose the product with small cross-linking degree or small molecular weight. As the skin in this part of tear trough is thin, if you choose the product with large cross-linking degree or molecular weight, it will be easy to produce “lumps” or hardness to touch. Fourth, rather deep than shallow, rather less than more The tear trough is recommended to be injected into the deeper layers, injected into the periosteum. Deep injections have fewer entry points and lower bruising rates. If you don’t stick to the periosteum, it is easy to be moved by the orbital diaphragm fat, and if you hit the orbital diaphragm fat, it will be swollen, resulting in pseudo bags under the eyes. Redness and swelling are easy to occur if injected too much. If you must inject superficially, only inject a very small amount and massage evenly. Some doctors will find that if you hit the deep, how can not lift up the tear trough, will choose to hit the shallow flat laying up, although the early effect is very good, but it is very easy to have problems. Because playing shallow should not hit the dermis, should hit the fascia, but the tear trough skin is particularly thin, orbicularis oculi muscle and subcutaneous tissue is difficult to peel away, so the injection is very easy to hit the orbicularis oculi muscle, the formation of fibrous parcels, fibrous parcels and no blood transport, easy to get together into a ball. There is melanin in the superficial layer of the skin, if the injection is too shallow, it will make the melanin active, and there will be discoloration. If you inject too much, it is easy to form a hard knot. Remember not to inject into the following places: 1. Don’t touch the opening of the tear duct, where there are large blood vessels, such as bruises and hematomas will last for half a year, regardless of whether the injection is deep or shallow; 2. Avoid injecting into the orbital and orbicularis oris muscle because the rotation of the eyeball will drive the movement of the fat at the bottom of the orbital septum, which is easy to form a pseudo bags under the eyes. When injecting, you can let the customer’s eyes look upward, and at the same time take the fingers of the left hand against the orbital rim, in order to sense the position reached by the injected product at any time, and avoid injecting into the orbital area. Sixth, push injection slowly, while pushing injection and molding We must be slow when injecting injection, and need to push the drug while molding. Because the skin at the tear trough is thin, so that the filler can be evenly spread in the tear trough depression, in order to achieve the best results. Seven, preoperative ice and postoperative pressure is very important The tear trough is rich in blood vessels, it is easy to bruise, preoperative ice so that capillary contraction, can be a good prevention of bleeding. At the same time, you should press in time after injection, even if there is no bleeding, you should press immediately to prevent bruising for a few days after injection.