It is said that “the eyes are the windows to the soul”, and the eyes play a pivotal role in the overall beauty of the face. However, even the most beautiful eyes can be dulled by the appearance of tear troughs, so there is a growing demand for tear trough injections. However, the tear trough is a difficult area to master compared to other parts of the face, and it is also one of the areas most prone to complications. Therefore, how can I avoid complications when performing tear trough injections? What injection techniques do you need to master in order to completely solve the tear trough injection problem? Tips for tear trough injections: Tip 1: Remove tear troughs by targeting their causes Tear troughs are classified as young, old and baggy, and not all types of tear troughs can be solved with filler injections. Not all types of tear troughs can be solved with filler injections. Younger tear troughs and older tear troughs can be improved by “filling in” with filler injections. The difference between these two types of tear troughs is that they are mainly due to the natural toughness of the ligaments, resulting in the skin being stretched and forming depressions, which are located directly on the skin and require a small amount of filler, requiring great precision and not suitable for filling with autologous fat. Tear troughs of eye bag type then need to undergo eye bag removal surgery first to see if the tear trough needs to be solved for the situation. Tip 2: Tear troughs in older people should be treated comprehensively. For candidates over 40 years old, tear trough depressions are obvious and accompanied by obvious skin laxity, often filling only the tear troughs does not completely solve the problem and is more difficult at the same time. Tips 3: Choose the right product For tear trough injection, if you choose hyaluronic acid for filling, you should choose a product with small cross-linkage or small molecular weight. As the skin in this area of the tear trough is thin, if you choose a product with a large cross-linkage or molecular weight, it will be easy to produce a “lump” or hard to touch. It is recommended to use the child skin needle, the child skin needle is pure liquid growth peptide, using the smallest needle, easy to push the needle, easy to grasp the foot, the growth is also softer, more natural. Tip 4: Better deep than shallow, better less than more Tear trough is recommended to be injected to the deep layer, injected to the periosteum. Deeper injections have fewer needle points and lower bruising rates. If you do not play against the periosteum, it is easy to be carried by the orbital diaphragm fat to move and hit the orbital diaphragm fat, it will expand a lot, causing pseudo-eye bags. If the injection is too much, redness and swelling will easily occur. If you must inject superficially, you can only inject a very small amount and massage evenly. Some doctors will find how the tear trough can’t be lifted up if playing deep, and will choose to play shallow flat to lay up, although the early effect is very good, but it is easy to have problems. However, the skin of the tear trough is particularly thin and the orbicularis oculi and subcutaneous tissues are difficult to peel off, so it is easy to hit the orbicularis oculi when injecting, forming a fiber package, and the fiber package has no blood flow, so it is easy to gather into a ball. There is melanin in the superficial layer of the skin, so if the injection is too shallow, the melanin will be active and pigmentation will occur. If the injection is too much, it is easy to form hard knots. Tips 5: Remember not to inject into the following places 1, the tear duct opening should never be touched, there are large blood vessels here, such as bruising and hematoma will last for six months, regardless of whether the injection is deep or shallow; 2, avoid injecting into the orbit and orbicularis muscle, because the rotation of the eye will drive the movement of the fat at the bottom of the orbital septum, so it is easy to form pseudo-eye bags. When injecting, you can ask the client to look upward, while holding the fingers of the left hand against the orbital rim, in order to always sense the location where the pushed product reaches, and avoid injecting into the orbit. Technique 6: Slow injection, shaping while pushing injection We must be slow when injecting, and need to push the drug while shaping. This is because the skin in the tear trough is thin, so that the filler can be evenly spread on the depression of the tear trough to achieve the best effect. Tip 7: Pre-operative ice and post-operative pressure are important. The tear trough is rich in blood vessels and is prone to bruising, so pre-operative ice makes the capillaries constrict and can prevent bleeding. At the same time, pressure should be applied immediately after the injection, even if there is no bleeding, to prevent bruising a few days after the injection.