Some doctors may find some problems after nasolabial folds injections, such as the nasolabial folds are not filled up even though a lot of injections have been done? After the nasolabial folds are injected, the nasolabial folds are aggravated instead? Do you find that the nasolabial folds are hard and the smile is unnatural after the injection? What are the reasons for these problems? Not all nasolabial folds are treated by injecting fillers. For those who have problems with bone development in the middle of the face, filling by injection is only an improvement, not a treatment or a complete solution. There are three main reasons for the formation of nasolabial folds: ① aging: the skin itself ages, thins, lacks elastic fibers, and is stretched due to gravity, which belongs to the facial aging type of nasolabial folds; ② fat accumulation on the outer top: the difference between the tissue structure of the outer top and inner bottom of the nasolabial folds, the outer top tissue is fat and loose, and the inner bottom is dense, which belongs to the depressed type of nasolabial folds; ③ muscle strength: the long-term repeated movement of the expression muscle, lifting The repeated movement of upper lip nasal muscles, nasolabial folds act as the fulcrum of power arm and resistance arm, this type of nasolabial folds belongs to muscle type nasolabial folds. The reasons for the formation of nasolabial folds are different, and the treatment methods will be different. 1, for depressed and aging nasolabial folds, injectable fillers are applicable to solve the problem; 2, for muscular nasolabial folds, a combination of Botox injections is needed; 3, if necessary, depending on the condition of the nasolabial folds depressions, the combination of the two can be used to fill the depressions while reducing the muscle activity in the corresponding area. Second, nasolabial folds injection techniques 1, multi-level injection to avoid a single level of injection. Multi-level injection, mainly in the deep layer (subcutaneous layer), shallow layer (dermis) injection as little as possible as evenly as possible. Generally inject the superficial layer first and then inject the deep layer, inject the superficial layer first to fill up the skin volume, inject the deep layer and then fill up the tissue volume. 2.To carry out comprehensive treatment for aging type nasolabial folds, it is not possible to improve the laxity of the whole face by doing nasolabial folds alone. It is also necessary to consider whether the midface, temporal area, cheeks, etc. also need to be treated in a comprehensive manner. When comprehensive treatment is performed, generally the nasolabial folds are evaluated in a very backward order in the face, such as the nasolabial folds can also be improved after the midface is improved, and finally only a little amount is needed to solve the nasolabial folds. When injecting the dermis, because the injection is linear, it must be kneaded, and when you press it, you can go into the mouth with a gauze pad to press it, which is a very important step of hyaluronic acid injection. 4, injection of nasolabial folds must not be played to the cheek area If you play to the cheek area, the nasolabial folds will be deeper and deeper, so try to inject close to the inner side of the nasolabial folds when injecting. 5.Precise judgment before injecting nasolabial folds The nasolabial folds are subject to gravity, so precise judgment of the location of the nasolabial folds is needed when injecting. Precautions after injection 1. The injection site should be kept in a static state for three days after injection, with slight pressure, but no massage; at the same time, frequent movements of facial muscles such as laughing and crying should be avoided to keep the injection evenly distributed in the injection site. 2, wrinkle remover should do facial massage after washing the face in the morning and evening after the effect is shown, and do facial care maintenance regularly to strengthen the passive activity of facial muscles. 3, keep the injection site clean and dry. Do not use cosmetics on the whole face for 24 hours after injection, and do not get wet or polluted. Do not apply topical medications and cosmetics, as well as other irritating items to the injection site and the area around the injection within 72 hours after the injection. 4. Do not drink alcohol and eat irritating food for one week after injection. (e.g. alcohol, chili pepper) 5.If there is a normal discomfort reaction, please consult with the doctor who injects wrinkle removal in time. Finally, we remind you that you must go to regular medical beauty institutions to inject wrinkle removal.