Collagen filler apple muscle, collagen is injected into the area of apple muscle, which can make the flat or atrophied apple muscle become full, make the face more three-dimensional and childlike, and increase the sense of youth. After collagen filling the apple muscle, unnatural smile; excessive facial bulge and uneven surface; deepening of tear trough and nasolabial folds and other complications may occur, so it is recommended that patients should choose regular plastic surgery organizations to seek medical treatment. In addition, collagen injection in the apple muscle may also cause the following complications: 1, redness and swelling of the injection site: a small number of patients in the collagen filling of the apple muscle, there will be localized redness and swelling, about 1-2 days will disappear on their own; 2, localized bruising: the doctor in the injection process, if the needle accidentally touches the capillaries, then it is easy to appear in the subcutaneous bruising, most patients will disappear within half a month; 3, localized bruising: doctors in the injection process, if accidental needle touching capillary, then it is easy to appear subcutaneous bruising, most patients will be Disappear within half a month; 3, the injection amount of excess: the injection process of the doctor on the injection amount did not pinpoint accurate, when the injection of serious overdose, the need for injection to remove, remove the difficulty is relatively large; 4, the local infection: such as the operation is not strict or postoperative care is not appropriate, it will lead to redness, swelling and other infected phenomena on the face. Once the infection occurs, it is necessary to go to the hospital in time for follow-up in order to deal with it as soon as possible; 5, allergic reaction: collagen injection must be carried out before the skin allergy test, the test positive people are prohibited from injection. Even for those with negative skin test, there may still be allergic symptoms such as edema, nodules, pressure, itching and erythema, and in severe cases, anaphylactic shock may occur.