Shoulder fine needle injection will not take effect immediately, usually after one week, and the shoulder will become thinner in about one month. The thin shoulder needle acts for one week, because the needle is injected into the target muscle, and there is a process of relaxing muscle paralysis. If the target muscle (trapezius muscle) is developed, the action time will be later. Because professional doctors have a more accurate grasp of the dose of thin shoulder needle, this can better ensure the effect of thin shoulder needle and avoid the side effects caused by excessive injection. If the trapezius muscle is particularly developed, it may be slower. One week after operation, you should be careful not to eat irritating food and aspirin-containing drugs. Can't do some shoulder exercises. If you want to gain more authoritative knowledge of medical beauty, you need lemon to love beauty.