Everyone's masseter muscle condition is different, and the injection dose is different. Before the operation, the doctor will conduct a face-to-face consultation to determine the appropriate dose through observation and touch. Generally, the masseter muscle is of medium size, and the unilateral dosage is 15-40 units. Some girls' masseter muscles are particularly developed and need to increase the dose. If you don't feel enough, you can call again at regular intervals. It is always safe to inject several times. Generally, it is necessary to inject face-lifting needles for more than three times, so that the muscles will be in a relatively stable state and the growth rate of masseter muscles will not be so fast. So how many milliliters exactly depends on your personal situation ~