The frequency of whitening injection is generally once a week, and 12 times is a course of treatment. If the effect of quick whitening is pursued, it can also be injected continuously once a day, 12 days. In the case of menstrual surgery, due to the specific physiological reasons of women, the surgical wound may bleed more than usual, which is more likely to cause hematoma, and the postoperative recovery period will be prolonged. Therefore, it is best to avoid injecting whitening needles during menstruation.

Other precautions before operation of whitening needle

1, laser, peeling and fruit acid skin changing cannot be performed within one week before whitening injection;

2. Avoid strong light or sunbathing one month before whitening;

3. People with multiple inflamed or suppurative wounds should treat the disease first, and then apply whitening needle;

4. Pregnant women and people taking special drugs need to postpone the execution;

People who are sensitive to light and have abnormal immune system need to communicate with experts in advance.