Whether it is once every three months or once a month depends mainly on how far a person's skin can be repaired. Repair quickly, of course, once a month is enough. Besides, you are young, and your metabolism is better in a new city, so you should repair it quickly. If laser is used, it can be repaired with growth factor after laser is finished, which will be better and faster. If you want to whiten, whitening needle has a good effect and obvious effect.