If you must do it, first see if your skin is mottled, which is certainly not good. Otherwise, pay attention to postoperative infection. Penis belongs to skin mucosa, which is more susceptible to infection in wet places. The best way is to prevent, take a full rest a few days before the operation and enhance immunity.
We must find a reputable hospital and a responsible doctor, instead of looking at the size of the hospital and the silence of advertisements.