How does a silicone injection for the scrotum and penis work?

There are several non-invasive and surgical options you can choose from to achieve a better look down under. Fillers, prp, and fat transfers are some options. See a board certified physician in order to determine what is best. Best, Dr. Emer. 

Surgeons have tried numerous things for penile enlargement. They have been disastrous. Don’t even think of having it don’t. It will look terrible and the risk of infection is high.

Raw silicone injections work this way.  You go to a hotel in a shady part of town.  A shady person injects silicone (maybe), and then, you get infected and things fall off.Don't even think about it.