Hello, This white cheesy stuff is called as smegma. Smegma is caused by shredded skin cells, largely dead epithelial cells, mixing with skin oil secretions, such as sweat and naturally-produced lubricants.  Smegma may build up if it is not washed away. This may cause problems, thus good personal hygiene is necessary to avoid such problems.  If smegma is allowed to build up it may begin to smell. It also may provide a place where bacteria can breed. Smegma can be prevented by washing the genitals with warm water at least once a day.  If you wash it with soaps and gels,then it can rob your penis of natural lubricant and result in local dryness and irritation of glans penis. There is no need of any anti bacterial cream. Thanks