If you decide not to have your baby circumcised, you should wash his penis with soap and water with each bath. Also, be sure to teach him good hygiene and how to care for his penis as he grows older. Treat the foreskin gently and make sure not to pull it back with great force. Once it starts to be able to pull back (often around age 5), it is important to clean under the foreskin with soap and water often. He should see a doctor if there is any swelling or pain, or if the foreskin is itchy.