Erick Kuwahara
Erick Kuwahara voted up HappyTwo BeHereTwo's answer

If there is puss, it's infected.  Wash it thoroughly.  Then apply a topical antibiotic, such as Neosporin, and cover with a bandage.  Follow the package instructions on the ointment you choose, to know how frequently to reapply.

Beware of red streaks emerging on the skin around the cut.  That means the infection is spreading, and you … Read more