Francesca said: "From what I gather it [folliculitis] is caused by bacteria. From what I've read it's not about putting in all the chemicals, it's about cleaning it properly.

Short Impetigo Treatment By Science News Magazine Issue: Vol. 44 No. #13, September 25, 1943 Having trouble viewing this? Open in a new window Questions or comments on this article?

Primrose told The Conversation : "Beards can sometimes spread skin infections, such as impetigo — a contagious rash often caused by S aureus, which is commonly found in facial hair.

Streptococcus bacteria is another common cause of skin infections overall and belly button infections in particular, Dr. Lipoff says. Like Staphylococcus aureus, Streptococcus can cause impetigo.