Dry, cracked feet are more than just unattractive. The broken skin barrier can become a way for insidious bacteria and fungus to infect the feet. We already talked about how there are over 100 different types of bacteria living on the skin. Could you imagine if these microbes could get into your blood and tissues? Chances are, you’ve come into contact with everything from athlete’s foot to toenail fungus already. If there was no way for these pathogens to creep inside the body, then you probably just washed your feet, washed your socks and called it a day. Yet, if you have any cracking, cuts or blisters, this is all the invitation foot fungus needs.