What is that stuff that builds up between your
It is composed of a variety of things: lint
fibers from your socks, dirt that gets into your shoes, and dried
skin cells that have flaked off your foot. Since your toes are close
together and often in shoes, the area makes a perfect catch-all
trap for whatever floats around. Regular bathing, making sure you
clean between your toes, keeps the build-up at bay.