Illustration of a face mite.
Scientists still aren't sure why humans play host to these tiny creatures.
  • A scientist scraped a black dot on his forehead and put it under a microscope.
  • He saw dozens of tiny face mites, aka Demodex mites, crawling around on the plate.
  • Demodex are harmless and like to live on human faces as well as on all other mammals.

They come out at night to have sex on your face. They feast on the oil in your pores. They lay eggs in your sebaceous glands. Yikes!

They sound like something from a horror film, but these mysterious, microscopic creatures are very real.