These bugs mate on your face as you sleep. Are they friends or foes?

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As you fall asleep each night, you can take comfort in knowing you are never truly alone — thanks to the dozens of eight-legged mites crawling out of your pores to party.

You can’t see or feel these nocturnal crawlers, called demodex mites, but like almost every adult, you have them all over your body. Smaller than a pinpoint, the tiny invertebrates, which measure about 0.15 millimeters to 0.4 millimeters in length, live around the outer parts of hair follicles and feed on their oily contents.

“While we are sleeping , they come out and are very happy, mating, visiting relatives, walking on our faces. The moment we wake up, they go back inside the pore