By Gina Echevarria,Shira Polan Business Insider via Yahoo News Headline Image credit: Gross Science YouTube There's a creature scurrying across your face. Right now. Yes, you. And at some point, maybe now, maybe in a few days, it's going to find a nice cozy pore in your skin, and lay a single, enormous egg. Meet the face mites. They're smaller than a grain of sand, are a kind of arachnid, like spiders, and they feast on the oil and cells in your skin. Particularly on your oily nose, cheeks, and forehead. Scientists suspect they've been living on us since the dawn of humanity over 200,000 years ago. And today, studies suggest practically every adult on the planet has thousands of them. Odds are you've been living with them your whole life. Babies quickly get them from their parents a few days after birth. And once those face mites are on you, the only thing they enjoy as much as slurping oil and nutrients from your pores is having sex. All over your face. Afterwards, females burrow deep