Demodex Mites

Eyelash mites are parasites that live on the face and in the hair follicles of humans. Studies have shown that roughly a third of children and young adults, half of the adults, and two-thirds of elderly people were proven to be hosts of the Demodex mites. They feed on dead skin cells, but they apparently have also started taking a liking to mascara. Also, they don't have an anus. They still need to poo, so it's been said that they 'explode' with waste at the end of their lives and all the built-up waste degrades on your face.