How tear-ible! Over 20 million Americans have dry eye disease, which means that their eyes don’t produce enough tears or their tears evaporate too quickly. Dry air, wind, certain autoimmune diseases, ...

The mites that live in your eyebrows and can lead to unpleasant infections. Eyelash mites, also known as Demodex mites, are microscopic parasites that live in hair follicles and oil glands.

Although the mites are sometimes naturally found on the human body, they tend to flock to eyelashes and eyebrows, Parbhu said. Infection can set in if they overpopulate, she said.