Demodex mites are tiny eight-legged parasites that mostly live in hair follicles and oil glands on your face, neck, or chest. As alarming as this may sound, they’re generally harmless.

If you ever wonder why doctors advise against sharing makeup with others, this optometrist reveals the reason why: Demodex mites. In a clip with over 538,000 views, Brooklyn, New York-based ...