Your skin may look clean, but tiny organisms called Demodex mites can live in your eyelash follicles and oil glands. Most people have them, and usually they’re harmless. Problems start when too many multiply.
These microscopic mites feed on dead skin and oils around your lashes. Poor eyelid hygiene, aging, oily skin, heavy makeup, rosacea, or weakened immunity can lead to overgrowth and cause inflammation called blepharitis.
Common symptoms include:
- Itchy or burning eyes
- Red, swollen eyelids
- Crusty or flaky lashes
- Dry or gritty feeling in the eyes
- Blurry vision or light sensitivity
- Eyelash loss in severe cases
Many people mistake these signs for allergies or tired eyes. Doctors often spot Demodex overgrowth by seeing “collarettes” — flaky debris around the lash base.
To help control mites:
- Wash your face and eyelids daily
- Remove all eye makeup before bed
- Clean makeup brushes and pillowcases often
- Avoid sharing mascara or cosmetics
- Use gentle eyelid cleansers if recommended
If symptoms persist, an eye doctor may recommend medicated lid wipes, tea tree oil products, or prescription treatments.