Demodex mites are microscopic mite species that live on human skin, particularly in hair follicles. There are two common species: Demodex folliculorum (found mainly in hair follicles) and Demodex brevis (found mainly in oil glands). When present in low numbers, they normally don't cause any symptoms and are considered part of our skin's natural flora. However, an excessive increase in Demodex numbers can lead to redness, itching, irritation and acne-like lesions on the skin. In humans, Demodex is often found on the facial skin, particularly the forehead, cheeks, sides of the nose, eyelashes and outer ear canal. Its density in the skin is increased in rosacea. When it settles at the base of the eyelashes, it can lead to findings such as eye redness and inflammation (blepharitis) and dry eyes.
Demodex mites are very small parasites.
They generally live at the base of the eyelashes and in facial pores.
They are harmless under normal conditions, but an excessive increase can cause skin problems (rosacea, blepharitis, demodicosis, skin redness and sensitivity, etc.).
Treatment may involve topical medications, skin cleansing (with ingredients such as tea tree oil and sulphur-based products) and/or oral medications. BBL or laser treatments can also help treat both Demodex-related active breakouts and redness.