Demodex Mite (Face Mite)

Scientific Name: Demodex folliculorum or Demodex brevis

Order & Family: Trombidiformes: Demodicidae

Size: Microscopic; typically 0.1mm to 0.4mm in length.

Demodex Mite (Face Mite)

Natural Habitat

Human skin, specifically inside hair follicles and sebaceous glands (often on the face including eyelashes, nose, and cheeks).

Diet & Feeding

Sebum (skin oils) and dead skin cells.

Behavior Patterns

They are nocturnal, emerging from hair follicles at night to mate on the skin's surface before returning to the follicle to lay eggs. They move slowly using four pairs of stubby legs.

Risks & Benefits

Generally harmless commensals found on almost all adults. Overpopulation can cause demodicosis, contributing to conditions like rosacea, blepharitis (eyelid inflammation), or skin irritation.

Identified on: 2/26/2026