Demodex Mite (Face Mite)

Scientific Name: Demodex folliculorum or Demodex brevis

Order & Family: Order: Trombidiformes; Family: Demodecidae

Size: Microscopic; typically 0.15 mm to 0.4 mm in length

Demodex Mite (Face Mite)

Natural Habitat

Typically found in or near hair follicles of mammals; in humans, often found on the face, particularly the nose, eyelashes, and forehead.

Diet & Feeding

Sebum (oil produced by skin glands) and dead skin cells

Behavior Patterns

They are largely nocturnal, emerging from hair follicles at night to move across the skin and mate. They lay eggs inside the follicle or sebaceous glands.

Risks & Benefits

Benefits: Generally considered a commensal organism that may help clean pores by eating oil. Risks: Overpopulation can lead to demodicosis, causing skin irritation, redness, and exacerbating conditions like rosacea or blepharitis (eyelid inflammation).

Identified on: 3/3/2026