Everything That You Never Wanted To Know About Hair, Face & Skin Demodex Mites! Demodex Mites' Symptoms: Demodex mites are parasites that live in hair follicles. Studies show the Demodex hair mites to be associated with numerous types of skin complications, for example the mites have been identified as a leading contributor to hair loss, aging skin, rough skin, wide pores, red nose, pimples, acne, rosacea, freckles, spots, fine wrinkles, atopic dermatitis, itching, dermatosis, rash, discoloratio