As far as i know, the mineral oil can actually help people with dry eyes to some extents. The dry eye is the common term of conjunctival xerosis. It's the eyes symptom of tear film's pathological change, thus the cornea and conjunctiva without normal moist and feel dry. It could be stemmed from inflammation and immune system abnormal as well as excessive eyes using, etc. Fiftly, mineral oil is hydrocarbons mainly containing carbon atom number. It contains many composited ingredients, which make it workable for the moisture function. Thus, using the mineral oil or some products which are made of mineral oil can keep the eye moist, help to protect the eye from infections, and decrease symptoms of dry eyes effectively.