The other is to use a humidifier within the house.
Mineral oil coats the skin and prevents its "breathability". No wonder there are excellent home remedies using fenugreek seeds within the Siddha system of drugs. http://Sirand.biz/__media__/js/netsoltrademark.php?d=www.Opticaljournal.com%2Fdry-eyes-x-ocular-allergy-x-glaucoma%2F