I regularly use these over-the-counter sprays to keep my nose moisturized. Helps a great deal! You can make 'em yourself as well:
Over-the-counter (OTC) nose sprays can become addictive or cause "rebound" nasal congestion. To eliminate these problems, make your own saline nasal spray by mixing eight ounces of warm (boiled first) water with one-half teaspoon of salt. Pour into an empty OTC nasal spray bottle (you may have to remove the nozzle with pliers) and shake. This spray is good for relieving a stuffy nose caused by colds or allergies and for moistening dry nasal passages. It is also much cheaper than medicated OTC sprays.
Problem solved.